How Much More Paint Do Textured Walls Need?
Textured walls have significantly more surface area than they appear. The peaks and valleys of orange peel, knockdown, and skip trowel textures increase the actual paintable surface by 20 to 40% compared to a smooth flat wall of the same dimensions. This means you need proportionally more paint to achieve the same film thickness and coverage.
On smooth drywall, one gallon covers 380 to 400 square feet. On orange peel texture, one gallon covers 300 to 340 square feet. On medium knockdown texture, one gallon covers 260 to 300 square feet. On heavy popcorn or skip trowel texture, one gallon may only cover 200 to 250 square feet.
The type of applicator also matters significantly with textured walls. A thick nap roller (¾ inch) reaches into the valleys of texture and provides more complete coverage than a thin nap roller but uses more paint. Brush-applied paint on heavy texture can achieve good penetration into deep texture but is slow. Spraying provides the most complete coverage on heavily textured walls but uses the most paint due to overspray.
Paint Coverage by Texture Type
| Texture Type | Coverage/Gallon | Extra Paint vs Smooth | Roller Nap |
|---|---|---|---|
| Smooth drywall | 380–400 sq ft | Baseline | ⅜ inch |
| Light orange peel | 340–380 sq ft | +10% | ½ inch |
| Medium orange peel | 300–340 sq ft | +20% | ½ inch |
| Light knockdown | 280–320 sq ft | +25% | ¾ inch |
| Heavy knockdown | 240–280 sq ft | +35% | ¾ inch |
| Skip trowel/popcorn | 200–240 sq ft | +50% | ¾–1 inch |
Best Paint for Textured Walls
Flat and matte finishes work best on heavy texture — they hide the uneven sheen that satin and eggshell can create on pronounced texture peaks. For light orange peel texture in living areas, eggshell is the standard choice. For heavy knockdown or popcorn ceilings, always use flat paint.
High-hide paints with high titanium dioxide content are worth the extra cost on textured walls. The deep valleys of texture can show colour inconsistency if the paint has poor hide. Sherwin-Williams Emerald Interior and Benjamin Moore Aura both have excellent hide ratings that cover textured walls more uniformly in two coats.
Tips for Painting Textured Walls
Always use a thick nap roller. A ½ to ¾ inch nap roller reaches into texture valleys. A thin ¼ inch nap roller skims over texture peaks and leaves valleys unpainted.
Apply more paint per coat. Textured walls need a wetter, heavier coat than smooth walls to fill in the valleys. Do not spread paint as thin as you would on smooth walls.
Use a brush to work paint into deep crevices. After rolling, back-brush heavy texture areas to work paint into deep crevices that the roller skimmed over.
Two coats are always necessary. Textured walls almost always require two coats for uniform coverage — the first coat highlights any missed spots and the second coat evens everything out.
Buy 30% more paint than you think you need. It is always better to have leftover touch-up paint than to run out mid-project with a textured wall that is hard to match exactly.
Related Paint Calculators
- Paint Coverage Calculator →
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- Free Paint Calculator →
Frequently Asked Questions
How much more paint do textured walls need?
Orange peel texture needs 20 to 25% more paint than smooth walls. Heavy knockdown texture needs 35 to 50% more. Always increase your estimate when painting textured surfaces.
What roller nap should I use for textured walls?
Use ½ inch nap for light orange peel texture. Use ¾ inch nap for medium to heavy knockdown and skip trowel texture. A thin ⅜ inch nap is only suitable for smooth walls.
What is the best paint finish for textured walls?
Flat or matte finish for heavy texture — it hides the uneven sheen on texture peaks. Eggshell for light orange peel texture in living areas. Avoid satin and semi-gloss on pronounced texture.
How many coats does textured wall paint need?
Always apply two coats on textured walls. The first coat settles into the texture valleys and highlights missed spots. The second coat provides uniform coverage. Budget paint may require three coats.
How do I calculate paint for textured walls?
Calculate the paint quantity for smooth walls using the calculator above, then multiply by 1.25 for orange peel texture or 1.35 for heavy knockdown texture.
Can I smooth textured walls before painting?
Yes — skim coating over textured walls with joint compound creates a smooth surface and reduces paint usage. It is labour intensive but reduces long-term painting costs on future repaints.