Valspar Concrete & Masonry Waterproofer is a clear, penetrating siloxane water repellent sold at Lowe’s. It’s meant for bare horizontal concrete and masonry, like driveways, patios, walkways, pool decks and basement floors.
| Type | Penetrating water repellent |
| Chemistry | Siloxane |
| Finish | Clear, non-film-forming; doesn’t change color or texture |
| Coats | 1–2, applied wet-on-wet (recoat in 5–10 minutes) |
| Dry time | About 1–2 hours to touch |
| New surfaces | Cure concrete 30 days; let new pavers weather 60 days |
What It Is
It soaks into bare concrete and masonry to help keep out water, salt and dirt without leaving a coating. Because it doesn’t form a film, there’s nothing to peel and the surface keeps its natural look.
Pros
- Invisible protection with no change in color or traction
- Fast application with wet-on-wet coats
- Works indoors and out on horizontal surfaces
- Easy to buy at Lowe’s
Cons
- Bare surfaces only; it won’t penetrate over paint, sealers or curing compounds
- Valspar doesn’t list a silane/siloxane actives percentage, so it’s hard to compare with higher-concentration sealers
- No oil or stain repellency
Who Should Buy It
It’s a good fit for homeowners who want simple, natural-looking water protection for a patio or walkway. For driveways in heavy road-salt areas, look for a sealer with a published high actives percentage. See best silane/siloxane sealers and best concrete sealers.
Application Tips
- Pressure wash and let the surface dry fully.
- Sweep excess joint sand off pavers before applying.
- Apply the second coat while the first is still wet.
How we reviewed this product: this is a research-based review built from the manufacturer’s technical data sheet, current retail listings and owner feedback. We have not run our own hands-on tests of this product. Details were checked in October 2026; always follow the current label.