WhatsApp Mon-Fri 8am – 5pm
0333 880 2347 Mon-Fri 8am – 5pm

PHS Modbau Internal Airtight Window Tape

Unsure What Products You Need?

Email In Your Plans/Pictures For A Free Airtightness Consultation.

Fully adhesive tape, with fixed Sd value, for fast and reliable sealing of window and door reveals.



£17.25£57.01 net


PHS Modbau Internal Window Tape

Special full adhesive tape for fast and reliable sealing of window and door reveals.

What Is This Tape For?

This is an airtight sealing tape for sealing and airtightness. You can use it for internal sealing, windows, doors, and with extremely high tack it can be used everywhere from walls to ceilings with the added convenience of being able to plaster over it.



PHS Modbau Internal Window Tape protects against interstitial condensation by having a variable Sd membrane value. In the winter the tape becomes more vapour closed (Sd fixed > 40m) to prevent moisture travelling into the building fabric and condensing due to the reduced temperature. In the summer the tape becomes more vapour open to allow any moisture that infiltrated the wall in the winter to dry out internally.

When doing the airtightness detailing for a loft or suspended timber floor insulation refurbishment, PHS Modbau Internal Window Tape is ideal for sealing the perimeter of the membranes to masonry walls that have been primed with Gerband Primer.

The underside of the self-adhesive tape is full-surface coated with a High Tack adhesive, which is an extremely aggressive adhesive. This allows application even at low temperatures. The split cover foil on this self-adhesive layer allows particularly easy and time saving application. PHS Modbau may be plastered, depending on assessment.

PHS Modbau Internal Window Tape has a special structure allowing it to stretch in the transverse direction for optimal absorption of structural movement. This directional flexibility guarantees durable sealing of reveals.


Features & Benefits 

  • Time saving
  • Versatile usage for walls, floors, doors, windows and ceilings
  • Seals membrane to masonry junctions prior to plastering
  • Can be plastered depending on assessment.
  • Reliable, strong, full surface adhesion.
  • Can be applied to the internal window frame and plastered depending on assessment.


Need Expert Advice on Airtightness, Vapour Control Membranes or Breather Membranes?
Call us at 0333 880 2347
or Email us at info@passivehousesystems.co.uk

Technical Details

Adhesive: Modified acrylate dispersion, solvent-free, 220g/m3
Processing temperature: From -5C, ideal processing temperature 5C to 35C
Processing temperature: From -5C, ideal processing temperature 5C to 35C
Temperature resistance: -40C bis 80C, storage at 15-25C with rH 40-60%
Carrier Material: Special film with non-woven PP lamination
UV Resistance: 3 months
Properties: Sd fixed > 40m
Elongation at tear: Alongside 100-30/ 60, crosswise 150-50/ 100, value in %
Tensile strength: Alongside 190-40/ 80, crosswise 150-30/ 60, N/50mm
Watertightness: W1 in regards to EN 1928


Application Area Preparation

The bonding surfaces must be smooth, dry, free of oil, grease and dust, firm and stable. The jambs and reveals have to be smoothed out according to Din 4108, part 7 for installation of PHS Modbau Window Tape. Especially in low temperatures, it must be ensured that all bonding surfaces are free of any frost and ice. Application surface may require priming Such as Primer 6300 e. g. for solidification of sandy surfaces.

Application at 0 to – 10 °C will reduce initial adhesion, although application is possible at such temperatures, high final strength will need longer time of contact.

Application of Tape
Measure and cut PHS Modbau to length with at least 5cm to spare. Peel the cover foil off the self-adhesive strip and press the strip to the back of the window frame. Proceed in this way on all sides of the window frame to be sealed. The split protective foil on the full-surface self-adhesive layer is peeled off as required and the tape carefully pressed onto the reveals substrate. Ensure that the tapes overlap in the corners. Use a pressure roller to achieve optimal initial adhesion


Part Numbers: Size: Box Quantities: Barcode:
AR9098M 55/15(70mm)X25m 8 5391536370633
AR9098N 85/15(100mm)X25m 6 5391536370640
50/50(100mm)X25m 6 out of stock
AR9098O 75/60/15(150mm)X25m 4 5391536370657
    Your Cart
    Your cart is emptyReturn to Shop