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Commercial Roofers In Boston, MA

Built To 40 PSF And 120 MPH. Permitted To Boston’s Actual Rules.

EPDM and TPO systems, sectional repair, and scheduled maintenance for the buildings Boston works out of: Downtown and Seaport office, Back Bay and South End mixed-use, light industrial along the Southeast Expressway, and multifamily across every neighborhood. Quoted against the code row for your address, the permit track your scope actually lands in, and what the street costs per day.

A commercial roof in Boston is a permitting problem wearing a waterproofing costume. The membrane is the easy part. What decides the schedule and the number is which code row applies to the address, which licence class can sign the permit, whether the scope lands in Short Form or Long Form, what the city charges to park a dumpster in the lane, and whether the building is inside BERDO. 4 of those 5 never appear on a roofing bid. We put them on ours, each on its own line, because every one of them can move a date or a price after a contract is signed. Powersol Roofing runs commercial work in Boston and across the South Shore from 100 Hancock St in Quincy. Call (617) 631-5435 or request an assessment.

Same crewAssessment to final walkthrough, one point of contact
Your hoursStaging, crane and noise scheduled around operations
In writingPhoto-documented condition report after every visit

Boston is a row, not a mood

What Snow And Wind Loads Does The Code Assign Your Building?

Contractor copy says coastal wind and New England snow. The state says something narrower. Table 1604.11 of 780 CMR Chapter 16 publishes a ground snow load, a minimum flat-roof snow load and 4 wind speeds for every city and town in the Commonwealth. Boston is 40 psf, 30 psf, and 110, 120, 128 and 133 mph across Risk Categories I to IV. Those are the numbers a structural letter is written from. A neighboring town is not automatically the same row.

City or town Ground snow Pg Min flat-roof Pf Wind, Risk Cat II Wind, Risk Cat III
Boston40 psf30 psf120 mph128 mph
Brookline40 psf30 psf120 mph128 mph
Chelsea40 psf30 psf120 mph128 mph
Revere40 psf30 psf119 mph128 mph
Somerville40 psf30 psf119 mph128 mph
Newton40 psf30 psf119 mph128 mph
Quincy40 psf30 psf121 mph130 mph
Worcester50 psf35 psf117 mph127 mph
01
30 psf is a floor, not a ceilingThe table’s own footnote says the design flat roof snow load shall be the larger of the calculated flat roof snow load using Pg or the value of Pf listed in the table. On a plain roof both land at 30 psf. Add a parapet, a roof step or a bank of rooftop units and drift and sliding surcharge push the design load above it. A second footnote adds an elevation adjustment where a site sits above the town’s mean elevation, which matters on the Boston hills.
02
120 mph is Risk Category IIThat covers most commercial buildings. A school, a church hall or anything holding more than 300 people is Risk Category III, and Boston’s design wind speed rises to 128 mph. Field, perimeter and corner fastening zones each carry a different density, and corners are where uplift failures start. The occupancy decides the number before anyone picks a membrane.
03
Code is a design minimum, not an operations rule30 psf describes a finished, drained assembly. It is not permission to let 3 feet of wet snow sit on a 1970s deck while somebody waits for a threshold. Pre-1975 decks were sized under older tables and older assumptions, and nothing in the current code retroactively makes them compliant. Last winter settled that argument for a lot of owners.

The 5-minute filter

Which Licence Class Can Legally Sign Your Boston Roofing Permit?

A Construction Supervisor Licence, and the class written on it decides whether your contractor can legally do your scope. Massachusetts does not issue a thing called a Boston commercial roofing licence, which is why every competing page can say licensed and insured and mean nothing by it. This is the question that separates a commercial outfit from a residential shop wearing a commercial headline, and it takes 5 minutes to ask.

01
The Roof Covering specialty stops at 35,000 cubic feetThe state describes the Roof Covering specialty CSL as covering construction, reconstruction, alteration, repair, or removal of roof covering, including repair and replacement of 25% of sheathing and 25% of sistering roof rafters. It carries the same size ceiling as an Unrestricted licence: buildings under 35,000 cubic feet of enclosed space. Most Boston commercial buildings are larger than that.
02
The 25 percent limits are real limitsExceed 25 percent sheathing replacement or 25 percent sistered rafters and the specialty licence no longer covers the work. On a roof that has been leaking for 3 winters, that is not a hypothetical. It is a decision made on the deck, in week 1, and the answer decides who is legally allowed to keep working.
03
Above 35,000 cubic feet, control passes to a design professional780 CMR 107.6 requires plans, computations and specifications to be prepared by or under the direct supervision of a registered design professional, and 107.6.1 exempts any building containing less than 35,000 cubic feet of enclosed space. Whether a given reroof triggers it is the building official’s call, which is exactly why it gets asked before filing rather than at the counter.
04
HIC registration is the wrong test entirelyHome Improvement Contractor registration reaches pre-existing owner-occupied buildings of at least 1 and not more than 4 dwelling units. 201 CMR 18.01 also states that a corporation, partnership, business trust, charitable organization, or any other business entity does not qualify as an owner. If your building is a warehouse, a lab or a 40,000 square foot office, HIC tells you nothing. Ask for the CSL class and the supervisor of record instead.

