Wood decks and siding need a finish to shed water and UV. These lower-toxicity options protect the wood with fewer fumes and less environmental impact.
1. Water-based semi-transparent stains
Show wood grain, dry quickly and clean up with water. A good choice for cedar decks and siding.
2. Water-based solid stains
More pigment for better UV protection and a uniform color. Good for older or weathered wood.
3. Plant-based penetrating oils
Oils made from linseed or other plant sources soak into the wood. They need more frequent recoats but are easy to refresh.
4. Low-VOC acrylic paint
For siding and trim, 100% acrylic low-VOC paint gives the longest protection on wood.
5. Mineral-based stains
Silicate and mineral stains bond with porous surfaces and are low in VOC; best suited to specific substrates.
6. Water repellents
Clear water-based repellents slow water absorption on new cedar while it weathers.
7. Low-VOC primers
Priming bare wood and cut ends is the step that most improves finish life.
Choosing a finish
| Finish | Look | Recoat interval |
|---|---|---|
| Semi-transparent stain | Grain shows | 2–3 years |
| Solid stain | Opaque color | 3–5 years |
| Penetrating oil | Natural | 1–2 years |
| Acrylic paint | Opaque | 5–10 years |
Frequently asked questions
Which finish lasts longest on a deck?
Can I put a finish on composite decking?
Do you refinish decks?
