TWP 1500 Series Wood and Deck Stain Review (2026)
By Nate Sawyer, Editor · Updated July 2026
DIYPicks is reader-supported. As an Amazon Associate and affiliate of home-improvement retailers, we may earn a commission when you buy through links on our site — at no extra cost to you. This never affects our recommendations.
- Pressure treated wood
- Mold and mildew resistance
- EPA registered preservative protection
- Decks, fences, and log homes
An EPA-registered oil-based semi-transparent preservative stain with mildewcides that resist mold and rot and UV pigments that curb graying, its 1500 formula VOC-compliant in all 50 states. It uses mineral-spirit cleanup with a 4-12 hour dry window, needs a careful two-coat wet-on-wet application, and you must confirm the right series first.
Pros
- EPA-registered preservative with mildewcides that resist mold, decay, and rot
- UV-absorbing pigments help prevent graying, darkening, and fading
- The 1500 series is VOC-compliant and legal to sell in all 50 states
Cons
- Oil-based with mineral-spirit cleanup and a 4-12 hour dry window
- Needs a careful two-coat wet-on-wet application for even results
- You must confirm the correct series for your state VOC rules before buying
Specifications
| opacity | Semi-transparent |
|---|---|
| base | Oil-based |
| coats | 2 coats wet-on-wet |
| coverage | 150-200 sq ft per gallon per coat |
| dryTime | 4-12 hours |
| cleanup | Mineral spirits |
| voc | 250 VOC compliant in all 50 states (1500 series) |
| registration | EPA-registered wood preservative |
Frequently Asked Questions
- Is TWP 1500 good for pressure-treated wood?
- Yes, pressure-treated wood is one of its listed strengths, along with decks, fences and log homes. It is an EPA-registered wood preservative with mildewcides that resist mold, decay and rot, which is a meaningfully different claim from an ordinary stain.
- Why are there different TWP series numbers?
- VOC rules. The 1500 series is 250 VOC compliant and legal to sell in all 50 states, while other series exist for different regional limits. Confirm the correct series for your state before ordering - buying the wrong one is the common mistake with this brand.
- How do you apply TWP 1500?
- Two coats wet-on-wet, which needs care to get an even result - you are not waiting for the first coat to dry. Coverage is 150-200 sq ft per gallon per coat and dry time runs 4-12 hours.
- Will TWP stop a deck from graying?
- It helps. The UV-absorbing pigments are formulated to prevent graying, darkening and fading, which is more than a clear penetrating oil offers. It is oil-based, so cleanup is mineral spirits rather than soap and water.