This service
Silicone
- Slope
- Low slope and flat areas
- Slow drainage
- Holds up once outlets are fixed
- Cure
- Cures in damp air, cooler days
- Dirt pickup
- Holds dirt; rinse before recoat
- Future recoats
- Silicone only, cleaned first
Low-Slope Roofs
Allentown Silicone Roof Coating Contractor
Silicone That Seals Low-Slope Seams, Laps, and Drain Edges
As an Allentown silicone roof coating contractor, we coat low-slope metal and membrane roofs after fixing drainage, wet spots, and failed seams.
- Built for low slopes
- Drains checked first
- Heavy single-pass film
- Recoat with silicone later
Is Allentown Silicone Roof Coating Right for This Roof?
Allentown silicone roof coating works best on low slopes with dry insulation. Here is how it compares with acrylic on the same roof.
Compare
Acrylic
- Slope
- Pitched panels that shed water
- Slow drainage
- Breaks down where water sits
- Cure
- Needs dry, mild days per pass
- Dirt pickup
- Stays brighter with less pickup
- Future recoats
- Easy acrylic recoats
Silicone Roof Coating Problems We Fix on Allentown Roofs
Silicone goes over flat and low-slope roofs, so the problems ahead of it are mostly about water and adhesion.
Clogged Outlets
Leaves, grit, and ice debris narrow drains and scuppers until water backs up. Outlets get cleared and repaired before coating. Strainers go back on so leaves stay out of the drain.
Ponding Rings
A ring of dirt marks where water sat for days. We check whether panels or deck have sagged under it and correct what we can. Shims or deck repairs follow where the steel has sagged.
Wet Insulation Pockets
Soft spots underfoot often mean wet insulation. Those sections are cut out and replaced so silicone is never trapping water. New insulation goes in dry and fastened before coating.
Asphalt Bleed-Through
Older asphalt-based coatings can stain silicone from below. A blocking primer goes down first when testing shows bleed. A small test square shows bleed within a day or two.
Membrane Seam Edges
Lifted edges on single-ply seams are re-adhered and reinforced, because silicone bridges the seam but cannot glue it shut. Seam edges get fabric before the silicone coat.
Service Traffic
Silicone is slick when wet and wears along walked lines. Walk pads or a granule surface go on the routes to equipment. Granules give boots grip on the coated roof.
Commercial Roof Coating Options for Allentown
Silicone jobs differ by what lies underneath and how water moves. These are the variations we choose between.
Over Metal Panels
Silicone over primed steel on low-pitch metal roofs, with fastener caps and lap fabric bedded in first. Lap fabric goes in before the silicone coat.
Over Single-Ply Membrane
Cleaned and primed TPO or EPDM gets silicone after its seams are checked and loose edges are re-adhered. Seams get primed after cleaning.
Over Aged Silicone
Existing silicone is washed, tested for adhesion, and recoated with silicone at the thickness the old film lost. Washing removes dirt that would block adhesion.
Drain-Area Reinforcement
Extra film and fabric around drains and scuppers, where water collects longest after a storm. Fabric there resists the longest wet periods.
Granule Walkways
Roofing granules broadcast into wet silicone along service routes for footing and wear. Routes to rooftop units get the most granules.
Benefits of Coating Your Roof
On the right low-slope roof, silicone closes the failure points and stays flexible through Lehigh Valley winters.
Before Coating
- Water sitting around drains after rain
- Seams and laps leaking in heavy storms
- Dark roof surface heating the space below
- Scattered patches of mixed materials
- Fastener rows rusting on low-pitch steel
After Coating
- Outlets cleared and drain areas reinforced
- Seams bridged by a heavy, flexible film
- A white surface reflecting summer sun
- One continuous surface over old repairs
- Fastener rows capped and sealed
Water Standing On Your Flat Roof?
Call us before it freezes into the seams. We will check the drains and outlets first and tell you what is holding the water.
Silicone Roof Coating Steps for Allentown Buildings
These four calls decide whether silicone goes on and how much of it.
- 1
Inspect Your Roof
Drains, seams, laps, curbs, and the condition of whatever finish is on the roof now. We probe soft areas and check the deck from below.
- 2
Why Does Water Stay?
Blocked outlets, sagging deck, or debris at the edge each have their own fix. Silicone is never the drainage repair itself.
- 3
Primer Or Not?
Adhesion tests and bleed checks on the existing surface tell us whether a primer goes down first and which one the product calls for.
- 4
When Can It Cure?
Silicone handles cooler, damper days than acrylic, but the roof surface and seams must be dry and dew-free when it goes down.
- 5
How Much Film Goes On?
The product sheet sets the dry thickness. Silicone usually goes on in one heavy pass, with extra film and fabric around drains, curbs, and seams.
Other Roof Coatings Allentown Owners Compare With Silicone
Owners weighing silicone often look at these services for other parts of the same building.
Commercial Metal Roof Coating
Full rust, fastener, and lap work on steel panels.
Acrylic Roof Coating
The water-based choice for well-drained pitches.
Spray Foam Roofing
Continuous insulation under a silicone or other topcoat.
Shingle Roof Coating
Asphalt shingle sections that pass inspection.
Allentown Silicone Roof Coating Questions
Performance
Does silicone roof coating work on metal roofs?
Yes, on low-pitch metal roofs with firm panels. Silicone handles slow drainage and stays flexible in cold weather. The panels still need rust treatment, fastener work, and sealed laps first; silicone protects the surface but cannot fix attachment or wet insulation.
How long does silicone roof coating last?
That depends on its installed thickness and what happens afterward. Watch for lost adhesion, worn spots at moving details and walk paths, and thin coverage. We separate those from surface dirt during inspections, since dirt alone is cosmetic.
Comparing
Silicone vs acrylic roof coating: which suits a metal roof?
A metal roof alone does not decide it. Drainage, the existing finish, application weather, and future repairs do. Silicone favors low slopes and slow runoff; acrylic favors pitched panels. Either needs proper prep and detail work.
Can silicone be recoated with acrylic later?
No. Acrylic will not bond to silicone. Plan on silicone for every future recoat, after washing the old surface and confirming adhesion.
Water
Can you put silicone coating over ponding water?
Silicone tolerates standing water better than acrylic, but it does not make recurring puddles harmless. We inspect outlets, panel deflection, and debris to find why water stays, fix that, and only then coat.
What if the insulation under the roof is wet?
Wet sections get cut out and replaced first. Coating over wet insulation traps the water, which keeps the deck rusting from below.
Planning
Is silicone slippery for maintenance crews?
When wet, yes. That is why routes to rooftop units get walk pads or granules broadcast into the wet coating. Technicians should keep to those paths, which also protects the coating from wear.
What does a silicone job cost on a low-slope roof?
Coating plans start around $2.50 to $4.00 per square foot. Drain repairs, wet insulation replacement, primer for bleed-through, and the number of curbs and seams move the number on a given roof.
Does silicone need to be cleaned over the years?
A rinse helps. Silicone holds airborne dirt, which dulls its reflectivity. Washing before an inspection shows the true film condition, and any recoat must start from a clean surface.
Hire an Allentown Silicone Roof Coating Contractor
Tell us about the low-slope roof and where water sits, or call to schedule a look at the drains and seams.