Insulating Lining Paper

Insulating Lining Paper

Or simply, 4 mm of polystyrene, which has been lined with 1200 grade lining paper. Yes, this means that the lining paper is already glued on top of the polystyrene at the factory and all you need to do is put it up on the wall and either paint it or use a wallpaper of your choosing on top of it. Of course, you can purchase polystyrene in rolls and lining paper separately, but this means you’ll have put the polystyrene on the wall first and then line it with lining paper. Twice the time and twice the risk.

Below is an image, which I’m hoping will give you a good idea about the thickness of the Insulating Lining Paper. The thickness of any wallcoverings is quite important as it will have bearing on the approach you need to take when working around the fittings such as light switches etc.

Insulating Lining Paper is 4 mm thick


You have to use a solvent free adhesive such as Wallrock Thermal Liner Adhesive. If you think you’d be saving yourself a few quid by using something else perhaps you need to rethink the whole job. Whilst I understand that everyone wants to get the job done as cost effectively as possible, you won’t be doing it when the Insulating Lining Paper starts coming off here and there and you have to start again.

Now, this is a very important part of the job. You can’t use the likes of Solvite All Purpose (or any other type similar to this) to stick the polystyrene to the wall. It’d be a bit like using Bostik Paper Glue to stick a brick to a wall. Perhaps slightly exaggerated, but not far from the truth. We’ll be talking to a wallcovering adhesive manufacturer soon to find out more about the art of adhesive making so, for now, take our word for it.

Insulation benefits

The manufacturer claims that 4 mm polystyrene has the same insulation effect as an 85 mm brick, 98 mm sandstone block and 262 mm concrete. We all know that polystyrene has been used as a insulating material for decades and it works.

Which way is up?

I think the image below explains everything you need to know when hanging the wallcovering on a wall. As with most wallcoverings, allow 24 hrs drying time. This will give you the time to spot any problems and fix them. Once you feel happy with the result you can emulsion paint it or use a wallpaper on top of it.

Two sides to Insulating Lining Paper


A small issue with using polystyrene backed wallcoverings is that once you dent the polystyrene it stays that way i.e. it won’t come back up to flat level. There’s no need to panic though. It’s not going to happen by just touching it. The dent below was made using a pencil and I had to apply a fair bit of pressure. Should it happen, just fill it in with a good quality filler.

Dent in the surface made with a pencil



  1. rodney

    ifitted insulated linning paper to wall. then i waited 24 hours before painting. almost immediatly wee ripples started appearing. then after another 24 hours the riplles shrunk tho they r still there and visible. what would i do to cure this

    • OnWall

      Hi Rodney,

      What does it look like now? Has it gone back to flat completely or is it still sticking out? It sounds like the moisture in the paint loosened the liner from the polystyrene, but we don’t hear of this issue too often and / or it typically flattens.


  2. I have finished lining the walls of my daughters room with wall underlined
    and now want to cover with her chosen wall paper, can I use the standard
    wall paper paste?

    • OnWall

      Hi. Yes, you can use standard wallpaper paste, but it’s best if you use ready-mixed paste as it’s much lower in PH. High PH in dry flakes wallpaper paste can cause problems with the liners on top of the insulating lining papers.


  3. Just completed room with lnsulated lining can I use normal paste to hang
    wallpaper over the lining paper

  4. Barbara

    I have bought 3 rolls of Heatsave wallpaper for one outside wall which is cold to the touch. How much adhesive do I need and does it have to be the special Walrock Thermal? A quick reply would be very much appreciated. Many thanks.

    • OnWall


      Where did you get it from, please? They should be able to advise on this at the point of purchase. We use and suggest Wallrock Thermal Liner Adhesive as this what the manufacturer’s suggest and should anything go wrong we can go back to them. For 3 rolls you’d need approx 8kg adhesive depending on the walls’ absorption.


  5. Shelley Lunga

    Hi I have recently applied graphite insulating lineer to my walls in my stairway and found out afterwards they my walls have already been insulated on the outside I believe you can’t insulate on both sides of a wall as this causes interstitial condensation so I’ve had to scrap th graphite off the wall The walls are now still covered with the dry, rough graphite glue How would you suggest I remove it? I thought about sanding but don’t know which grade of sandpaper to use Please could you advise?

    • OnWall

      Hi Shelley,

      I’m not an expert in interstitial condensation, but I believe this occurs when the warm air gets inside of the wall’s structure and based on the fact that you have insulated it from both sides, this might be difficult. Again, I’m not an expert and don’t know your situation.

      I assume you are referring to Wallrock Thermal Liner Adhesive here. If that’s the case, I’d suggest that you tried a wallpaper steamer first instead of sanding it down. This is a water based adhesive paste and should come off. Please let us know how you get on.


  6. Hi, sorry to resurrect such an old post but going to be applying some graphite thermal liner similar stuff to what is in the post. Wondering if possible (using wallrock thermal liner paste) to put up 2 layers of the thermal liner? Of course giving the required drying time and off setting where the joints are. Or another option of 4mm liner then 2mm liner?

    Many thanks

    • OnWall

      Hi Paul,

      You can hang double layers of Graphite Insulating Lining Paper; however, I’d suggest that the first layer is without the lining / lamination on top. You mentioned that you are using ‘similar’ product so I presume it’s not the same i.e. with a liner on top. This is to stop any potential problems with de-lamination of the liner. Most likely it shouldn’t happen, but just being cautious.


  7. used andertons damp proof paper having joints open up particuly around fire breast

    • OnWall

      Hi Mark,

      What’s the question, please? I don’t particularly like this product for a number of reasons. How hot does the fire breast get? This could be one of the reasons why it’s opened up.


  8. Hi there. My flat has this lining paper underneath some wallapaper we want to remove. Is it possible to scrape the wallpaper off this insulated lining paper, to then put some some new lining paper ontop before painting?


    • OnWall


      In theory this should be possible, but it depends on how well it’s stuck and if it’s 4mm or 2mm thickness – the latter may fall apart whilst you are trying to take off the wallpaper. You’d need to use wallpaper steamer to steam it off slowly – less scraping and more peeling off will be needed. Another thing which you need to check is if there’s a liner on top of the insulating lining paper or is it just polystyrene with wallpaper on top of it. It doesn’t really impact the whole job apart from the fact that if there’s a liner on top of the ILP the liner will come off as well. Once the walllpaper (and potentially the liner) are off, please check if the ILP is stuck properly to the wall. If I were you, I’d use Wallrock Fibreliner or at least Paste-the-Wall lining paper instead of traditional lining paper as these stick to polystyrene much better (use suggested wallpaper adhesive paste). Hope this helps.


    • Hi, thanks for getting back so quickly. It’s 4mm polystyrene with a liner on top, with the wallpaper on top of that. So from what you say it shouldn’t be too big a job and if the liner comes off when steaming then just reaffix and use the wallrock fibreliner on top.


    • OnWall

      It’s more of a fiddly job than a difficult one – obviously be prepared for some unexpected twists as they always come up. If you need any samples of Wallrock Fibreliner, please let us know.


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