As a Scranton silicone roof coating contractor, we check drainage, test primers, and reinforce seams before applying silicone to low-slope metal and flat commercial roofs.
Scranton silicone roof coating suits roofs that drain slowly in places but stay dry underneath. These details show when a roof is ready and when it needs work first.
| Roof Detail | Ready To Coat | Repair First | Replace Instead |
|---|---|---|---|
| Standing Water | Shallow spots that dry within days | Low areas from a sagging deck | Deck failure holding deep water |
| Membrane Or Panels | Firm surface, no soft spots | Blisters or open seams to cut and patch | Membrane shrunk away from edges |
| Insulation Below | Dry readings across the roof | A few wet sections to cut out | Wet readings over most of the field |
| Old Coatings | Earlier silicone or bare surface | Acrylic that needs a primer test | Loose layers peeling across the field |
| Drains And Scuppers | Clear outlets at low points | Strainers missing or outlets clogged | No path for water to leave |
Silicone handles water better than most coatings, but these conditions still come up on the roofs we price.
A sagging deck section or a clogged outlet leaves a shallow pond that never fully dries between storms.
We clear outlets, check the deck, and apply silicone at full thickness through the low areas once the surface is dry.
Short fall days and frost on shaded sections leave less time for the surface to dry and the coating to cure.
Surface temperature and dew point get logged before each pass, and shaded sections wait until frost and dew are gone.
Earlier repairs bridged seams with thin coating that cracked when the roof moved through winter.
Cracked material is cut back, seams are reinforced with fabric or tape, and the new silicone carries across them.
Silicone collects airborne dirt, which dulls the surface and hides small cuts from foot traffic.
The roof is cleaned with the right wash, cuts are repaired with compatible silicone, and a recoat goes on if the film has thinned.
Silicone goes on several roof types here. These are the jobs we see most, plus a cost note for planning.
Shallow-pitch metal buildings that hold water at end laps take silicone well once screws are sealed and rust is primed.
Firm, dry EPDM or TPO with open seams can be cleaned, primed, seam-reinforced, and coated without tearing the membrane off.
Coating plans out at about $2.50 to $4.00 per square foot of roof, against about $5 to $8 to replace. Seam work, thickness, coats, and access set where a roof lands.
Areas that stay wet after a storm get extra thickness, and outlets are cleared so water still has a way off the roof.
Silicone keeps working where water lingers, which matters on flat roofs that drain slowly in a wet spring.
Silicone resists breakdown from standing water better than water-based coatings, so slow-draining sections stay protected between storms.
Open seams and small cracks in a firm membrane are closed under one continuous layer instead of patch after patch.
High-solids silicone builds thickness quickly, so many roofs need one heavy pass plus detail work at seams.
Light-colored silicone reflects heat that dark membrane absorbs, keeping the roof surface cooler on clear days.
Call us about the spots that stay wet after rain. We will check the outlets and the deck before silicone is part of the plan.
Silicone needs a dry, clean surface and the right primer. These four steps get the roof there.
We walk the field after rain to see where water stays, take moisture readings, cut test spots where readings are high, and note every seam and outlet.
Wet insulation is cut out and replaced, outlets are cleared, and open seams are reinforced so the silicone has a firm, dry base.
The roof is cleaned, and a small primer-and-silicone patch shows whether the coating grips the old surface before the full job.
Silicone goes on at the specified thickness, with extra through low spots and seams, and readings confirm each section before moving on.
Owners weighing silicone usually look at these systems too.
Steep-enough metal roofs that drain well can take a full metal system with acrylic or urethane coats.
Scranton Commercial Metal Roof Coating
Acrylic costs less per coat but needs good drainage and a warm, dry stretch to cure.
Scranton Acrylic Roof Coating
Flat roofs with weak insulation can get spray foam first and silicone as its protective topcoat.
Scranton Spray Foam Roofing
Shingle sections on the same building follow the shingle maker guidance, separate from the flat roof.
Scranton Shingle Roof CoatingStraight answers about silicone on commercial roofs.
The biggest ones are upkeep and repairs. Silicone picks up dirt, turns slick when wet, and accepts only silicone for later coats. We check drainage and the existing materials first, since the coating leaves slope and wet layers underneath unchanged.
Metal temperature and cure time matter more than the air forecast. We look at shaded sections for frost, dew, and trapped moisture, and schedule work so preparation and curing both fit inside a dry window.
Silicone is priced on the prepared roof. Plan on about $2.50 to $4.00 per square foot to coat against about $5 to $8 to replace, then adjust for size, access, rust and seam work, fasteners, thickness, coats, penetrations, and flashing.
Yes, with more silicone after a thorough clean. Acrylic and most other coatings do not grip cured silicone, so the first system choice also sets what future maintenance coats look like.
Silicone tolerates shallow water that clears within a couple of days. Deep ponds from a sagging deck point to a structural or drainage problem, and those are fixed first because the coating leaves the slope as it is.
Get a ballpark range for your roof size, or call to have the wet spots and seams checked in person.
