iTP Powerlon UltraBlock 300 corner iTP Powerlon UltraBlock

FlameOut UltraBlock

Reflective Vapour Control Layers.

Reflective Vapour Control Layers (VCL) for all roof and wall applications.

Reinforced polyethylene membrane incorporating an energy-saving thermo-reflective surface.

Multipurpose membrane: airbarrier + thermo-reflective + vapour control layer.

Impermeable air barrier to increase air-tightness and increases energy efficiency by reflecting heat back into the building.

Prevents moisture within the building envelope from reaching the insulation layer and forming interstitial condensation.


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

Product Information

General information about Powerlon UltraBlock

Product Application

Thermo-reflective vapour control layer for roof and wall applications

iTP's high performance vapour control membrane, Powerlon UltraBlock, is suitable for use in all roof and wall applications.

Product Make-up


Powerlon UltraBlock is a thermo-reflective reinforced vapour control membrane incorporating encapsulated aluminium foil or metallised barrier layers.

Product Properties

UltraBlock 200 UltraBlock 300
Colour Silver/Clear Silver/Clear
Weight 104 g/m² 270 g/m²
Roll Length 50m 50m
Roll Width 1.6m 2m

Product Prices

Buy Powerlon UltraBlock

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 UltraBlock 200, 1.6x50m = 80m² £70.52 £84.62
iTP Powerlon UltraBlock 300, 2x50m = 100m² £216.96 £260.35
iTP Powerbond FR Aluminium Tape 50mm x 47.5m = 47.5lm £7.52 £9.02

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.

UltraBlock 200 UltraBlock 300
Tensile Strength MD 185 / XD 184 MD 290 / XD 300
Nail Tear Resistance MD 120 / XD 160 MD 140 / XD 230
Temperature Range -40 to +70 °C -40 to +70 °C
Water Vapour Resistance > 630 Mns/g > 25,000 Mns/g
Thermal Reflectivity 0.64 0.54
Emmisivity 0.36 0.46
UV Resistance 3 months 3 months

Product Certificates

Please visit the iTP website for product certificates.