Newly Developed, BBA Certified, Gen-X Multi-Layer Thermo Reflective Foil Insulation

BBA Certified, Part ‘L’ Building Regulations Compliant, and NHBC Accepted ... Gen-X® seven layered, 33mm, multi-foil insulation, is an all-in-one complete thermal insulant, and vapour barrier that can seal the envelope of the building.

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. It also helps seal your roof against climatic elements such as wind and damp whilst retaining ventilation. It has an exceptional high water vapour resistance with a measured value in excess of 6000MNsg

Gen-X's BBA Certificate indicates that it is ideal for applications requiring secondary insulation such as Celotex Tuff-R GA4075 or 100mm glasswool (0.032W/m2K). And, in under roof installations does not require either a vapour barrier, nor foil-backed plasterboard ... which equates to considerable cost savings.

When installed as directed in Gen-X's BBA Certificate, it will create a thermal airtight roof-space with minimal air leakage. That, combined with the target U-Value achieved, will give additional energy savings that will dramatically reduce your carbon emissions. Roofs incorporating Gen-X® can contribute to a building meeting its target emissions rate by reducing its carbon footprint.

Description

Gen X Multifoil Insulation is an insulation material comprising outer layers of coated metallised film, laminated to a polymer fabric enclosing the core and stitched and taped along both long edges.

The core of the product consists of three layers of polyester fibre wadding (white colour) separated by two metallised film layers.

The product is available in the following size:

Length 12.5 meters • Width 1.2 meters • Thickness 33.0mm

Ancillary items used with the product can include:

Aluminized self adhesive tape • 14mm galvanized staples or nails • Vapour control layer • Roof tile underlay or Breather Membrane • Pre-treated counter battens, softwood battens and tiling laths • Roofing slates or tiles • Additional insulation where required.

Usage

Gen X multifoil Insulation is a flexible insulation used in conjunction with other insulation materials to reduce the U value (thermal transmittance) in new or existing pitched roofs.

The product is for use above and below rafters.

When installed under the rafters, the product performs as a vapour control layer in the roof system

The product is for use in constructions where the ceiling follows the pitch of the roof and encloses a habitable space.

The product must be used in conjunction with an appropriate roof tile underlay. Care must be taken to ensure that the product is covered after installation, as it must not be exposed to rain, showers or wind-driven rain.

Care must be taken to ensure the product does not come into contact with heat sources greater than 80°C.

Practicability of installation The product can be installed simply by following the instructions supplied.

Installation

The installation of Gen X Multifoil Insulation and additional insulation products should be in accordance with the instructions included within BBA Certificate 08/4543 and current good building practice.

During construction, care must be taken to ensure the product is not damaged during installation. Should damage occur by tearing, the product should be repaired with tape or replaced.

The product is attached to the rafters by using staples or nails of at least 14 mm length.

The product must have overlap joints of at least 50 mm and be taped along the entire length of the joint with Aluminised Self Adhesive Tape.

When the product is cut to fit around openings, eg the roof perimeter, care should be taken to minimise gaps.

The product can be cut easily by using sharp scissors or a knife.

Any exposed cut edges of the product should be sealed with aluminised adhesive tape.

Prior to fixing the product, sufficient time must be allowed for the dispersion of solvents contained in some wood preservatives and damp-proofing treatments where applied. Backgrounds should be allowed to dry out before fixing the system.

Procedure for below rafters installation

Installation starts from the ridge with the product being unrolled parallel to the eaves.

As the product is unrolled across the rafters, it is fixed in place using nails or staples of at least 14 mm depth.

The next roll must overlap the preceding layer by at least 50 mm, and the overlap should be sealed along the entire length using tape

The product should be permanently held in place using wooden battens fixed with nails. Battens may run perpendicular to the rafters.

When the bottom layer has been battened, any excess material may be cut by running a sharp knife along the edge parallel to floor level.

Any exposed cut edges of the product should be sealed with a suitable adhesive tape. Any tears or holes in the outer layer should be repaired with aluminised self-adhesive tape.

A plasterboard is fixed to the battens. The batten size should be at least 32 mm by 25 mm, and fixed with sufficient fixings. This batten size should be sufficient to ensure a 20 mm air gap between the product and the plasterboard. Additional insulation

When used with other additional insulation materials, care should be taken to ensure that all gaps are maintained in accordance with the manufacturer’s instructions for their products, and advice should be sought from the Certificate holder.

Rigid polyurethane (PUR) or rigid polyisocyanurate (PIR) products can be placed with a 25 mm gap above and below the Gen X insulation between rafters. Suitable fixings such as wooden battens nailed to the sides of the rafters or clips should be used in accordance with the manufacturer’s instructions.

Procedure for above rafter installation

Installation starts from eaves and the insulation is unrolled parallel to the eaves.

As the product is unrolled across the rafters it is fixed using nails or staples of at least 14 mm length.

The next roll must overlap the preceding layer by at least 50 mm, and the overlap should be sealed along the entire length using Gen X tape.

The product should be permanently fixed in place using wooden counter battens 32 mm by 25 mm parallel to the rafters, held in place with nails.

When the top layer has been counter battened, any excess material may folded over the ridge and counter battened on completion of the opposite pitch.

A breathable roofing membrane (ie roof tile underlay) should be installed on the counter battens and tiling battens attached perpendicular to the rafters.

Roof tiles or slates are installed in accordance with BS 5534 : 2003.

When applying roof tiles or slates to a warm roof construction the recommendations of the tile/slate manufacturer should be followed.

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