Drywall Texture Spray Coverage Calculator

Estimate how many boxes of texture mix you need for orange peel or knockdown texture.

Wall/Ceiling Area (sq ft)

Total area to be textured.

Coverage per Box (sq ft/box)

A standard 20-25 lb box of texture mix typically covers 80-120 sq ft, depending on texture heaviness.

Waste Factor (%)

Overspray and hopper priming typically waste 10-15% of material.

Texture spraying uses more material than a simple area-to-coverage math would suggest, because a hopper gun wastes product priming the line and through overspray that never lands on the wall. That's why this calculator adds a waste factor on top of the raw area before dividing by the coverage rate — skipping that step is the most common reason crews run short mid-job. Heavier textures like knockdown use more mix per square foot than a light orange peel, so always check the coverage rate printed on the specific product you're using.

Frequently Asked Questions

How much texture mix does one box cover?

A standard box of pre-mixed or powder texture compound covers roughly 80-120 sq ft depending on how heavy the texture pattern is — light orange peel stretches further than heavy knockdown.

Why does texture spraying need a waste factor?

Hopper guns lose material to overspray and to priming the line before spray starts, which typically wastes 10-15% of the mixed product — building that into your order avoids a mid-job supply run.