What the city publishes, and what it does not

Short Form Or Long Form: Which Permit Does A Boston Reroof Need?

Boston runs 2 building permit tracks and publishes a plain definition of each. It does not name roofing in either one. We checked the Short-Form page, the Long-Form page, the Inspectional Services permit guide and the building forms index, and roofing appears in none of their examples. Any contractor who tells you Boston classifies a reroof as short form is telling you an inference, not a rule.

The definitions still do the work. Apply them to your actual scope and the track is usually obvious. What is not obvious is the calendar, which is why the track matters more than the fee.

Short FormThe city’s definition: a permit that covers minor alterations that don’t change a building’s structure or use. A like-for-like membrane replacement with no framing work and no occupancy change meets it. The ISD guide says it may take 1 week with all the correct documents.
Long FormMajor alterations or renovations that change a building’s structure or use. Deck replacement, a new opening, added rooftop equipment loads, a change of occupancy. The guide gives between 4 to 5 weeks with all the required documents submitted and where no building or zoning relief is needed. Stamped plans by a Massachusetts registered engineer or architect come with this track.
The fee is published arithmeticShort Form Building: a $20.00 primary fee plus $10.00 per $1,000 of the estimated cost of work. Long Form Building: a $50.00 primary fee plus $10.00 per $1,000.00. That is 1 percent of job value plus the primary fee. A $180,000 reroof filed short form calculates to $1,820. No roofing-specific rate exists.
Carry the hedgesBoth figures come from a plain-language city guide, and the guide hedges them: may take, can depend on the size of the project, if the application does not need relief. They are not a service-level commitment. A contractor who turns them into a promised date has invented the promise.

The line nobody quotes

What Does It Cost To Put Your Dumpster In A Boston Street?

$50 to open the permit, then 10 cents per square foot per day for the first 500 square feet and $20 per metered space per day, with a $5,000 bond and a 7 business day lead time. A tear-off needs somewhere to put the old roof, and in Downtown, the North End, Back Bay or anywhere with no yard, that somewhere is a public lane. The Public Works fee schedule is published. What it is not is optional, fast, or something to discover in week 1.

You must apply for the permit at least 7 business days before you need the public space, and you need proof that you are bonded, at a surety bond amount of $5,000 for occupancy permits. The base fee is $50. Occupancy is charged at 10 cents per square foot each day for the first 500 square feet occupied, then 5 cents per square foot each day for any additional square feet. A metered space is $20 per meter per day. Signage is $4 each. The application also asks what your plan is for hiring a Boston police detail, so a detail is a live possibility on a tight street rather than a certainty on every job.

Work the arithmetic on a real job and the number stops being trivial. A 600 square foot staging footprint eating 2 metered spaces for 18 working days is $50 base, plus $90 for the first 500 square feet, plus $9 for the extra 100, plus $720 in meters. That is $869 before a single square of membrane is ordered, and it is the line that turns a 3-week schedule into a 5-week one when the application goes in late. For an occupancy running longer than 30 days, Public Works asks you to inquire with its permitting division rather than publishing the rate.

7 business daysMinimum lead time on the street occupancy application, before you need the space
$5,000 bondSurety bond amount the city requires for an occupancy permit
$20 per meter, per dayWhat a metered parking space costs while your dumpster is in it

What the building code says

Can Your Roof Legally Take A Recover, Or Does It All Come Off?

Massachusetts runs on the 2021 International Building Code through 780 CMR Chapter 15, and reroofing lives in Section 1512. Massachusetts left that section unamended, so the model text governs word for word. A recover is not permitted where the existing roof or roof covering is water soaked or has deteriorated to the point that it is not adequate as a base for additional roofing, where the existing roof covering is slate, clay, cement or asbestos-cement tile, or where the existing roof has 2 or more applications of any type of roof covering.

