Bostik - Roll-Cote (4 Gallon) Moisture Barrier - Vapor Coating Primer

Bostik Roll-Cote (4 Gallon) caters to commercial contractors and residential remodelers managing large-scale flooring projects with aggressive moisture and alkalinity concerns. This water-based, one-component coating serves as a dual-purpose moisture vapor barrier and primer, regulating emissions up to 99% RH on interior concrete. It is best used in the layout phase of a large building to prepare the ground for self-leveling underlayments or glue-down hardwood. Its distinctive black color serves as a visual indicator to ensure 100% coverage, while its rapid-drying formula minimizes downtime, allowing you to move from preparation to installation in just a few hours.

Bostik Roll-Cote™ is a professional-grade moisture-vapor barrier, floor primer, and alkalinity blocker designed for concrete and wood subfloors. This 4-gallon, single-component coating streamlines surface preparation by providing moisture control, substrate stabilization, and a ready-to-bond surface for a wide range of floor coverings.

Roll-Cote applies quickly with a roller, dries fast, and features a black finish for easy visual coverage verification during installation. Its water-based formulation eliminates mixing, reduces jobsite labor, and delivers consistent performance across commercial, residential, and multi-family applications.

Recommended Uses:

• Moisture-vapor barrier for concrete slabs
• Primer for LVT/LVP, sheet vinyl, VCT, rubber, and engineered flooring
• Alkalinity blocker to stabilize high-pH substrates
• Compatible with concrete and wood substrates
• Interior commercial and residential installations

Key Benefits:

• 3-in-1 system: moisture barrier, primer, alkalinity blocker
• Water-based & single component — no mixing required
• Quick drying for fast turnaround
• Black color provides easy coverage confirmation
• Improves adhesive bond strength and reduces installation failures
• Ideal for slabs with elevated moisture or high pH conditions

Size: 4-gallon bucket

Bostik Roll-Cote is engineered for installers who need dependable moisture control and strong primer performance in one efficient, job-ready product.