This master class describes the techniques of professional decorators when wallpapering. You will learn how to properly prepare walls and moldings for the finishing stage. The article provides step-by-step photos of the process of sticker and trimming of heavy vinyl wallpaper on a non-woven base.
Preparing the walls
Particular attention should be paid to priming the walls. The selected wallpaper is considered “heavy”, so every effort must be made to ensure the best possible grip on the wall. This is achieved by using deeply penetrating primers such as ST-17. Since gypsum putty is considered highly absorbent, preparation should be carried out in two stages:
- Coating with ST-17 primer. The room must have ventilation.
- 12-24 hours after the primer has completely dried, the wall should be covered with wallpaper glue, at a concentration three times less than for the sticker. After that, keep for another 12-24 hours.
The wall prepared in this way will acquire the maximum possible adhesion to the canvas..
Stucco painting (baguette)
Before gluing the wallpaper, the stucco molding must be painted. If the ceiling is made of KGL, the stucco molding is painted along with it.
If the ceiling is stretched, a folded sheet of paper is inserted between the curb and the canvas.
Then paint the element separately.
This is necessary in order not to stain the canvas with paint..
Non-woven vinyl wallpaper is glued without impregnating the canvas. Impregnation is unacceptable, because after drying, the swollen fibers contract, and the canvas shrinks, gaps may appear at the joints.
The first sheet requires careful fitting. Set aside the width of the sheet from the corner and draw a guide line along the level.
The first sheet will be attached to it, which will serve as a beacon for subsequent ones. Professionals sometimes use an axis builder or a laser level (usually at high volumes).
Then you need to cut the sheet lengthwise and roughly cut the shape of the top, projections, if any. Stock – 40-50 mm.
Coat with glue prepared according to the instructions.
Attention! Non-woven wallpaper canvas must not be covered with glue.
Smear the joints with the stucco molding gently with a small brush.
Attach the canvas along the markings and push it with a wallpaper spatula towards the abutments.
A dry overlap should be obtained on the upper abutment.
This abutment should be pressed especially carefully, but without stretching, and cut off the excess part of the canvas in place.
Attention! After trimming, there should be a margin of 40-50 mm.
The next sheet goes end-to-end to the first, without a gap and backing.
Smoothing problems may occur while sticking the canvas – wrinkles, wrinkles, bubbles. In this case, the canvas must be removed and applied again, adding glue to the wall if necessary..
It should be noted that the manufacturer strongly recommends reinforcing the joints of “heavy” wallpaper with a special joint glue such as KLEO Strong or an analogue. Therefore, following the recommendations, we glue the joint additionally. The joints of the sheets are rolled with a special roller until the top is trimmed..
The quality of the joint is checked by touch and visually.
To trim the top of the sheet to the stucco molding, you need to bring the canvas with a spatula exactly to the corner and press firmly. Then go along the spatula blade.
Cutting in this way will be close to the factory quality. In the same way, you can cut wall joints, external and internal corners..
Final wall view:
Five tips for working with heavy wallpaper:
- Don’t skimp on glue. Buying cheap glue for expensive wallpaper puts the whole event at risk. Make sure that the glue matches the selected type of wallpaper (in terms of density), not according to the seller’s words, but according to the marking on the package.
- Spare no glue for the base primer. Primer costs are negligible compared to repairing a peeling wall after a year or two or with a drop in humidity.
- Do not cut the sheets exactly to size beforehand. Correctly cut the wallpaper only in place.
- Start work only in a balanced state. Finishing stages of finishing do not forgive mistakes and nerves. Drafts in a room with damp wallpaper are unacceptable.
- Pay attention when choosing wallpaper at the drawing step. If it is large – from 50 to 1200 mm, then when pasting rooms with low ceilings, you will get a lot of large scraps. This is especially true for heavy wallpapers, since their price is an order of magnitude higher than others..
Finishing stages of finishing are the quintessence of all work on the repair of the premises and interior decoration. Performing the final stage with his own hands, the home craftsman takes full responsibility for the result. Plaster, putty, leveling of walls can be done and redone many times, but wallpaper does not forgive mistakes – a “full hand” is more important here than all other factors. Therefore, if wallpaper is “more expensive” purchased for a significant amount for the budget, seek help from professional painters “upholstery”.