Field reference / sourced data
Interior paint coverage by surface
Compare planning coverage per gallon and coat for smooth and porous interior surfaces. Values support planning estimates; check the current product sheet and local code before purchase or construction.
| Surface | Coverage | Unit | Source edition |
|---|---|---|---|
| smooth | 400 | ft²/gal/coat | Interior paint coverage guidance |
| porous | 300 | ft²/gal/coat | Interior paint coverage guidance |
Source: Sherwin-Williams product coverage guidance. Edition: Interior paint coverage guidance. Retrieved 2026-09-05.
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