What a Roof Coating Job Actually Involves
A roof coating is not paint. It is a fluid-applied membrane that cures into a seamless skin over your existing roof, so the work starts with a roof condition survey instead of a sales pitch. Call 8778540330 to schedule one.
- We clear the rooftop and scrape the substrate with pry bars and roofing shovels, hauling debris off in a dumpster.
- Blistered asphalt, flaking modified bitumen, and loose granules get cut out before any coating goes down.
- A primer binds chalky, oxidized surfaces so the coating grips the decking instead of sitting on dust.
- Seams, flashing, and pipe boots get reinforcing fabric embedded wet into the base coat for tensile strength.
- We apply the elastomeric coating by roller, squeegee, or airless sprayer to a set dry film thickness.
- A reflective finish coat goes on last; silicone cures fast, while acrylic coating needs longer cure time in humid air.
- Fasteners get reset first, because an overdriven nail or a stripped screw under a new membrane is a leak waiting to happen.
- Any torch work or roof cement repair happens before the coating, never over it.
- Caulk and sealant at a joint are a patch, not waterproofing, and if a bead of adhesive is the honest fix we will say that.
Matching the Coating to Your Existing Membrane
Coating technology has improved, but compatibility still decides whether a system lasts ten years or peels in two. A silicone coating will not bond to a wet, dirty EPDM membrane, and an acrylic coating should never span ponding water. Here is how we pair them.
- TPO and PVC membrane roofs take silicone coatings well because the seam chemistry is compatible.
- EPDM rubber usually needs a polyurethane coating or a specialty primer first, since little sticks to cured rubber on its own.
- Built-up roof and modified bitumen surfaces such as tar, pitch, bitumen, and asphalt accept acrylic elastomerics once bleed-out is primed.
- Metal panel roofs, including standing-seam panel and corrugated panel, take urethane or silicone systems that handle thermal movement; we also check the purlins, battens, and counterbattens holding them down.
- Steep-slope covers like asphalt shingle, architectural shingle, three-tab shingle, wood shake, cedar shake, slate, clay tile, and concrete tile usually are not coating candidates, and the felt or tar paper beneath them explains why.
What Our Roof Condition Survey Looks For
A roofer who quotes a coating without opening the roof is guessing. As a licensed and insured roofing contractor, we walk the whole footprint and photograph the details that actually decide the outcome.
- Ponding water that lingers more than 48 hours after rain, which points to a settled deck or a clogged scupper.
- UV degradation, alligatoring, chalking, and surface blistering that show how much life the membrane has left.
- Seam separation, split laps, back-out fasteners, and corroded screws on metal roofing panels.
- Flashing at the parapet, coping, chimney flashing, step flashing, counter-flashing, apron flashing, and every vent boot.
- Saturated insulation, rotted plywood or OSB sheathing, a truss or rafter that has shifted, and a roof deck beginning to sag or settle.
- Rake, ridge, hip, and gable edges, plus any skylight, dormer, or chimney penetration along the roofline.
- Drainage paths: gutter, downspout, valley, drip edge, eave, soffit, and fascia.
Timelines, Coverage Rate, and Cost Drivers
Most flat roofs we coat take one to two days, weather permitting, with 24 to 48 hours of cure time before foot traffic. Coverage rate matters more than price per gallon. A thin coat over a rough surface fails early and wastes the whole system.
Cost drivers are square footage, penetration count, access, and local building code. A mansard, gambrel, or canopy over a loading door changes how a crew gets up there, and a short overhang can force a scaffold instead of a ladder and safety harness.
Where building code requires it, we add insulation, a vapor barrier, or ventilation through a ridge vent, soffit vent, or attic fan. Anchors for fall protection go in before anyone steps on the roof. Replacement work on steep-slope buildings is measured in roofing squares and run with a nail gun and air compressor. Coating is quieter and cheaper. Your line-item roof estimate is free.
