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United States
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Bona R540 is a multipurpose, damp-proofing primer, specially designed to mitigate vapor transmission on wood subfloors.



• Mitigates potential moisture issues in new construction
• Can be used as a sealer for concrete subfloors up to 95%RH & 18lbs*
• Excellent penetration properties
• Increases adhesion over sealed plywood floors
• Easy to use, one-component