Zinsser Cover Stain Oil-Based Primer/Sealer Review (2026)
By The DIYPicks Team · Updated July 2026
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- Stains
- New wood
- Exterior
- Odor blocking
A high-hiding oil-based primer that blocks tough stains and tannin bleed on both interior and exterior wood.
Pros
- Excellent stain and tannin blocking, including on cedar/redwood
- Rated for both interior and exterior use
- Strong adhesion and fast recoat for an oil primer
Cons
- Strong solvent fumes; needs ventilation
- Requires mineral spirits for cleanup
- High VOC and limited in some low-VOC regions
Specifications
| Type | Oil-based |
|---|---|
| Recoat | 1 hr |
| Coverage | ~400-450 sq ft/gal |
| VOC | High (~450 g/L) |
| Cleanup | Mineral spirits |
| Use | Interior & exterior |