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Gen-X Thin Foil Insulation for Ceilings, Lofts and Roof Spaces

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What is Gen-X®?
Gen-X® is a multi-layer foil insulation, complete thermal insulant, air leakage & vapour barrier in one.
 Gen-X® is fully supported by a technical team that aims to help and guide you when you need it. 
Technical Team telephone number 01925 860999.

How Does Gen-X® Work?

Gen-X® helps seal your roof against climatic elements such as wind and damp whilst at the same time retaining ventilation. Using reflective technology, Gen-X® helps prevent your roof space from overheating in summer by reflecting the electromagnetic radiation from the sun whilst retaining warmth in winter. Gen-X® is ideal for applications requiring a dual layer of insulation.

Confidence

  • BBA Certified
  • Part 'L' Compliant
  • NHBC Accepted

Typical Applications with a U-Value of 0.23W/m2K
(Based on 600mm centres)
Below Rafter Installation & PUR           Below Rafter Installation & Glass Wool
Above Rafter Installation & PUR           Above Rafter Installation & Glass Wool

Complete Thermal Insulant, Air Leakage & Vapour Barrier In One!

  • Lightweight
  • Space-saving
  • Minimal truss depth
  • Minimal additional insulation
  • FREE U-Value calculation service for purchases
  • Combined vapour barrier in one
  • Does not cause allergies or dust

Roll Size1.2mtrs x 12.5mtrs
Thickness33mm
Layers7
Weight13kg per roll
R-Value1.9m2 K/W
Resistance to tearing300-450N (nail shank) (BS EN 12310-1)
FlammabilityClass ‘E’ BS EN ISO 11925-2

Installation Instructions

INSTALLATION ABOVE RAFTERS

Step 1 Starting from the eaves. Gen-X is unrolled across the rafters.

Step 2 Fix to the rafters using 14mm min galvanised staples or nails, keeping Gen-X taut between each rafter.

Step 3 Permanentely fix Gen-X in place by nailing or screwing to 32 x 25mm min wooden counter battens down each rafter.

Step 4 Overlap next roll by at lease 50mm and seal this overlap with Gen-X Tape.

Step 5 Remove excess Gen-X using sharp scissors or knife. At gable ends, ridge and verges allow at least 50mm. This edge should be folded and stapled/nailed and the cut edge sealed with Gen-X Tape.

Step 6 A breathable roofing membrane should be installed on the counter battens and tilings battens attached perpendicular to rafters.

Step 7 Install roof tiles or slates.

INSTALLATION BELOW RAFTERS

Step 1 Starting from the ridge. Gen-X is unrolled across the rafters.

Step 2 Fix to the rafters using 14mm min galvanised staples or nails, keeping Gen-X taut between each rafter.

Step 3 Permanently fix Gen-X in place by nailing or screwing to 32 x 25mm min wooden battens parallel or perpendicular to the rafters. Ensure there is a 20mm min gap by fixing the batten on the 25mm face.

Step 4 Overlap next roll by at least 50mm and seal this overlap with Gen-X Tape.

Step 5 Remove excess Gen-X using sharp scissors or knife. At gable ends, ridge, purlins and wall plate allow at least 50mm. This edge should be folded and stapled/nailed and the cut edge sealed with Gen-X Tape.

Step 6 Fix plasterboard to the battens.

FITTING OF ADDITIONAL INSULATION

When Gen-X is used with other insulation materials, care should be taken that all air gaps are maintained in accordance with manufacturers instructions for an unventilated pitched roof. Gen-X should be installed in accordance with BBA certificate no. 08/4543.

What Gen-X Can Do For You!

Durability

  • Life equivalent to that of the structure to which it is incorporated
  • Help Meet Your Target Emission Rate
  • Roofs incorporating Gen-X® can contribute to a building meeting its Target Emission Rate.

Reduce Carbon Footprint

When installed as instructed, Gen-X® will create a thermal airtight roofspace with minimal air leakage, that combined with the target U-Value achieved will give additional energy savings that will reduce your carbon emissions tremendously.

Complete Vapour Barrier
High water vapour resistance with a measured value in excess of 6000MNsg