Bona R540 Primer
The Safe Way to Ease Moisture Issues Quickly!
Bona R540 Moisture Barrier/Primer is a one-component roll-on moisture membrane specially designed to mitigate vapor transmission on absorbent and non-absorbent subfloors. The polyurethane reactive primer is compatible with the entire Bona Adhesive System.
- Mitigates potential moisture issues, like cupping, in new and existing construction
- Substitute for felt paper installed over plywood sub-floors **
- Increases adhesion over sealed plywood floors
- Can be used as a sealer for plywood subfloors up to 20% MC
- Can be used for damp proofing concrete subfloors up to 95% RH & 18 lbs*
- Dries fast allowing nail-down installation immediately
Technical Data Sheet