Our commercial roof coating services in Somerset cover metal, silicone, acrylic, spray foam, and shingle systems, each matched to the roof slope and the steel underneath.
Every system below goes on after the same roof walk. The fit line on each card names the roof where that system earns its place.
Built for exposed-fastener and standing seam steel: rust gets primed, failed screws get replaced, laps get fabric, and full coats cover the field.
Chosen for low-slope panels where water lingers near the gutters, since silicone resists ponding and sun. Any future recoat stays silicone.
Picked for pitched metal that drains quickly. Acrylic stays clean and bright and accepts acrylic or silicone recoats, though it needs warm, dry cure days.
Installed where a building also needs insulation. Foam fills R-panel flats and buries the screws, then a coating protects it from sunlight.
Reserved for commercial shingle sections whose tabs lie flat and keep their granules, with approval from the shingle and coating makers.
Most metal roofs need a coating system. Some also need insulation, and a few have too little solid steel left to coat.
The roof walk decides the column. A building can also mix them, such as coating the main roof and replacing a few panels at the eaves first.
A ballpark number based on roof size takes a few minutes. The system choice comes from the inspection that follows.
Whichever system goes on, these five steps come first and in this order.
Panels, fasteners, laps, skylights, gutters, and curbs are checked, and a look from inside shows purlins, insulation, and any stains that point to leaks.
Slope, ponding, insulation, and the coating already on the roof decide between acrylic, silicone, foam, or repair work before coating.
Washing, rust priming, new screws, and new metal where panels failed get the surface ready, and a test patch confirms the coating bonds.
Laps, seams, skylight edges, curbs, and penetrations receive fabric or seam tape set in a base coat, so joints can flex with the steel.
Field coats build to the specified thickness, checked with a wet film gauge, and a final walk marks anything that needs another pass.
Owners ask these before choosing between coating, foam, and new panels.
System Choice
A coating adds a waterproof surface on top of the existing roof, and the panels keep carrying the load. Panels, purlins, and insulation stay put. That keeps the building dry during work, and it means loose panels, bent ridge caps, and rust holes are fixed before coating.
Pitch and drainage usually decide. Silicone resists ponding and holds up to sun but collects dirt, and only silicone bonds to it later. Acrylic softens where water sits, stays cleaner, and recoats with acrylic or silicone. Urethane is a third choice for roofs with heavy foot traffic.
Cost
Roof size and the repair work before coating set most of the price. Fastener count, rust coverage, the coating type and number of coats, skylights, curbs, gutters, lift access, and any foam thickness all add up. Two roofs of equal size can land far apart once screws are counted.
It comes down to how much steel is still solid. Surface rust with a few leaking screws gets coated. Widespread fastener and lap leaks on firm panels get restored. Scattered rust-through gets new panels before coating, and rust-through across most of the roof means a new system.
Getting Started
The core prep stays the same: wash, prime rust, replace failed screws, and reinforce joints. Foam adds masking and overspray control and a dry, clean substrate. Silicone over old silicone needs a cleaner wash, and shingles need loose tabs secured and flashings sealed.
Yes. A plant might get silicone on a low addition and acrylic on the pitched main roof, or foam over the heated shop and coating over the storage side. Products are chosen so they stay compatible where the two areas meet.
Start with a ballpark range, then let the roof walk pick the system.
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