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Roof coating cost calculator (2026)

Estimate a protective roof coating for a flat or metal roof by area and type.

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A coating can seal and extend a flat or metal roof for far less than replacement. Enter your roof area and coating type for a fast 2026 price range.

Estimated coating cost
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A coating extends a sound roof — it won’t save a failing one. A pro checks the deck first.

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When a roof coating makes sense

Coatings seal a sound flat or metal roof, reflect heat, and add years — for a fraction of a tear-off. Silicone handles ponding water best; acrylic is the budget option; elastomeric sits in between. A coating only works on a roof that’s still structurally sound, so a pro should inspect the deck first.

Cost ranges reflect 2026 U.S. installed prices (BLS producer/labor data, Remodeling Cost vs. Value, and manufacturer pricing). Your real price depends on your roof, region, and pro — see the full cost guide.

FAQ

Roof Coating Cost Calculator questions

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Most coatings run $1–$4.50 per sq ft installed — roughly $2,000–$6,000 for a typical flat roof. Silicone costs the most; acrylic the least.
On a sound flat or metal roof, yes — it can add 10+ years, cut cooling costs by reflecting heat, and stop minor leaks for far less than replacement. It won’t rescue a failing roof.
A quality coating lasts about 10–20 years depending on the product and climate, and many can be recoated to extend life further.
Coatings suit flat and metal roofs that are still structurally sound and dry. Wet insulation, rotted decking, or widespread damage must be fixed first — or the roof replaced.

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