01
The layer countYou get 1 recover. A roof already carrying 2 applications cannot take a third. Nobody knows the count from the ground, which is why the assembly gets opened before the quote instead of turning up as a change order in week 2. That opening is the first step of a documented roof inspection. On a Boston building that has been reroofed twice since 1980, the verdict is usually already decided and the owner is the last to know.
02
The dead load nobody pricedA recover adds a second membrane and often more insulation to a structure sized decades ago. That added dead load is part of the recover decision on a 40 psf design, and it rarely appears on a competing bid. Ponded water is worse: standing water is dead load nobody designed for, and it arrives the first time a drain blocks.
03
Drainage sizing is a Massachusetts-only detail780 CMR Chapter 15 carries exactly 2 amendments, at 1502.1 and 1502.2, and both say the same thing: delete the words Chapter 11 of the International Plumbing Code, replace with 248 CMR. Section 1502.2 is the secondary and emergency overflow drains or scuppers section. So overflow drainage on a Boston roof is sized to the state plumbing code, not the international one, and that changes whose calculation the building department wants to see.
04
Slate is a hard stop, and Boston has a lot of itWhere the existing covering is slate, clay, cement or asbestos-cement tile, the code does not permit a recover at all. On a Back Bay or South End building with a visible slate slope, that intersects with historic district review further down this page, and the 2 constraints have to be solved together rather than in sequence.

The number that is not in the code

Why Is The R-Value Everyone Quotes You Not In The Boston Code?

Because the table it comes from was struck out. Ask 5 roofers what insulation a Boston commercial replacement needs and several will say R-30 continuous above the deck, which is Table C402.1.3 of the model energy code. In Boston that table is not in force. Boston has been a Stretch Code municipality since 1 July 2011 and adopted the Specialized Stretch Code effective 1 January 2024, and the commercial version of both, 225 CMR 23.00, amends the 2021 IECC with one instruction: delete Section C402.1.3 and Table C402.1.3 and mark as Reserved.

01
What is left is a U-factor, not an R-valueWith the R-value table struck, the assembly U-factor method in Table C402.1.4 is the remaining prescriptive route for a roof. The code also closes the side door: the Component Performance Alternative states that roofs, below grade walls, floors, slab-on-grade floors and opaque doors shall comply with the values in Table C402.1.4. Roofs are specifically carved out of the trade-off path. Beyond that the routes are performance-based, including targeted performance, relative performance against ASHRAE 90.1-2019 Appendix G, and Passive House.
02
Why this moves moneyA U-factor is an assembly figure. It counts the whole build-up rather than one layer, so cover board, tapered fill, fastener thermal bridging and deck type all land inside the same target. That is a different conversation from adding 2 inches of polyiso and calling it compliant, and it is the conversation a bid should be able to have. 225 CMR 23.00 also amends the U-factor path to allow tapered above-deck insulation based on thickness, which matters on every roof being tapered to kill ponding.
03
There is no cool roof mandate here eitherMassachusetts does not require a reflective roof or an SRI rating. Two independent reasons. The model energy code’s roof solar reflectance section reaches climate zones 0 through 3, and 780 CMR Chapter 13 states plainly that Massachusetts is in climate zone 5A. A white membrane on a Boston building is a design choice with real merits and no code behind it.
04
What replaced it is not optional225 CMR 23.00 replaces that same section outright: C402.3 becomes Rooftop solar readiness, mandatory, following Appendix CB for a commercial solar-ready zone. A reroof is the cheapest moment in 30 years to provision one. The deck is exposed, the attachment is being specified anyway, and penetration detailing is cheaper to get right now than to retrofit through a 5-year-old membrane and argue about the warranty afterwards.
05
The limit of what this page will claimWe are not printing the numeric U-factor here. The state regulation points at the model code’s table rather than reprinting it, and we will not publish a figure we have not read in the printed table. What we will do is name the path, tell you which document the building department is working from, and put the actual figure in your quote against the assembly we are proposing.

Those 2 amendments point at the same roof. The stretch code makes a solar-ready zone mandatory. BERDO, below, makes on-site solar one of the cleanest ways to hit an emissions limit. Both conversations land on the same deck in the same week, and only 1 contractor on the job is in a position to open it. Doing it twice costs more than doing it once, and the second time you are cutting through a membrane that is already under warranty.

The version of 225 CMR 23.00 carrying these amendments took effect on 14 February 2025. That is recent enough that a bidder working from an older spec sheet will quote you the struck table without knowing it moved. It also does not apply everywhere in Greater Boston. Boston, Cambridge, Brookline, Somerville and Newton have adopted the Specialized Code. Quincy, Chelsea and Revere carry the Stretch Code only. A roofer covering 4 of those municipalities in a week is working under 2 different envelope rules, and the address decides which one applies. So ask any bidder which municipality’s adoption they are pricing against, and what the number does if the answer is Boston.

