DAP Blockade Intumescent Fire-Rated Acrylic Latex Sealant is a high-performance, water-based firestop solution designed for interior use. This intumescent sealant expands to fill voids left by burned materials, helping to block fire, smoke, and gases. Ideal for general firestopping applications with both combustible and non-combustible penetrations. Tested to a 4-hour fire rating and easily identifiable with its red colour for inspection.