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PHS Modbau Internal Airtight Window Tape

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Adhesive internal tape for fast and reliable sealing of windows 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.


Product Details

PHS Modbau is used to seal the airtight envelope of your home. It will permanently bond to the surface and create an airtight seal around windows and doors.
It’s an easy-to-install, permanent solution for an airtight seam.

When not properly sealed, warm air will leave the building through the gaps in the frame of your windows and doors. Air leakage through these gaps is one of the main causes of high heating costs in buildings.

The common solution used to be to seal around the window with expanding foam, but this is not a long-term solution as expanding foam will degrade overtime, won’t give an airtight seal, and is vulnerable to moisture, leading to progressively higher heating costs.

This is why Modbau is now regularly used in new builds and retrofits to prevent air leakage and save on the long-term heating cost of the build by providing a permanent seal.


Features & Benefits 

  • ‘Time Saving – Save time with an easier install. PHS Modbau has an easy-to-install split with the ability to plaster or paint over the tape itself.
  • Versatile – often used in suspended floors, wall junctions, door and window frames.
  • Sticks to most surfaces – can be used on masonry, concrete, and metals; will require rough or dusty surfaces to be primed to ensure a long-lasting and airtight seal.
  • Can Be Plastered & Painted

Use Cases

PHS Modbau is primarily used to seal window and door reveals in new builds and retrofits. Improperly sealed windows and doors can be responsible for up to 40% of the warm air leaving your house.


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
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