14 February 2025Effective date of the 225 CMR 23.00 amendments that struck the prescriptive R-value table
Table C402.1.4The assembly U-factor path that remains, with roofs carved out of the component trade-off route
Appendix CBThe commercial solar-ready zone the code substitutes for the reflectance requirement

On zero competing roofer homepages

Does BERDO Make This The Year To Replace Your Roof?

If the building is covered and the emissions deadline is close, yes, because the roof is where several of the answers live. Boston’s Building Emissions Reduction and Disclosure Ordinance covers non-residential buildings that are 20,000 square feet or larger, excluding parking, and residential buildings that have 15 or more units. A tax parcel with multiple buildings that sum to at least 20,000 square feet or 15 units counts as well, and a mixed-use building is treated as residential where 50 percent or more of its gross floor area excluding parking is residential.

The city says roughly 4 percent of buildings in Boston are covered by the ordinance and that they account for approximately 60 percent of Boston’s building emissions. We are not BERDO consultants. We are saying that in 2026 a roofer who has never heard the acronym is the wrong roofer for a covered building, because the roof is where several of the available answers live.

Your year depends on your sizeEmissions standards began in 2025 for non-residential buildings of 35,000 square feet or larger and residential of 35 or more units. The 20,000 to 34,999 square foot cohort, and residential of 15 to 34 units, starts in 2030. All covered buildings are expected to reach net-zero emissions by 2050.
The penalties are dailyThe ordinance sets $1,000 a day for failing to meet the emissions standard in the larger cohort and $300 a day in the smaller one. Failure to report runs $300 and $150 a day. Inaccurate reporting is between one thousand dollars and five thousand dollars. No penalty applies within 30 days of a violation notice, or where it is corrected in that period.
On-site solar is the clean answerThe city states that solar generated on-site or on another building in Boston, as well as community solar, can be used for compliance. Outside the city it gets complicated: for a project outside of Boston, the city asks you to contact the BERDO team to confirm eligibility. On-site behind the meter avoids that conversation, and a reroof is when the deck capacity and the attachment get decided.
Or you pay the differenceAn Alternative Compliance Payment exists, and the ordinance puts the initial cost at $234 per metric ton of CO2e above a building’s limit, paid into the Equitable Emissions Investment Fund. The word initial is doing work: the ordinance says the rate is subject to review. Treat $234 as the current figure and check it before it goes in a capital plan.

Back Bay, South End, Bay Village

Does Your Historic District Have To Approve The Roof First?

Boston does not run one historic rulebook. The South End is a Landmark District. Bay Village is a Historic District. Aberdeen, Bay State Road and Back Bay West, Highland Park, Mission Hill Triangle and St. Botolph are architectural conservation districts. Each carries its own standards, and a contractor who says we do historic without naming your district has not read them. Below is what 2 of those documents actually say about roofs.

Question South End Landmark District Bay Village Historic District
Visible slope materialOriginal slate should be retained or repaired. On replacement, slate or a non-reflective material similar in color and texture to slate may be allowedSlopes historically covered in slate shall be replaced with slate, a simulated slate material, or other material approved by the Commission case by case
Visible metal and flashingMust be dark, non-reflective and non-obtrusive. Unfinished metal other than copper will not be approvedVisible metalwork on the primary elevation should be copper. Unpainted mill finish aluminum is inappropriate. Painted aluminum is case by case
Cool roofNo cool roof provision. The constraint is the non-reflective requirement on visible slopesMay be allowed where the roof was not historically slate, where the roof is flat, or where a parapet renders it invisible from the public way. All installations reviewed
Skylights on a mansardNot allowedNever allowed
Roof decks, headhouses, mechanical unitsCitywide design review guide: a mock-up of the proposed height and volume is required to determine visibility before approval, plus full sightline section drawings. Staff need 15 business days before a hearing to deem an application complete

One line in the Bay Village standards is worth more to a building owner than most roofing copy: historic gutters and downspouts were not designed with precipitation load standards, therefore they may not be suitable for increased precipitation loads. That is the commission saying, in its own document, that the original drainage may not carry what the sky is now delivering. Plan the interior work around that rather than around the membrane warranty. It is also the reason a historic reroof scope should carry gutter and downspout capacity as its own priced line instead of folding it into flashing and hoping.

