Moisture-variable window sealing tape for in- and outside

603 Alfa FULTRA-2 (with humidity-variable membrane)

Humidity variable window sealing tape for the universal interior and exterior use. For the fast and reliable sealing of connection joints at door and window construction.

733 customers trust this product!
In stock

Goods will be shipped within 24 hours after receipt of payment.

We deliver exclusively to tradesmen, craftsmen and the industry. Our favourable prices are visible only for registered customers. You are a commercial user and not one of our online customers yet? Please take a few seconds to register here:

More views

Item-No. Measures Packacking Unit Price Quantity
603 4070 (030) 70 mm x 40 m Carton (30 rolls) **
603 4010 (018) 100 mm x 40 m Carton (18 rolls) **
603 4015 (012) 150 mm x 40 m Carton (12 rolls) **

Product description

Humidity-variable connection membrane for interior & exterior use!

603 Alfa FULTRA-i window connection tape is a humidity-variable sealing tape with self-adhesive strip for the fast and reliable sealing (interior & exterior) of connection joints at doors and windows.
The provided self-adhesive strip facilitates the fixation to the window frames and door frames. The airtightness to the brickwork can be ensured with our sealing adhesive compound Alfa DS 100.

Only foaming the window frame does not provide an air-tightness since builders' PU-Foam is not airtight nor diffusion-tight. For this reason the use of window connection tapes for receiving an airtight building shell is required according to the energy-saving regulation. Ideal for the use at renovation/restoration and new construction.


  • In accordance with RAL and DIN 4108-7
  • Humidity variable membrane
  • Balances building activities
  • One-sided adhesive strip
  • Can be painted & plastered over
  • Fire class E
  • For interior & exterior use

Proven Quality

Alfa Quality-Seal at fair prices MPA Dresden General building approval


Download as PDF  Download Installation Manual (687 KByte)