Joins on lining paper over thermal lining

Question

Hi, I’m confused because when I hang lining paper I can achieve a good finish, I very rarely see any joint and I can’t figure out why if I hang lining paper on graphite thermal wall lining which has a kind of paper on it, I have joint problems! When I paper over it I seal the paper on wall lining, then hang lining paper and it looks the same as it would on just plaster. It’s when I emulsion that I can’t understand because it shows every joint not as a gap but it’s as if the paint builds up on joints. I was thinking paint may be lifting joins but then none appear lifted when looking closely. 

Also, why would they lift if stuck with the same ready-mixed adhesive used for plastered walls and recommended for the thermal lining? Like I say there is no appearance of joint not stuck, just looks like a build-up of paint on the joint?

Nathan Philip · Accepted Answer

It sounds like you're experiencing a common issue with textured or embossed wallpaper, where the texture can make joints more visible after painting. This can be especially noticeable if the joints were not properly sealed before painting.

One potential solution is to use a paintable caulk to fill in the joints before painting. Apply the caulk to the joints, smooth it out with a damp cloth or your finger, and allow it to dry completely before painting. This will create a smoother surface and help prevent the paint from building up in the joints.

Another option is to use a textured paint or finish that can help disguise the joints. This can be a good choice if you prefer the look of textured walls or if the joints are particularly difficult to seal.

It's also important to ensure that you are using a high-quality paint and that you are applying it evenly. Uneven application can make joints more noticeable and can create a buildup of paint in certain areas.

In terms of the adhesive used to hang the thermal lining, it's important to use the recommended adhesive and to follow the manufacturer's instructions for application. If the adhesive was not applied properly or if the thermal lining was not installed correctly, this could also contribute to joint visibility after painting.

Overall, it's important to take your time with the installation and painting process, and to address any joint issues before painting to ensure a smooth and even finish

Jay · Answer

Hi Pete, I’ve had similar problems when hanging different types of paper, sometimes it can be that the paper has stretched when lining the paper together or sometimes it could do with shrinking. Sometimes pre-pasting the wall helps.  Also, in regards to using ready-made wallpaper paste, if I was you I would always make my own, hope this may help. Regards A&S Maintenance team.

Damian · Answer

If you are planning to hang lining paper or wallpaper on top of a thermal liner I strongly recommend that you use a non woven lining paper such as Wallrock Fibreliner. Traditional lining paper shrinks and expands when pasted and can cause lifting on the joints

Sjayy · Answer

It could be that it's getting wet as it will want to shrink as your papering over the paper and then painting over that wallpaper if you get what I mean

Rich · Answer

To help the seams stick you can use a primer, this will help reduce seams from lifting/splitting.

Joshua · Answer

First. Sand all the walls where you want to apply paper and then add the adhesive and apply the paper.
Thanks

Stefan · Answer

1. Prepare the Surface

Ensure the thermal lining is properly adhered and smooth. If it's not already smooth, fill any gaps or holes with filler and sand it down.

2. Cut Lining Paper to Size

Measure the height of the wall and cut the lining paper to the appropriate length. Allow for a little extra to handle the joins.

3. Position the First Sheet

Apply adhesive to the back of the lining paper using a paste brush or roller, and hang the paper, aligning the edge against the wall. Smooth out any bubbles or wrinkles using a wallpaper brush or smoother.

4. Overlap Joins Slightly

When applying the next sheet, overlap the join slightly (about 1-2 cm) to prevent any visible seams. The lining paper should slightly overlap the first sheet, then you can trim it down for a perfect fit after the adhesive dries.

5. Trim the Edges

Once the sheets are applied, use a sharp wallpaper knife to trim the excess at the top and bottom. Take care not to cut into the thermal lining beneath.

6. Seam Treatment

Seams where the lining papers meet can sometimes show through. To avoid this, you can lightly press the seam with a seam roller for a tight, invisible join.

For extra protection, you can apply a light coat of wallpaper adhesive over the seam area once it’s dry, then gently smooth it.

7. Allow to Dry

Let the paper dry completely. If necessary, lightly sand any bumps along the seam after drying to ensure a smooth finish.

Joins on lining paper over thermal lining

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