There is a live conflict between 2 of the rules on this page, and historic buildings meet it first. The commercial stretch code makes a rooftop solar-ready zone mandatory. The South End standards say rooftop solar panels visible from a public street may be approved only on a case-by-case basis but in general are discouraged. Bay Village will consider them where the placement is minimally visible, the visible mass is minimized, and the appearance is dark and non-reflective. Neither standard bends because the energy code asks. On a parapet building the answer is usually the parapet itself, which Bay Village names as a visual barrier for exactly this. Draw the sightlines at design rather than discovering the conflict at a hearing.

27 April 1999Revision date of the South End Landmark District standards still in force today
12 November 2024When the Bay Village Historic District Commission adopted its current regulatory standards
15 business daysWhat staff need before a public hearing to deem an application complete

Winter 2025 to 2026, named and dated

What Did Last Winter Actually Do To Massachusetts Roofs?

It closed a national chain store, dropped a gymnasium, put 17.1 inches on Logan and produced one collapse that never happened. Most Boston roofing pages still reach for 2015 when they want a snow story. Here is the winter we actually just had, with dates and sources, including the bit that turned out to be fake.

01
28 January 2026: a national chain closed a store over snow on the roofThe Home Depot in Watertown shut for the day after the storm of Sunday 25 January. The company’s own statement, reported by CBS Boston: we saw significant snow accumulation on the roof and temporarily closed the store out of an abundance of caution. Nothing failed. A retailer looked at its roof and decided not to find out. That is a commercial judgment call, and it is the one owners ask us about most.
02
24 February 2026: a gymnasium came down in KingstonThe gym at the former Sacred Heart High School collapsed. WHDH reported that fire officials said the weight of the snow likely caused the cave in, and quoted the Kingston Fire Department describing half the building collapsed in on itself. The building had been out of service for a few years and nobody was hurt. Note the word likely, and note that this is single-source reporting. We are not going to overstate it.
03
22 to 24 February 2026: 17.1 inches at LoganThe February blizzard put a National Weather Service total of 17.1 inches on Boston, a daily record for 23 February. Southeastern Massachusetts took far more: the hardest-hit communities recorded 30 to 37 inches, with Fall River officials reporting 41. A roof built to a 30 psf minimum flat-roof load does not care about inches. It cares about water content, drift and whether the drains are clear.
04
The ice dam surge came first, not afterThe Boston Globe reported in February 2026 that Massachusetts contractors could not keep up with ice dam requests, and that Minnesota ice dam firms had sent crews into the state, with one saying it had not seen volume like this since the historic winter of 2015. That reporting ran roughly 2 weeks before the blizzard. If a page tells you the February storm caused the ice dam crisis, the timeline is backwards. There is also no statewide count of ice dam jobs. Every volume figure in circulation is a vendor’s own.

One more thing that winter taught, and it belongs on a roofing page. During the February blizzard a photograph of a caved-in roof on a well-known Boston waterfront restaurant spread across social media in a few hours. The building was fine. The operator said the image was AI-generated, and MassLive reported that Boston police had no record of any incident. Pictures move faster than facts in a storm. So if a photograph of your own building arrives from a stranger, or a cold call describes damage nobody has shown you, the answer is a dated inspection with a name on the report rather than a signature. That is why every condition report we write carries a date, a photo set and a person who stands behind it, and why storm damage repair starts with evidence.

The timing is the part worth acting on. Massachusetts contractors were already buried in ice dam calls in the first half of February, before the blizzard of 22 to 24 February arrived. The queue was full before the snow anybody remembers. By the time water is coming through a ceiling in a storm week, the crew that would have cleared your drains in November is working somebody else’s building, and the price of an emergency visit is set by that fact rather than by the difficulty of the repair. This is the argument for the maintenance program above, and it is a scheduling argument rather than a quality one.

17.1 inchesNational Weather Service total for Boston on 23 February 2026, a daily record for the date
30 to 37 inchesWhat the hardest-hit southeastern Massachusetts communities recorded in the same storm
Before the blizzardWhen the ice dam queue was already full, per Boston Globe reporting in early February

Check your own building

What Do The Rules Say About Your Specific Building?

7 questions. It returns the design snow and wind row the code assigns your address, whether a recover is legal, which insulation compliance path applies, which permit track your scope lands in and what the fee calculates to, whether a Roof Covering CSL covers the building, what the street costs per day, whether BERDO applies and in which year, and whether a historic hearing comes first. Every output is built from published Massachusetts regulation and City of Boston fee schedules. No email, nothing stored, nothing sent anywhere.

