Fitting insulation - Gen-X 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 Aluminised 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.
Fitting instructions - Gen-X 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 Aluminised 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 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.
Manufacturer
Euroform Products Ltd, The Heliport, Lyncastle Road, Appleton, Warrington WA4 4SN
Tel: +44 (0) 1925 860999 Fax: +44 (0) 1925 860066 Email: sales@euroform.co.uk
Page last updated
Tuesday, June 1, 2010
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Gen-X fiting instructions - Step by Step
Follow these easy steps for ease if installation
Gen-X Multi Layer Foil
When installing Gen-X, you will achieve a U-value of 0.20W/m2K when combining it with 12.5mm plasterboard, and Celotex GA4075 or similar, or Knauf Rafter Roll 32 or similar.
In under rafter applications, neither vapour barrier, nor foil backed plasterboard are a requirement.
Installation Guide
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