Qi Family Classroom: Wall Treatment Before Wallpaper Construction

Links: This site friend wall paint construction record

According to the actual operating experience, a sentence is summed up: As long as the wall is basically no dust, there is no leakage. In general, a varnish can be applied directly.

1. Apply the varnish up to two times over the wall to protect the wall and protect it from moisture. After drying, lightly sand it again with sandpaper. Do not brush more oil, this will cause the wall surface to be too smooth, resulting in the wallpaper is not firmly paste and shrink in the drying process to produce joints!

2, wallpaper base film: The purpose of the base film is to cure and protect the surface of putty, but also to strengthen the bottom wall waterproof, anti-mildew function, but to wait for putty completely dry before brushing. (The base film is an environmentally friendly product that has no pungent odor and is easy to dry and is a substitute for traditional varnish). The main feature of the base film is dry fast. Basically, it can be used for wallpaper construction after brushing the base film for 15-30 minutes. It works well when the project is in a hurry and modified for environmental considerations.

Special attention: from the perspective of wallpaper replacement, the use of varnish in the curing putty, moisture, mildew effect is stronger than the base film, the general home improvement if you consider a year or two need to be replaced, and the decoration time allows the best use of varnish.

Wallpaper construction is the most important part of the entire construction process. Wallpaper construction has an important impact on the overall wallpaper posting effect. Regardless of how your wall is now, you can paste wallpaper after processing. The specific requirements are as follows:

1. The wall surface treatment must be smooth and clean. The wall surface has bumps or cracks, which are removed with a shovel and smoothed with a putty, dried and then sanded.

Cement, brick wall: It is relatively flat, flattened with putty, brushed with a thin varnish (or wallpaper base film) can be wallpapered.

Gypsum board, splint, and blockboard: There are joints, so the first joint repair and then approved.

It is best to use a large amount of old powder and a small amount of cooked rubber powder to treat the large area of ​​the wall surface, so that the wall surface is more firm and sand-grinding; if a small area, such as tacking, more white glue (vinyl acetate resin) can be added to make the joints strong Will not crack.

Powder wall: that is, there is a loose powder on the wall surface, sanding should be removed, leveling, brushing wallpaper base film (can be used instead of varnish) can paste wallpaper.

Light wall: The wall surface is very smooth (such as a painted wall surface), it is not easy to absorb glue, it is not easy to dry, and then the force will drop, so you have to sand it before sticking wallpaper.

The paint wall is very suitable for changing the wallpaper, but it is necessary to do a good job after the sanding and painting the wallpaper base film (can be replaced with varnish) before construction. The wall surface pretreatment of the wallpaper is actually the same as the wall pretreatment of the brush coating.

2. If the wall is exposed to excessive moisture, it is best to use fungicides for special treatment to eliminate mold.

3. If the side of the wall is a bathroom, the interior wall of the bathroom must be specially treated with a water repellent. Otherwise, the wall will be exposed to moisture for a long time and the wallpaper glue will fail.

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