FAQ
Roof Questions, Straight Answers
Which roof types can I coat myself?
All four, if you follow the prep sheet — that is the honest answer. EPDM and aluminum are the most forgiving DIY jobs. TPO is unforgiving of skipped primer, and curved fiberglass caps reward a sprayer. If your roof is not safely walkable, hire it out regardless of substrate.
Why is my white EPDM roof streaking my sidewalls?
That is the roof itself washing away — oxidized EPDM sheds chalk with every rain. It means the membrane is thinning and it is exactly the right time to coat: after a proper wash and prime, the SkyTight topcoat becomes the new sacrificial surface and the streaking stops.
How much coating for a 30-foot roof?
A 30 ft x 8.5 ft roof is ~255 sq ft. At 85 sq ft/gal and two coats, that is 6 gallons of membrane plus roughly a gallon equivalent for detail work — call it 7, with primer and cleaner sized to match in the kit.
How long until I can walk on it and drive?
Dry to touch in 2 hours, rain-safe in 4, walkable and highway-ready at 24 hours, full cure at 7 days. Between coats, respect the 4–24 hour recoat window — past 24 hours, scuff and solvent-wipe before recoating.
What lifespan should I expect, and how do I renew it?
Ten-plus years on a properly prepped roof. Renewal is a wash and a single fresh coat — no stripping, no primer, because you are recoating your own membrane. That maintenance recoat is a half-day job.
Can I coat in early spring when nights are still freezing?
Days at 50°F+ are workable if the roof is dry, but the film must skin before evening dew and must not see freezing during its first night. Watch the overnight forecast, start by 10 a.m., and when in doubt wait two weeks — the coating keeps in the pail, unlike a rushed job on the roof.
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