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How to Fix Damaged Wallpaper?

Wallpaper is a commonly seen at home for decoration material. As it has a good visual effect and it is easy to hang, therefore, many people like having it for wall decoration. However, as time goes, problems such as bumps, and other damages will appear. How to fix the damaged wallpaper? In this article, we will show you different solutions to tackle the wallpaper problems.

Wallpaper bubbles

If there are bubbles on the wall, it is caused by uneven glue on the wall surface. You can use a needle to pinch the bubble on the wallpaper surface to release the air. Then take an appropriate amount of glue into the needle eye position to stick the wallpaper tightly. Use a book to flatten the bubble area and let it dry naturally.

Curling wallpaper seams

Curling wallpaper seams is caused by thermal expansion and contraction due to changes in weather temperature and humidity. Generally, you only need to use the wallpaper paste to paste the curled wallpaper again and flatten it with a book.


High humidity and poor ventilation in the room can cause mould to grow on the wallpaper. Wipe the wall with a dry cloth, and then use bleach or diluted wallpaper cleaner to remove the mould.

Damaged wallpaper

Wallpaper damages commonly occur. Most of the case is caused by scratches with hard objects. Small area damage can be repaired with glue. If the damaged area is large, it is recommended to paste a new piece of wallpaper.

Wallpaper becomes yellow and brown

If you hand the wallpaper when the wall plaster is not completely dry, the alkaline substances in the wall plaster will cause a chemical reaction with the wallpaper, making the wallpaper surface becomes yellowish. This situation is a bit difficult to handle. You need to remove the entire wallpaper and replace with a new one. If this problem occurs after a few years of living, it is mostly caused by natural ageing due to exposure to sunlight and air. You can wipe it with a bleach towel. Wait for half an hour and then wipe it with water again. It is suggested having a patch test before doing the whole piece of wallpaper.

HKDecoman, now going global as Deco-Man, is a Hong Kong-based renovation platform which provides professional consultancy services and pioneers in the development of A.I. homeowner-engineer matching. We aim at educating the public about the art of home renovation and have our eyes on transforming the traditional renovation industry, bringing standardisation, transparency, convenience and automation to the business.


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