Estimating Paint Requirements

Most exterior products will average 400 to 450 square feet per gallon on smooth surfaces. However, some surfaces due to irregularity or roughness of the surface will take considerably more paint. Reference the chart below to get a good idea on the amount of paint you will need.


Asbestos Siding (Sealed)

350 sq. ft. per gallon

Asbestos Siding (Unsealed)

250 sq ft. per gallon

Board & Bat (Rough)

250 sq. ft. per gallon

Board & Bat (Smooth)

350 sq. ft. per gallon

Brick (Rough Sealed)

150 sq. ft. per gallon

Brick (Rough Unsealed)

100 sq. ft. per gallon

Brick (Smooth Sealed)

200 sq. ft. per gallon

Brick (Smooth Unsealed)

150 sq. ft. per gallon

Concrete Block (Filled)

250 sq. ft. per gallon

Concrete Block (Unfilled)

100 sq. ft. per gallon

Haydite Block (Filled)

200 sq. ft. per gallon

Haydite Block (Unfilled)

75 sq. ft. per gallon

Rough Sawed Siding

275 sq. ft. per gallon

Shake Shingles

200 sq. ft. per gallon

Smooth Concrete (Sealed)

400 sq. ft. per gallon

Smooth Concrete (Unsealed)

350 sq. ft. per gallon

Smooth Shingles

275 sq. ft. per gallon

Stucco Medium (Sealed)

150 sq. ft. per gallon

Stucco Medium (Unsealed)

100 sq. ft. per gallon

Stucco Rough (Sealed)

100 sq. ft. per gallon

Stucco Rough (Unsealed)

75 sq. ft. per gallon


It is advisable when estimating the square footage in the average residence to include areas such as windows, doors, etc. in the final figure. Deduct these areas only when they comprise a more than average percentage of the total area.


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