How Much Stain Do I Need?
Wood stain coverage varies significantly based on the porosity and roughness of the wood. Smooth sanded wood achieves 250 to 300 square feet per gallon. Rough sawn wood achieves 150 to 200 square feet per gallon. Bare new wood and highly porous wood species like pine and cedar absorb heavily on the first coat and may only achieve 100 to 150 square feet per gallon.
Unlike paint which builds up on the surface, penetrating stains soak into the wood. This means a second coat applied while the first is still wet adds little additional colour — most penetrating stains are applied as a single coat. Solid colour stains behave more like paint and typically require two coats for full coverage.
Always test your chosen stain on a hidden area of the wood before committing to the full project. Wood species, age, and previous treatments all affect how the stain absorbs and the final colour result.
Stain Calculator — Reference Table
| Surface | Coverage/Gallon | 100 sq ft | 200 sq ft |
|---|---|---|---|
| Smooth sanded wood | 250–300 sq ft | 0.4 gal | 0.7 gal |
| Planed lumber | 200–250 sq ft | 0.5 gal | 0.9 gal |
| Rough sawn wood | 150–200 sq ft | 0.6 gal | 1.2 gal |
| New bare pine/cedar | 100–150 sq ft | 0.8 gal | 1.5 gal |
| Weathered grey wood | 100–130 sq ft | 0.9 gal | 1.7 gal |
| Log cabin (round logs) | 80–100 sq ft | 1.1 gal | 2.2 gal |
Types of Wood Stain
Transparent stains add a tint of colour while allowing the full wood grain and texture to show through. Best for new or good condition wood where you want to enhance the natural appearance. Semi-transparent stains provide more colour while still allowing grain to show. The most popular choice for decks and fences. Solid colour stains are fully opaque and hide the wood grain completely. Best for weathered or damaged wood that needs colour correction.
Oil-based stains penetrate deeper and last longer — typically 3 to 5 years. They require mineral spirits for cleanup and have longer dry times. Water-based stains dry faster, clean up with soap and water, and have lower VOC content. They last 2 to 4 years and are the more environmentally friendly choice.
Best Wood Stain Brands
Cabot Australian Timber Oil is the top-rated penetrating oil stain for hardwood and exotic decking. Armstrong Clark Wood Stain consistently earns the highest ratings for pressure treated pine decks and fences. Ready Seal Natural Cedar is a popular combination stain and sealer that requires no primer and is one of the easiest to apply.
For interior wood staining, Minwax Wood Finish and Varathane Premium Wood Stain are the two most widely available and reliable options. Both are oil-based, available in 50 plus colours, and dry in 2 hours.
Tips for Applying Wood Stain
Test on a hidden area first. Wood species and existing treatments affect stain colour dramatically. Always test before committing to the full project.
Apply with the grain. Always brush stain in the direction of the wood grain for the most even finish and best penetration.
Wipe off excess penetrating stain. After applying penetrating stain, wipe off any excess that has not absorbed within 5 to 15 minutes. Excess stain that dries on the surface becomes sticky and blotchy.
Work in sections. Avoid stopping mid-board as this creates lap marks. Work from one end to the other without stopping.
Dispose of oil-stained rags safely. Oil-soaked rags can spontaneously combust. Spread them flat to dry outdoors or submerge in water before disposal.
Related Paint Calculators
- Deck Stain Calculator →
- Fence Paint Calculator →
- Deck Paint Calculator →
- Exterior Paint Calculator →
- Paint Coverage Calculator →
- Free Paint Calculator →
Frequently Asked Questions
How much wood stain do I need?
One gallon covers 150 to 200 sq ft on rough wood per coat. Smooth sanded wood achieves 250 to 300 sq ft per gallon. Always buy 15 to 20% more than calculated.
How many coats of stain do I need?
Most penetrating stains require one coat. Solid colour stains require two coats. Applying a second coat of penetrating stain while the first is wet deepens the colour slightly.
What is the best wood stain?
Cabot Australian Timber Oil for hardwood decks, Armstrong Clark for pressure treated pine, Ready Seal for easiest application, Minwax Wood Finish for interior wood staining.
How long does wood stain last?
Oil-based exterior stain lasts 3 to 5 years. Water-based exterior stain lasts 2 to 4 years. Interior stain lasts 5 to 10 years when sealed with a top coat.
Should I use oil or water based stain?
Oil-based stain penetrates deeper and lasts longer but has higher VOC and longer dry time. Water-based stain dries faster, cleans up easily, and is more environmentally friendly. Both produce similar final results.
Do I need to seal wood after staining?
Penetrating stains do not require a separate sealer — the stain and sealer are combined. Solid colour stains may benefit from a clear top coat for extra durability on high traffic surfaces like decks.