Exterior Paint for a 40×50 House
A 40×50 house with 9 ft walls has about 1,620 sq ft of wall — roughly 11 gallons for two coats. Subtract big windows below for a tighter number.
Paint to buy
11 gal
Wall area
1,620 sq ft40×50 footprint, 9 ft walls (gross)
Paint (2 coats)
10.8 gallonsbuy 11 gal
Coverage
300 sq ft / gallonper coat, exterior surface
Paint cost (est.)
$495~$45/gal exterior
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