Knauf Intumescent and Acoustic Mastic is a rapid curing, water based acrylic expanding fire resistant mastic used for linear joint sealing. The mastic is blue coloured for ease of identification/inspection and supplied in an easy to use 600ml foil for a mastic foil applicator gun.
Please note: This product does not form part of the Knauf Passive Fire Protection Range.
Product code : 53WAFB
Nationwide Delivery
