Everything you need to know about Wallrock KV600 Thermal Liner

by Henry Campbell

Everything you need to know about Wallrock KV600 Thermal Liner

Why should you insulate your walls?

Around 35% of heat in the home is lost through the walls. It is the single largest area of heat loss and so insulating it can not only increase comfort but also save you money. While you can go to the lengths of solid wall insulation and install 100mm of EPS on the external walls of your property, it may not be financially or aesthetically possible. Therefore you may choose something like the KV600, which is a thermal liner designed to increase the thermal efficiency of the walls.

What is wallrock KV600 thermal liner made of?

The Wallrock KV600 thermal liner is basically thick wallpaper, which when applied to the walls of a room helps maintain the temperature a slow heat loss through the walls. It is made up from wood fibres and interwoven durable textile fibres. This not only provides the thermal liner with the strength to last, but also gives it the insulating properties that make it such a popular energy efficient product.

Is Wallrock thermal liner easy to install?

One of the best things about the wallrock KV600 thermal liner is the ease of which it is placed on the walls, and using the thermal liner adhesive you wont have to worry about it peeling off anytime soon. The 4mm think thermal liner can be cut fairly easily and attached on any wall, sloping or vertical. One important thing to note is that when installing on corners, you must cut it. This makes sure that the install lasts and fits snuggly into all areas.

What can you put on thermal liner & what can thermal liner go on?

We often get asked what materials you can put the wallrock thermal liner KV600 on top of and what can you put on top of the thermal liner. As the KV600 is 4mm thick, it does carry quite a lot of weight when compared to standard domestic wallpaper. Therefore, when applying it we recommend that you strip any original wallpaper from the walls to give the thermal liner the strongest bond possible to the wall.

Can you put thermal liner on mouldy walls?

For extra longevity and protection against mould, we also recommend using Ansilver – and anti mould product, prior to install. Once installed, you can then paint the thermal liner to your desired finish. However, due to the uneven and unstable nature of standard wallpaper we do not recommend applying traditional wallpapers on top. If you wish to get a smoother finish on your thermal liner, you can apply a layer of wallrock fibreliner to give it additional strength and a perfect finish with which to paint over the top.

The benefits of thermal liner, KV600.

It obviously doesn’t have the same energy savings as 100mm of internal, or external, insulation. However, at only 4mm thick, it’s perfect for those rooms where space is a premium. The comfort is increased and it certainly takes the edge off colder rooms. The price is also a significant plus side, as you can insulate whole rooms for a fraction of the cost of other insulation techniques.

How to install thermal liner – Wallrock KV600

Required: Wallrock Thermal Liner, scissors or Stanley knife, roller/brush, wallpaper smoother and plumb bob/line and a pencil.

Make sure that the surface of your walls are clean and don’t have any loose traditional wallpaper or chipped paint. If the walls are mouldy, make sure you prepare it with an anti mould product.

Applying the Wallrock Thermal Liner

    • Mark even lines using the plumb bob, ensuring that your Wallrock is applied as vertically as possible.
    • Apply Wallrock Thermal Liner adhesive to the wall liberally, using a roller or brush. Be sure to use around 6kg per roll of KV600. The rougher the surface, the more adhesive that is required.
    • Put the wallrock thermal liner on the wall with the fluffy side down, cutting either a length each time or hanging it directly from the roll.
    • Make sure excess thermal liner is cut with the scissors or stanley knife but ensure you don’t trim too much off!
    • Try not to overlap the lengths of wallrock thermal liner, when you add new sections lay them tight next to each other. Using a sponge and water, remove any excess adhesive.
    • Give the walls about 24 hours of drying naturally, without turning the heating system on the room.
    • After 24 hours, you can then paint on top of the thermal liner or alternatively apply fibreliner for a perfect finish or simply standard wallpaper to cover the Wallrock*. Ensure any small gaps are filled with flexible, non-shrinking filler.

*Note that wallpaper used should be ‘paste-to-wall’ or ‘non-woven paper’. Otherwise thermal expansion may cause buckling or folding of the paper.

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