Repair of a low-slope roof
Patching seams, drains and flashing. See flat roof repair for how failures arise.
How commercial roof work differs from a house roof: scope, tenants, drainage and who signs the contract.
Fastest: call (833) 751-2102. Or send this and we call you back.
Commercial roofing covers shops, offices, mixed-use blocks and multi-tenant buildings, often with low-slope roofs and different scopes from a house. Washington Roofing connects owners and managers with an independent local roofer who inspects, writes a scope and repairs or replaces the roof, subject to the roofer's own capability.
A commercial roof is usually a bigger and flatter version of the problems on a house, with more at stake when it fails. Water that reaches a shop floor, a stock room or a tenant's ceiling costs money in the building and in the business using it. A scope has to account for access, safety, working hours and the people underneath as well as the roof itself.
Washington Borough, Hackettstown and Phillipsburg all have commercial and mixed-use buildings, and many are older. Washington Borough lost part of its downtown in a large fire in 1962. How many of the roofs are low-slope, and what they are made of, has not been sourced, so this page makes no claim about it. What it can say is that building age, roof type and the number of tenants all change the job.
Washington Roofing is a call line that connects you with an independent local roofer, who does the work. Not every roofer takes commercial work, and the line will tell you whether the roofer you reach does. Call (833) 751-2102 and give the building type, the approximate roof area and what is going wrong. The roofer arranges a visit, and this line cannot promise a day or an arrival time.
Scale, access and occupancy. The roof is usually larger and flatter, with drains and equipment, and the building is in use below. The scope covers working hours, tenant protection and coordination, and the roofer's capability for low-slope systems matters more than for shingles.
A house owner decides alone. A commercial owner may need to inform tenants, the lender and an insurer. A written scope helps with all of them.
Ask the roofer about experience with your type of roof and building.
The owner or authorised manager signs with the roofer. The contract should name the scope, the price, the schedule, the permit arrangement and the roofer's New Jersey home improvement contractor registration number, which begins with 13VH, subject to current rules. This line is not a party to it.
Whether a registration applies to a particular commercial job is a question to check with the Division of Consumer Affairs. This site does not state a threshold.
For Pennsylvania buildings, the Attorney General's registration applies once annual work reaches $5,000, and contracts over $500 need statutory terms.
Often a good deal, if the work is planned in phases, with protection below and notice to tenants. Noise, dust and access routes are the main concerns, and the roofer should state what is proposed for each in the scope.
Some work, such as leak repair, is quick. A full replacement takes longer and needs more planning.
Ask the roofer how they would handle your building's entrances and neighbours.
Clear drains before the first snow, check parapet flashing and look for sagging areas. Warren County gets roughly 30 to 40 inches of snow a year, and melt on a flat roof needs a clear path out. A roofer can inspect in autumn.
Ask about snow load questions that exceed roofing, which may need a builder or engineer.
See roof inspection for what an inspection covers.
The area covered, the system and materials, the tear-off or overlay decision, drainage and edge work, equipment curbs, working hours, tenant protection, permit, disposal, safety measures, schedule and price. Anything outside the scope, such as interior repairs, should be named as excluded.
Scopes for commercial roofs are longer than for houses because more parties depend on them. The lender, the insurer and the tenants may all ask to see parts of it.
Compare scopes line by line, as you would for a house. A cheaper quote often leaves something out.
Yes, if the roof is basically sound. Repairing leaks first, then replacing the worst sections as budget allows, spreads the cost, but it can cost more overall than one planned project. The roofer should explain the trade-off and show evidence of the condition.
A roof that is wet below the surface is not a good candidate for staged repair. A moisture survey, where the roofer offers one, shows what is happening in the insulation.
Write the stages and their triggers into the plan, so each decision is made on evidence.
Never walk a commercial roof without edge protection and a clear understanding of where the hatches and skylights are. Skylights and weak decks can give way.
Say what kind of building it is, who occupies it, the roof area, the roof type if known and where water appears.
The roofer walks the roof, checks the surface, seams, drains, parapets and equipment curbs, and looks at the spaces below where water shows.
The scope states repair or recover or replace, access, working hours, protection of tenants and what is outside the roofer's work, such as interior finishes.
Ask the roofer and the municipal construction office whether a permit applies. The owner or manager coordinates with tenants about access and noise.
The roofer does the work in phases where possible, protects occupied spaces and walks through the finished roof with you, with photographs.
Patching seams, drains and flashing. See flat roof repair for how failures arise.
A new membrane over or in place of the old, decided by the condition of the roof below and the moisture in the insulation.
Buildings with shingle, metal or other pitched coverings above shops. Details follow roof replacement with commercial coordination.
No price is printed for commercial work. It depends on area, system, access and the building's use, and published residential figures do not apply. The roofer confirms the price on site and in writing.
| Job | Typical range | What it includes |
|---|---|---|
| Roof area and system | Measured on site | Area, membrane type and insulation drive material and labor |
| Access and safety | Judged on site | Roof height, hatches, edges and equipment affect staging |
| Occupied building | Planned with the owner | Working hours and tenant protection add coordination |
| Drainage and edges | Scoped separately | Drains, scuppers and parapets add detail work |
| Permit and disposal | Itemized by the roofer | Ask whether they are in the quote |
Your exact price is confirmed on site before any work starts.
Call any hour and explain what is going on. You get a clear price before any work starts.
Washington Borough's downtown, Hackettstown, home to Centenary University and the Musconetcong River, and Phillipsburg, facing Easton across the Delaware, each have blocks where roofs, parapets and neighbouring walls meet. Shared walls mean leaks can cross property lines, and the roofer should note it.
Phillipsburg had about 6,659 housing units and 15,252 residents in the 2020 base, per the Census Bureau, a denser and older urban fabric than most of the county.
The Easton-Phillipsburg riverfront has flood history that affects insurance and ground floors, though not roofs directly.
Hackettstown's older commercial blocks and Washington's downtown buildings often share party walls, so a roofer working near a boundary should tell neighbours and note how water from one roof reaches another.
Why low-slope roofs leak at seams, drains and edges, and what repair or recovering involves on additions and downtown buildings.
What a roof inspection covers, when it is worth booking one and how to read the report a roofer gives you.
Full tear-offs and re-roofs for older Warren County homes, with decking, flashing and permit questions settled in a written scope.
Not sure if you're covered? Check your ZIP code.
The line connects you with a roofer who serves your area and will say whether that roofer takes commercial jobs.
Ask your municipal construction office under the Uniform Construction Code. Rules differ from town to town.
Often, with planning. The scope should say how.
Experience with your roof type, the registration number and a written scope. See flat roof repair.
Often. Ask the roofer for dated photographs and a written summary.