    Planning guidance built from 780 CMR 10th edition, the 2021 International Building Code as adopted in Massachusetts, 225 CMR 23.00, the Boston Inspectional Services building fee schedule, the Boston Public Works street occupancy fee schedule, and the BERDO ordinance. It is not a structural calculation, an energy compliance report or a code ruling. Your building’s actual design load, U-factor path, permit track and drainage sizing get confirmed against the stamped drawings and with Boston Inspectional Services.

    Who this is for

    How Does Your Building Type Change The Way The Roof Fails?

    A restaurant roof dies at the grease exhaust. A garage roof dies at the drains. Knowing the pattern is half the inspection, and it is why the first visit to any building starts with questions about how the building gets used, before anyone looks at the membrane. The same 6 patterns drive our commercial roofing in Quincy.

    01
    Downtown and Seaport officeRoof traffic wear, HVAC curbs, and no yard to stage from. The street occupancy permit is usually the critical path, not the membrane, and the application goes in before the crew is booked.
    02
    Retail and storefrontsSignage penetrations, party walls, and customers underneath. Repairs staged before opening hours. On a party wall the flashing detail belongs to 2 owners, which is a conversation better had before the tear-off than during it.
    03
    Back Bay and South End mixed-useVisible slopes, historic district standards, and a hearing calendar. Slate is also a hard stop on a recover under Section 1512, so the code constraint and the commission constraint have to be solved together.
    04
    Multifamily and condo boardsDocumentation and reserve planning matter as much as the repair. Massachusetts requires every condominium to maintain an adequate replacement reserve fund and never defines adequate. At 15 units the building is also inside BERDO. Reports written to drop into the board packet without editing.
    05
    Light industrial and warehouseBig open spans where one blocked drain ponds a lot of water fast. Standing water is dead load nobody designed for. Drainage gets checked first, always, and overflow sizing points at 248 CMR rather than the international plumbing code.
    06
    Institutions and nonprofitsChurches, clubs and schools on fixed budgets. Repair-versus-replace verdicts in writing, and the Risk Category III wind number applied where the occupancy calls for it. On a city or state building, the prevailing wage schedule applies and certified payroll is part of the job.

    What the money buys

    Which Of The 5 Layers Is Thinner In The Cheaper Quote?

    Usually the insulation, and you will not find out from the surface. The membrane everyone sees is the last of 5 layers. Each does a different job, each fails differently, and each gets its own line on our quote with the manufacturer, the thickness and the attachment method named.

    That is why 2 quotes for the same roof come back far apart. Compare them layer by layer. If a number is lower, something specific is thinner, missing or being reused, and you are entitled to know which before you sign. On a Boston replacement the insulation line is where the gap usually hides, and the right question is which compliance path rather than which R-value, because the R-value table is not the one in force here. There is more on membranes and low-slope build-ups on our flat roofing page.

    MembraneEPDM or TPO, the waterproof skin and the only layer weather touches
    Cover boardHardens the system against hail, foot traffic and dropped tools, and it counts in the assembly U-factor
    InsulationPolyiso, specified to the assembly U-factor path rather than a deleted R-value table, tapered to kill ponding
    Vapor retarderWhere the building’s use calls for it, keeps interior moisture out of the assembly
    Structural deckSteel, wood or concrete, inspected and repaired while the roof is open

    3 ways to engage us

    Do You Need A Repair, A Maintenance Program Or A Replacement?

    Most owners meet us at the leak. The ones who spend the least over a decade are the ones on the program, and it has nothing to do with any single repair being better. On a maintained roof, problems get found while they are still 20-minute fixes on a scheduled visit, instead of arriving as a phone call from the tenant on the top floor. Same crew, same standards, 3 ways in.

    When something is wrong

    Repair

    Leak tracing, seam and flashing repair, drain and scupper work, puncture patches and storm response, with the source photographed before and after.

    Repairs quoted line by lineNo interior access for most membrane workSource photographed before and after
    The one that pays

    Maintenance program

    Semiannual inspections timed to your manufacturer’s guarantee obligation, drains cleared, seams and flashings checked, minor repairs done on the spot, and a photo-documented condition report after every visit.

    Spring and fall visits, plus a post-storm checkInspection log kept in the format your guarantee asks forCondition reports written for budgets and boards
    When it is time

    Replacement

    Full system replacement, EPDM or TPO, staged in sections so the building keeps operating, with the permit track, the street occupancy permit and the energy compliance path settled before the crew is booked.

