Selleys Blockade is a premium grade sealant ideal for roofing & gutter applications. It is also suitable for other general purpose sealing applications.



  • Paintable
  • Can be applied on wet or damp surfaces
  • Suitable for application on most building surfaces
  • Excellent weatherability

Ideal For 

  • Metal roofing, Roofing tiles, Aluminium/Metal gutters, Pvc gutters
Categories: ,
Size 360g Cartridge
Colour Gray
Full Cure Time 10 hours, best to be left 24 hours
Technology Co-polymer
Use Interior, Exterior

Where can this product be used?

  • Metal roofing
  • Roofing tiles
  • Aluminium/metal gutters
  • Pvc gutters

What materials is this product suitable for?

  • Metal
  • Aluminium
  • PVC
  • Concrete

How To Use

  1. Ensure surfaces are clean (can be applied on wet or damp surface, its ideal if the surface is dry)
  2. Apply a layer of masking tape along the perimeter line where Selleys Blockade is to be applied
  3. Cut cartridge tip with a knife or blade and inset into caulking gun
  4. Attach nozzle on cartridge and cut the nozzle tip at 45 degree angle
  5. Apply on needed surface and, smoothen with a scraper or spatula
  6. Once applied, peel of the masking taped along the perimeters for a clean finishing & leave the sealant to dry for at least 6-8 hours

Handy Tips

  • Wet Surfaces: Keep nozzle as close to surface so the extruding sealant immediately contacts surface. Adhesion will improve overtime when drying (may take additional time to dry)
  • Not recommended for sealing water containment structures or for permanent water immersion.
  • For best results in large joints use bond breaking backing material to limit sealant depth.
  • Blockade may damage some plastics such as styrene foam – test a small area before proceeding.
  • In cold weather store at room temperature for easier use.

Clean Up

  • While sealant is still wet, wipe off excess with clean damp cloth or soaked with turpentine

Data Sheet


TDS – Blockade