Erfurt MAV

01427 616597
enquiries@erfurtmav.com

Heatsaver 2mm Wall Underliner

Red Label Heatsaver


Heatsaver is an economical 2mm thick polystyrene liner containing fire retardants that provide basic insulation as well as combating condensation problems and subsequent mould growth for a healthier home. 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 unless the surface is further treated with a fire retardant covering. 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.

To see the product label, please click here

To increase the fire protection of this product, we have devised a system to achive a Class 1 fire rating - see the test report by clicking here

To see our guide to fire testing please click here

Important Safety Information
 
Compliance with Building Regulations;
This product should not be used in isolation 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.
 
Fire Safety
When used in isolation this product is suitable as a localised ‘problem solver’ for cold external walls and is not recommended for use in fire escape routes or on ceilings.
Fire resistance can also be improved significantly by cross lining the surface with Wallrock Fireliner applied with Wallrock Fireliner FR Adhesive.
 
Preparation
Surfaces painted prior to 1960 may contain lead pigments and special precautions should be taken when preparing such surfaces.

  • R Value 0.05 m²K/W
  • U Value 20 W/m²K
  • For quick and easy heatsaving on inside walls.
  • Resists damp and mould formation on problem walls.
  • CFC free.
  • Use a good quality ready mixed adhesive suitable for polystyrene wallcoverings such as our Wallrock Thermal Liner Adhesive, or other good quality ready mixed adhesive suitable for polystyrene veneers.
  • Can be overhung with a decorative wallpaper.
  • Suitable for painting once a lining paper has been applied. We recommend covering with lining paper before painting for a smoother tougher surface.
  • Combats the build up of condensation.
  • Fire Rating: E

Single Length: 10m x 50cm coverage: 5m² approx

Applying Red Label Heatsaver Wall Underliner

  • 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 and therefore 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.

Adhesive
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.

This is a simple wallpaper calculator and should be used as a guide only. You can find the roll width and roll length you are after on the specific product page.
Roll widths are provided in meters (such as 0.5 x 10mtr) so your wall widths and heights should be inputted in meters also.
If you are purchasing an offset match product then you may need a little extra as there may be some waste. If you have any windows or doors in your walls you can simply ignore these. This will give a good estimate of required roll numbers.

Wallpaper Calculator