Internal Aluminium Window Tape - clearance due to change of the supplier



Compared to the most tapes of competitors, the KONTEX® window tape uses an aluminium layer instead of the plastic film to provide a higher water vapour permeability value. KONTEX® Aluminium window tapes are completely vapour resistant instead of vapour inhibiting, which is important whenever your building has a non-breathable external cladding (e.g. ETICS).

All KONTEX window tapes have been independently tested by the ift Rosenheim (the leading institute for windows).

The internal window tape covers the joints between the window frame and the masonry on the inner reveal. It prevents that dampness intrudes into the construction. According to the actual Irish Building Regulations (Part L), this kind of sealing is mandatory.

The KONTEX® Aluminium Window Tape for internal sealings  is easy to apply and can be painted or plastered over.

It has an adhesive strip on one side that sticks to the window frame. For the proper connection to the blockwork, you need our Belgaseal 310/600 air tight sealant.

The tape is available in various widths.

Every roll has a length of 25m.


Required additional Belgaseal Air Tight Sealant per 25m roll (based on our own experience):

  50mm - 100mm width / 4 tubes of Belgaseal 310 / 2 sausages of Belgaseal 600

120mm - 150mm width / 5 Tubes of Belgaseal 310 / 2.5 sausages of Belgaseal 600

200mm - 250mm width / 6 Tubes of Belgaseal 310 / 3 sausages of Belgaseal 600


Test results according to report 5114 / 7524-1 MPA Braunschweig, GER

Water resistance test:               passed / DIN EN 1928

Water vapour permeability:     SD> 1500 / DIN EN ISO 12572

Airtightness:                               air tight / DIN 4108 Part 7



Internal Aluminium Window Tape


  • 1 kg
  • Limited Availability
  • Delivery within 1-3 days