    Assembly opened and layer count confirmed before the quoteEvery layer specified and priced separatelyCrane, delivery and street permit around your hours

    For owners, managers and boards

    What Paperwork Do Your Board, Your Insurer And BERDO Need?

    A commercial roof decision rarely belongs to 1 person. Whoever you answer to, the file we leave behind is dated, photographed and written in plain English rather than roofing shorthand.

    Managers tell us this is the part that saves them time. The roof gets fixed either way. What stops is chasing a contractor for paperwork, re-explaining the building’s history to whoever shows up, and defending a budget line with nothing behind it.

    Condition reportDated photos, what was found, what was done and what to watch. Formatted to drop into a board packet without editing.
    Replacement horizonA realistic year, not a sales date. Massachusetts requires every condominium to maintain an adequate replacement reserve fund and never defines adequate. A dated condition report with a remaining-service-life estimate is what makes the number defensible to unit owners.
    Claim-ready evidenceDated pre-storm condition photos are the difference between a paid claim and an argument with an adjuster over pre-existing wear. Last February proved how fast an undated photo from a stranger can travel.
    The permit and compliance filePermit number and track, the CSL class and supervisor of record, the street occupancy permit, the energy compliance path used, and the guarantee document with its serial number. This is the file that answers a question in year 14, and the file a BERDO reviewer or an insurer asks for.

    Where we work

    Where Across Boston And The South Shore Do We Work?

    We work Boston out of 100 Hancock St in Quincy, which is closer to most of the city than a regional office 2 states away. When a roof opens up in a February storm, the crew that knows your building is across the bridge rather than dispatched from a regional office. The full range is on our roofing services page.

    DowntownSeaportBack BaySouth EndBay VillageBeacon HillNorth EndCharlestownEast BostonSouth BostonDorchesterRoxburyJamaica PlainMission HillFenwayAllstonBrightonWest RoxburyRoslindaleHyde ParkMattapanBrooklineSomervilleChelsea

    Straight answers

    What Else Do Boston Building Owners Ask?

    What design snow and wind loads apply to a Boston commercial roof?

    Table 1604.11 of 780 CMR Chapter 16 assigns Boston a 40 psf ground snow load, a 30 psf minimum flat-roof snow load, and basic wind speeds of 110, 120, 128 and 133 mph across Risk Categories I to IV. An ordinary commercial building is Risk Category II, so 120 mph. The 30 psf figure is a floor rather than a ceiling. The table’s own footnote directs the designer to use the larger of the listed value or the flat-roof load calculated for the building, so parapets, roof steps and rooftop equipment push the design load above it through drift and sliding surcharge. A second footnote adds an elevation adjustment where a site sits above the town’s mean elevation. If a bid talks about New England snow and never states the row for the address, it is selling climate rather than design.

    Which licence lets a contractor pull a Boston commercial roofing permit?

    There is no Boston commercial roofing licence. A Construction Supervisor License issued by the state is what sits on the building permit, and the class matters. The Roof Covering specialty CSL covers construction, reconstruction, alteration, repair or removal of roof covering, including repair and replacement of 25% of sheathing and 25% of sistering roof rafters. It stops at buildings under 35,000 cubic feet of enclosed space, the same ceiling as an Unrestricted CSL. Above 35,000 cubic feet, 780 CMR 107.6 puts the work under a registered design professional. Home Improvement Contractor registration does not apply here at all: 201 CMR 18.01 limits it to pre-existing owner-occupied buildings of 1 to 4 dwelling units, and excludes corporations and other business entities from the definition of owner. Ask which CSL class is on the permit and whose name is the supervisor of record.

    Do we need a Short Form or a Long Form permit for a commercial reroof in Boston?

    Boston does not classify roofing by name in either track, which is worth knowing before a contractor tells you it does. The city defines a Short-Form Permit as one that covers minor alterations that do not change a building’s structure or use, and a Long-Form Permit as one that covers major alterations or renovations that change a building’s structure or use. A like-for-like membrane replacement with no deck framing work and no occupancy change meets the Short Form definition. Deck or rafter replacement, a new opening, added rooftop equipment loads or a change of use meets the Long Form definition. The Inspectional Services permit guide says a Short Form may take 1 week with the correct documents, and a Long Form between 4 and 5 weeks where the file is complete and no zoning relief is needed. We confirm the track with ISD for the specific scope rather than assuming it.

    What does a Boston commercial roofing permit cost?

