• Leadax can be used as a water barrier in (cavity) walls and under casings.
  • At the intersection between chimney bases and roof tiles.
  • At chimney flashings to provide a water barrier.
  • Leadax can be applied to the base of dormers and skylights as a waterproofing layer at the joint between dormer side walls and tiled roofs.
  • As a watertight connection between an outside wall and an extension. Use Leadax masonry clips to attach Leadax to masonry joints.
  • Leadax can be used as valley gutters and waterproofing on the ridges of (tiled) roofs.

Frequently used Leadax applications


Aluminium expanded metal on both sides with a layer of modified polyvinyl butyral, with a removable protective film on either side of the product. Leadax is patented.

Colours and sizes

Roll lengths of 6 and 12 metres (3.85 kg per square metre and thus 75% lighter than 18 pounds or code 4 lead). Comes in lead grey as standard. Available in black, roof tile red and other colours on request. Largeur de rouleau entre 15 et 100cm.

Leadax prefab

Leadax is ideal for use as a prefab element. It reduces the time required for installation and manufacturing, and there is no risk of construction errors.

Masonray walls

Voeglood Voeglood 1 Voeglood 2

Cavity walls

Spouwlood Spouwlood 1 Spouwlood 2

Chimney flashings

Loket Loket Loket Spouw