Rockwool Ablative Coated Batt

Rockwool Ablative Coated Batt is a dense stone-wool insulation product designed to prevent fire from spreading. A fire-protective (ablative) layer on each side of the batt helps prevent fire and smoke from penetrating gaps and service holes.

What is ablative coated batt?

An Ablative Batt is a mineral wool panel coated with a special ablative layer that chars and insulates upon exposure to fire. When exposed to fire, the coating chars (ablates), protecting the wool inside and blocking heat, flames, and smoke from passing through wall or floor voids. This action restores or preserves the original fire resistance of the structure.

What is Rockwool ablative batt used for?

Ablative batts are installed to prevent the spread of fire and smoke between compartments. They help:

• Seal gaps and service penetrations such as pipes, cable bundles, and ducts
• Reinstate fire integrity, particularly at head-of-wall details
• Fill voids in masonry, drywall, and concrete floors where services pass through

Benefits of Rockwool ablative batt

The advantages of installing Ablative Coated Batt include:

• Restores fire resistance – Tested to provide up to 4 hours of fire resistance, depending on product thickness and the tested configuration.
• Blocks smoke and air – The coated faces improve smoke and air-sealing compared to bare batts.
• Improves acoustics – Fills voids and helps reduce sound flanking where services pass.
• Easy to handle on site – Available in standard sizes. Can be cut to fit and installed in apertures.