If Your Roof
Is a cold flat roof over a brick factory
One sprayed layer adds insulation and covers old patches with a continuous surface.
Start WithFoam and topcoat
Foam And Topcoat
Philadelphia Spray Foam Roofing Contractor
Spray Foam Roofs for Brick Factories, Plants, and Flat Warehouses
As a Philadelphia spray foam roofing contractor, we spray polyurethane foam over dry, fastened roofs and seal it with a protective topcoat in the same project.
- Dry Roof Confirmed First
- Foam To Written Thickness
- Air Intakes Covered
- Topcoat Same Project
When Philadelphia Spray Foam Roofing Makes Sense
Philadelphia spray foam roofing works over a dry, attached roof that needs insulation or a smoother surface. These cases show the fit.
If Your Roof
Has screws and ribs on a metal deck
Ribs get filled and fasteners buried, ending the screw-by-screw leaks.
Start WithFoam over metal
If Your Roof
Ponds in shallow dips across the field
Extra thickness builds up low spots and sends water toward drains.
Start WithTapered foam
If Your Roof
Leaks through loose or wet panels
Spraying over loose metal or wet insulation hides the problem and lets it grow underneath.
Start WithRepairs before any foam
Spray Foam Roofing Checks on Philadelphia Industrial Roofs
Foam bonds to whatever is under it, so the roof below gets a hard look in five areas before any spraying.
Deck And Insulation
Moisture under the old roof turns to vapor and lifts foam. A moisture survey and core cuts show which areas come out before spraying. Wet board comes out before spraying.
Metal Attachment
Panels that move under foot flex the foam above them. Loose sheets get fastened down so the foam sits on a stable base. Loose sheets are screwed down first.
Walls And Edges
Foam runs up parapets and over edges, so loose coping and soft mortar at the roof line are repaired first. Coping gets reset where it rocks.
Intakes And Neighbors
Overspray drifts in wind. Air intakes, cars, and nearby buildings get covered, and spraying stops when gusts pick up. Car covers stay on until the foam cures.
Penetrations
Pipes, curbs, and drains get foam built up around them carefully so water flows past each opening rather than toward it. Each opening gets a smooth foam collar.
Commercial Roof Coating Options for Philadelphia
Foam roofs differ in thickness and topcoat. These four choices come up on most flat and metal roofs we look at.
Cost
Spray Foam Roofing Cost Per Square Foot
A full foam roof needs its own price, separate from the $2.50 to $4.00 coating range, because foam thickness and repairs drive it.
Topcoat
Silicone Topcoat Over Foam
Silicone over foam handles lingering water and strong sun, and later gets recoated with silicone.
Topcoat
Acrylic Topcoat Over Foam
Acrylic works over foam on roofs that drain quickly, with a granule broadcast in walk areas.
Recoat
Spray Foam Roof Recoating
An aging foam roof with a worn topcoat but firm, dry foam can take a fresh topcoat after cleaning and repair of any damaged spots.
Benefits of Coating Your Roof
A foam roof and a new conventional roof both start over the existing deck. These are the main differences.
| What Changes | Coating The Roof | Replacing The Roof |
|---|---|---|
| Planning basis | Foam priced on its own scope | About $5 to $8 per square foot |
| Insulation | Added by the foam layer | Separate boards under membrane |
| Old roof | Left in place if dry and attached | Removed down to the deck |
| Low spots | Built up with extra foam | Corrected with tapered board |
| Upkeep | Topcoat renewed over firm foam | Membrane seams and flashing |
| Fasteners | Buried under the foam layer | New fasteners in the new roof |
Cold Rooms Under a Philadelphia Flat Roof? Ask About Spray Foam Roofing
Foam adds insulation and covers old patches in one layer. Get a ballpark coating range and ask for a foam scope during the roof walk.
Philadelphia Spray Foam Roofing From Survey to Topcoat
Foam goes on fast, but the setup takes longer. These five steps cover a typical job.
- Step 1
Inspect Your Roof
We check attachment, deck condition, and moisture across the roof, and mark wet areas and loose panels for repair before spraying.
- Step 2
Remove Wet Areas
Saturated insulation and membrane are cut out and filled so the foam goes over a dry, even surface.
- Step 3
Mask And Protect
Intakes, windows, vehicles, and edges get covered, and a wind plan is set for the days we spray.
- Step 4
Spray The Foam
Foam goes on in passes to the written thickness, built up at low spots and run onto walls and curbs.
- Step 5
Apply The Topcoat
The protective coating goes on soon after the foam so sunlight cannot damage it, with granules on walk paths.
Coatings That Pair With Spray Foam
Foam needs a topcoat, and some roofs need a coating elsewhere too.
Commercial Metal Roof Coating
Metal sections that need coating rather than a full foam layer go here.
Commercial Metal Roof Coating in Philadelphia
Silicone Roof Coating
Our most common topcoat over foam on flat roofs that hold some water.
Silicone Roof Coating in Philadelphia
Acrylic Roof Coating
Quick-draining foam roofs can take this lighter topcoat.
Acrylic Roof Coating in Philadelphia
Shingle Roof Coating
Shingled faces next to a foam-covered flat section need their own check.
Shingle Roof Coating in PhiladelphiaSpray Foam Roofing Questions From Philadelphia Owners
Will spray foam stop leaks in a metal roof?
Foam stops leaks from screws and laps once the metal is fastened down and the insulation below is dry. Over loose panels or an unknown leak source, it only hides the problem, so we find the source first.
How long does a spray foam roof last?
A foam roof keeps working as long as the foam stays dry and the topcoat keeps sunlight off it. Punctures, exposed foam, and moisture are what we check for, and renewing the topcoat over firm foam extends service.
Is spray foam safe to apply on an occupied building?
The work stays on the roof, but fumes and overspray need control. We cover air intakes, schedule around shift changes where needed, and set wind limits for spraying.
Can foam go over a gravel roof?
Loose gravel is removed first and the surface is cleaned and checked for moisture. Foam needs a firm, clean base to bond to.
Does foam change how the roof drains?
It can, in a good way. Extra foam builds up low areas and creates gentle slopes toward drains, which helps flat roofs that pond.
How thick is the foam on a commercial roof?
Thickness depends on the insulation the building needs and the low spots being filled. The scope lists a minimum thickness across the roof and extra build-up at ponding areas and drains.
What does a foam roof need after it is installed?
Yearly checks look for punctures, worn topcoat, and bird or foot damage. Small punctures get sealed right away so water never reaches the foam, and the topcoat gets renewed while the foam is still firm.
Can foam go over a brick building with parapet walls?
Yes, once the coping and mortar at the roof line are repaired. Foam runs up the inside of the parapet to a clean edge, and the topcoat covers it all the way up.
Hire a Philadelphia Spray Foam Roofing Contractor
Tell us about the roof surface and any cold spots or leaks below. We will check moisture and write the foam scope.