    Boston publishes the formula rather than negotiating it. The Inspectional Services building fee schedule sets a Short Form Building permit at a $20.00 primary fee plus $10.00 per $1,000 of the estimated cost of work, and a Long Form Building permit at a $50.00 primary fee plus $10.00 per $1,000.00 of the estimated cost of work. That works out to 1 percent of job value plus the primary fee. On a $180,000 reroof filed short form the arithmetic gives $1,820. No separate roofing rate exists and no minimum beyond the primary fee is published.

    What does it cost to put a dumpster or crane in a Boston street?

    This is the line most owners never see quoted. A dumpster, container, staging area or crane in a public way needs a Public Works street occupancy permit. You must apply at least 7 business days before you need the space, and you need proof that you are bonded, with a surety bond amount of $5,000 for occupancy permits. The base fee is $50. Occupancy runs at 10 cents per square foot each day for the first 500 square feet occupied, then 5 cents per square foot each day for any additional square feet. A metered space costs $20 per meter per day and signage is $4 each. The application also asks for your plan for hiring a Boston police detail. For permits longer than 30 days, Public Works asks you to inquire with its permitting division.

    Can we put a new membrane over the roof we already have?

    Sometimes, and it is a code question rather than an opinion. Section 1512 of the 2021 International Building Code, adopted in Massachusetts through 780 CMR Chapter 15, does not permit a recover where the existing roof or roof covering is water soaked or has deteriorated to the point that it is not adequate as a base for additional roofing, where the existing roof covering is slate, clay, cement or asbestos-cement tile, or where the existing roof has 2 or more applications of any type of roof covering. You get 1 recover in the life of a roof. Massachusetts left Section 1512 unamended, so the model text governs. Nobody knows the layer count from the ground, which is why the assembly gets opened before the number.

    Does a Boston reroof have to hit R-30 continuous insulation?

    No, and the R-value table that number comes from is not in force in Boston. Boston has been a Stretch Code municipality since 1 July 2011 and adopted the Specialized Stretch Code effective 1 January 2024. The commercial stretch and specialized code, 225 CMR 23.00, amends the 2021 IECC with a single instruction: delete Section C402.1.3 and Table C402.1.3 and mark as Reserved. That is the prescriptive R-value table. With it gone, the assembly U-factor method in Table C402.1.4 is the remaining prescriptive route for a roof, and the code closes the side door as well: the Component Performance Alternative states that roofs, below grade walls, floors, slab-on-grade floors and opaque doors shall comply with the values in Table C402.1.4. Beyond that the paths are performance-based. Any bid quoting you an R-value as the Boston code requirement is quoting a table that was struck out.

    Does Massachusetts require a cool roof or a reflective membrane?

    No. The model energy code’s roof solar reflectance section reaches climate zones 0 through 3, and 780 CMR Chapter 13 states that Massachusetts is in climate zone 5A. The commercial stretch and specialized code goes further and replaces that section outright: C402.3 becomes Rooftop solar readiness, mandatory, following Appendix CB for a commercial solar-ready zone. So a reflective membrane on a Boston building is a design choice. A solar-ready zone is the part that is mandatory, and a reroof is the cheapest moment in 30 years to provision one.

    Does BERDO affect a roof replacement?

    It affects the timing. BERDO covers non-residential buildings that are 20,000 square feet or larger excluding parking, and residential buildings with 15 or more units, and a tax parcel with multiple buildings summing to those figures counts as well. Emissions standards began in 2025 for non-residential buildings of 35,000 square feet or larger, and begin in 2030 for the 20,000 to 34,999 square foot cohort, with all covered buildings expected to reach net-zero emissions by 2050. The ordinance sets penalties of $1,000 a day for failing to meet the emissions standard in the larger cohort and $300 a day in the smaller one, and an Alternative Compliance Payment the city puts at $234 for every metric ton of CO2e above the limit. The city says solar generated on-site or on another building in Boston, as well as community solar, can be used for compliance. A reroof is when insulation, membrane reflectance and structural capacity for rooftop solar are all open at once, and it is the only time they are.

    Is roofing on a City of Boston building priced differently?

    Yes, and the reason is the wage schedule rather than the contractor. Public work in Massachusetts runs on prevailing wage rates set per project by the Department of Labor Standards, and the rate comes from the schedule the awarding authority requests rather than from any published list a bidder picks. There is no small-job escape: the state’s guidance for awarding authorities says you must get prevailing wage rates for every public construction project regardless of the dollar amount of the contract, and answers the threshold question with a flat no. Certified weekly payroll records go to the awarding authority through the job, and failure to submit them can draw fines of up to $10,000 per occurrence. Schedules are valid 90 days for bidding and multi-year contracts need annual updates. If a municipal bid lands well above a private quote, the schedule is usually the reason.

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