2mm Heatsaver Wall Underliner is an ultra thin basic polystyrene insulation design to avoid condensation problems and subsequent mould growth for a healthier home.

Wall Underliner Heatsaver is an economical only 2mm thick solution used on problematic inside walls of the property to resist damp and mould formation.

To create a more durable and smoother surface we recommend the surface is overlined - Wallrock Fibreliner is particularly tough and strong.

This product is suitable as a localised ‘problem solver’ for cold external walls and is not recommended for use in fire escape routes inside your home.

This product is class E fire rated and should not be used for projects such as new builds and extensions where Building regulations are applicable.

If used as part of a system that both adds to the insulation value and protects the surface from fire it may be compliant but expert advice should be sought.

Surfaces painted prior to 1960 may contain lead pigments and special precautions should be taken when preparing such surfaces.

Specification:

Thickness: 2mm

Roll Width: 500mm

Roll Length: 10000mm

Roll Coverage: 5.00m²

Material: Polystyrene

Applications: Interior

2mm Heatsaver Wall Underliner Features:

 · R Value 0.05 m²K/W.

 · U Value 20 W/m²K.

 · CFC free.

 · Class E Fire Rating. 

 · For quick and easy heatsaving on inside walls.

 · Resists damp and mould formation on problem walls.

 · Can be overhung with decorative wallpaper.

 · Suitable for painting once a lining paper has been applied.

 · Combats the build up of condensation.

2mm Heatsaver Wall Underliner Installation Guide:

 · Ensure that base surfaces are clean, dry, firm and free from any loose or flaking material.

 · Apply the adhesive generously to the wall using a roller.

 · As a guide we recommend 1.25Kg of paste per roll, more if the base surface is uneven or textured, where it is especially important to apply a thick bed of adhesive.

 · Cover an area sufficient to apply one length of Heatsaver Wall Underliner at a time ensuring the pasted area exceeds the width of the Heatsaver.

 · Use a brush or spatula to apply adhesive to areas the roller cannot reach.

 · Apply Heatsaver directly from the roll onto the wet adhesive.

 · Smooth out any bubbles with a roller or similar.

 · Leave a small amount of surplus material for trimming where necessary.

 · Cut off any excess material at the ceiling, floors and corners using a trimming knife in combination with a forming board.

 · On external corners the exposed edge of the material can be filled and sanded with flexible filler to give a neat finish.

 · Allow 48 hours for drying, longer if conditions are especially humid or cold.

 · We also recommend that all wallcoverings are allowed to dry naturally.

 · Recommend that heating is turned off whilst the wallcovering adhesive dries out, unless ambient temperatures are likely to drop below 10°C/50°F.

 · Any small gaps at seams and corners can be filled with flexible filler prior to applying a suitable Lining Paper.

 · We recommend that the Heatsaver is lined before painting or covered with a decorative wallpaper.

 · Use a good quality adhesive for application of this product making sure it is suitable for hanging polystyrene veneers.

 · We strongly recommend using our Wallrock Thermal Liner Adhesive and cannot accept responsibility for adhesion problems if an alternative adhesive has been used.

 · Warning - surfaces painted prior to 1960 may contain lead pigments and special precautions should be taken when preparing these surfaces.

 · Turn off electricity supply before working around plug points, light fittings and switches.

*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet