ALCOLIN PERMOMASTIC is a white, solvent-based building sealant which forms a flexible, durable rubber seal.  It provides excellent adhesion, strength and flexibility, resists cracking and protects against weathering.  Suitable for interior and exterior applications.

Available in white or grey.


280ml cartridges

Uses / Applications

  • Building sealant
  • Pipe joint sealing
  • Primary or secondary concrete joint sealer
  • Repair of cracks and leaking joints
  • Manhole joints
  • Water vapour barrier
  • Bedding and pointing of window and door frames
  • Bedding of window sills
  • Bedding sheet roofing onto structural frames
  • Bedding flanges in gutters, pipes and duct work
  • Bedding components in caravan and coach building
  • Sealing lap joints in construction
  • Bedding beads into glazing systems
  • Sealing roof-bolts
  • Filling chinks, slits and seams between stairs and handrails, skirting boards,etc
  • Draft proofing air gaps
  • Good flexibilitity and durability
  • Heat resistance up to 80°C
  • Good adhesion
  • Paintable
  • Resistant to oils, weak alkali and weak acids

Other Information

  • Not suitable for continuous submersion under water
  • Will not adhere to some plastics such as polyethylene, polypropylene and Teflon
  • May affect some plastic substrates. Test compatibility.
  • Not suitable where movement accommodation of more than 15% is required

This product is currently out of stock and unavailable.