Side-by-side comparison
Sherwin-Williams ProBlock Interior Oil-Based Primer N/A Gray vs Sherwin-Williams Quick Dry Interior/Exterior Stain Blocking Primer N/A White
| Fact | ProBlock Interior Oil-Based Primer | Quick Dry Interior/Exterior Stain Blocking Primer |
|---|---|---|
| Use | Interior primer | Exterior primer, Interior primer |
| Sheen · base | N/A · Gray | N/A · White |
| VOC (untinted) | 522 g/L | 0 g/L |
| VOC added by tint | Not stated | Not stated |
| Emissions testing | Not documented | Tested (GREENGUARD) |
| Health certification | None found | None found |
| Safety Data Sheet warnings | 7 | 1 |
| Ingredient disclosure | Partial (environmental data sheet) | Partial (environmental data sheet) |
| Safety Data Sheet revised | 8/17/2026 | 9/2/2026 |
Highlighted rows are where the two products differ. Facts come from each maker's documents; "not disclosed" means the maker hasn't published it, not that the product failed a test.
See the score broken down by category
Free. Answer 4 quick questions and create your account.
Scores summarize the evidence makers publish. They don't guarantee safety or predict individual health outcomes. How we score
Sources
Sherwin-Williams ProBlock Interior Oil-Based Primer
Sherwin-Williams Quick Dry Interior/Exterior Stain Blocking Primer