For sealing penetrations in walls made by services pipework or ducting, using mineral fibre intubatt and intumescent mastic, giving fire protection for up to 4 hours, unaffected by oil, moisture, fungus or vermin.
For sealing penetrations in walls made by services pipework or ducting, using mineral fibre intubatt and intumescent mastic, giving fire protection for up to 4 hours, unaffected by oil, moisture, fungus or vermin.