Garage paint calculator
A typical 2-car garage is 22 × 20 ft with 9-ft ceilings. Wall area is ~750 sq ft, but garage walls are usually unfinished drywall, plywood, or block — all of which eat more paint. Plan for 3 gallons for two coats. Garage paint should be tough: satin or semi-gloss, washable, mildew resistant.
Estimates round up to the nearest quart and are based on Kompozit's published coverage. Buy slightly more for touch-ups and color changes.
Recommended finish: satin
Garage walls usually take more paint
Unfinished drywall, OSB sheathing, and bare block all soak paint differently than primed-and-painted house walls. Add ~25% to the gallons total if your garage is bare drywall or sheathing.
Don't forget the floor
For the slab, use the floor coating calculator — Kompozit STRONG covers ~225 sq ft/gal in two coats. A 2-car garage floor (440 sq ft) needs about 4 gallons.
FAQ
Light gray. Pure white shows tire skid marks, oil splatter, and dust within weeks. A medium-light gray hides the worst of it without making the space feel cave-like.