iTP Powerlon UltraPerm

FlameOut UltraPerm

High performance roof & building breather membrane.

Breathable underlays for all pitched roof and timber frame wall applications.

Powerlon UltraPerm is a range of high performance breathable underlays for all pitched roof designs and timber frame wall applications.

High water vapour permeability and exceptional water resistance.

The BBA certified, Powerlon UltraPerm range is fully tested to the latest BS 5534:2014 + A1:2015 zones 1-5.

Non-woven composite membrane with pre-printed marking lines for easy installation.


Available for delivery direct from the manufacturer with an approx. lead time of 2-3 days.

Product Information

General information about Powerlon UltraPerm

Product Application

Breather membrane for roofs and walls

iTP's high performance breather membrane, Powerlon UltraPerm, is suitable for use in ventilated and unventilated, supported or unsupported, cold and warm pitched roofs as well as timber frame walls.

Product Make-up


Powerlon UltraPerm is a thermally bonded composite membrane, made up of two layers of non-woven polypropylene with a microporous film between them, creating a breathable waterproof membrane with exceptional water vapour resistance and water repellant characteristics.

Product Properties

Standard Premium Max
Colour Grey Blue Green
Weight 115 g/m² 135 g/m² 155 g/m²
Roll Length 25m and 50m 50m 50m
Roll Width 1m and 1.5m 1m and 1.5m 1m and 1.5m

Product Prices

Buy Powerlon UltraPerm

These items are shipped direct to site from the manufacturer. Additional delivery charges will apply and will depend whether you require a next day (£25.00 + VAT) or 2-3 day service (£20.00 + VAT) charges will be added manually after the order is placed. Please Click Here for further details, or contact me to discuss your requirements so that I can provide you with an accurate cost.

Product ex-VAT inc-VAT
iTP Powerlon UltraPerm Standard, 1x25m = 25m² £19.21 £23.05
iTP Powerlon UltraPerm Standard, 1x50m = 50m² £37.29 £44.74
iTP Powerlon UltraPerm Standard, 1.5x50m = 75m² £55.94 £67.12
iTP Powerlon UltraPerm Premium, 1x50m = 50m² £49.72 £59.66
iTP Powerlon UltraPerm Premium, 1.5x50m = 75m² £74.58 £89.49
iTP Powerlon UltraPerm Max, 1x50m = 50m² £60.46 £72.55
iTP Powerlon UltraPerm Max, 1.5x50m = 75m² £90.69 £108.82
iTP Powerbond Acrylic Tape 60mm x 25m = 25lm £8.76 £10.51

Reasonable stock levels are held with delivery lead times being around 2-3 working days.

iTP reserves the right to change stocked products - while we will do all we can to keep on top of changes, availability and lead times my vary.

  • Generally 1 or 3 working days for delivery
  • Generally 1 to 5 working days for delivery
  • Generally 5 to 10 working days for delivery
  • Special request or made to order item, allow extended lead times. Minimum order levels may apply.
  • Please call to check availability and approximate lead times

Product Performance and Guides

Product Performance, Manufacturer Downloads, and Installation Guides

Product Performance

For further details on Powerlon UltraBlock's performance, please see the product datasheet or certificates available on the manufacturers website.

Standard Premium Max
Tensile Strength MD 300 / XD 200 MD 330 / XD 230 MD 320 / XD 200
Nail Tear Resistance MD 120 / XD 160 MD 130 / XD 200 MD 140 / XD 230
Temperature Range -40 to +70 °C -40 to +70 °C -40 to +70 °C
Water Vapour Transmission 0.02 Sd 0.02 Sd 0.02 Sd
Water Tightness W1 W1 W1
UV Resistance 3 months 3 months 3 months

Product Certificates

Please visit the iTP website for product certificates.