KILZ Original vs Zinsser B-I-N: Oil vs Shellac
By The DIYPicks Team · Updated July 2026
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KILZ Original Oil-Based Primer & Stain Blocker
A low-cost oil-based workhorse for blocking common household stains and odors on interior surfaces.
| Type | Oil-based |
|---|---|
| Recoat | 1 hr |
| Coverage | ~300-400 sq ft/gal |
| VOC | High |
| Cleanup | Mineral spirits |
| Use | Interior |
Zinsser B-I-N Shellac-Based Primer & Sealer
The go-to when you need to seal severe stains, smoke, or pet odors fast on interior surfaces.
| Type | Shellac-based |
|---|---|
| Recoat | 45 min |
| Coverage | ~100-125 sq ft/qt |
| VOC | High (~550 g/L) |
| Cleanup | Denatured alcohol / ammonia |
| Use | Interior + spot exterior |
Our verdict
B-I-N (shellac) is the stronger odor and stain sealer with the faster recoat, ideal for smoke, pet odor, and knots, but it has harsh fumes and a short shelf life. KILZ Original (oil) blocks most common household stains well, costs less per gallon, and is a bit easier to work with, though it can yellow and is interior-only. Reach for B-I-N on the worst odors and stains; KILZ Original is the budget interior workhorse for everyday stain blocking.