Generally, walls with this material are located inside the house. The cracks that can damage them are usually superficial. Fortunately, cracking can be stopped with DIY skills and the right tools. You will need a paintbrush, a scraper, a putty knife, sandpaper and a putty cartridge. The first step is to widen the hole with the scraper. Then use the brush to clean out the plaster residue and sand the sides with the inside of the crack. It is now time to use the putty to fill the latter and wait for it to dry. Use sandpaper to smooth the wall or ceiling. For a more aesthetic appearance, it should be repainted in white or in the colour of your choice. Magic, isn’t it?
My wall is concrete: how do I fix it?
This more fragile wall material requires more extensive repair work. If the crack is superficial and shallow, you can plug the hole in the wall by equipping yourself with the essential tools for this action. Filler, which you can easily find in DIY shops, can seal the gap and make it disappear if the width is not too wide. The smoothing or finishing coat smoothes the wall before painting or wallpapering it. To make it easier, you can use a spatula. It is important to respect the drying time indicated on the packaging.
What types of coating are available?
There are several types of coatings available on the market to effectively seal a crack in a wall. When a wall starts to crack, you can choose either powder or paste. The former is suitable for larger cracks, while the latter has the advantage of a longer shelf life and is ready to use. On the other hand, it acts against surface cracks sporadically. If you have a powder coating, read the packaging carefully to find out how much water to mix this DIY product with. It will then need to be poured into a medium bowl so that it can be mixed. The preparation should be smooth and homogeneous. The final touch is to work the spatula into this liquid and seal the crack. Remove the excess with the tool and just let it dry. When your coating is ready to use, it will be easier to repair the crack opening. Whether vertical or horizontal, these holes should be filled with the coating that requires no prior preparation. Apply this clay product on a spatula and spread it over a surface that overlaps the cracks. Make sure that the liquid fills the latter by passing the tool over it several times. When dry, it will be necessary to sand to remove the residue and allow time for the paste to dry. After these actions, the wall will be sealed again and the potential damage of the small crack will be eliminated!
How to finish after filling?
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