How to Thoroughly Prep Walls for Wallpaper

How to Thoroughly Prep Walls for WallpaperThe basis of success in all aspects of DIY home decorating is forward planning with careful preparation and this post illustrates that approach precisely.

The information in this article will guarantee you that success as you don't have to work out a method on how to do the job. This knowledge is especially useful if you are new to decorating and unfamiliar with the right tools and materials needed to carry out the job.

Clear step-by-step instructions in this post will guide you on how to thoroughly prep walls for wallpaper.

To help you plan your task of readying the walls for papering, the video below shows you how to set up your work area and organize your materials and tools for the job.

The advice is easy to understand and simple to apply. Anyone trying this for the first time will have no problems in achieving a satisfactory result.

Supplies Needed

Safety Glasses

Dust Sheets


Filler Knife


Dust Mask

Overalls & Gloves

Sugar Soap


Sponge & Cleaning Cloths

Plaster Sealant (If required)

Damp Sealant (If required)

Stain Block (If required)

Lining Paper (If required)

Step by Step Instructions

Clear your work area and use drop cloths or dust sheets to protect the floor and any fittings or furniture that could not be removed from the room.

At all times, make sure you wear protective clothing to shield your eyes and skin when using fillers and cleaners.

If the walls are finished in untreated plaster then you must apply a sealing agent before you begin any repairs to the surface. The agent will reduce the natural porosity of the plaster so that any wallpaper or paint adheres well.

Fill in all surface flaws such as cracks, splits and small cavities with a suitable filler. Some fillers are made for special purposes and you need to select one to suit the damage you are repairing.

Use a filler knife or spatula to apply the filler by driving the mixture into the damaged areas in firm single strokes.

Top Tip: Keeping your spreader wet with cold water will ensure a smoother finish that may not require further treatment.

If the repair is still uneven after the filler has dried, sandpaper the rough patches until level and smooth.

Larger damaged areas with loose plaster or deeper holes should be cleaned out and fresh plaster applied.

Lining paper or a complete plaster skim may be necessary for very rough wall surfaces.

Treat any stains or damp patches with an appropriate sealant to eliminate any unsightly marks showing through your wallpaper or paint.

Top Tip: Investigate the origins of any damp patches or stains to prevent further blemishes appearing later on after the decoration is finished.

Using sponges and cloths, clean the walls with a sugar soap solution to remove any grime, dust or grease spots.

Finally, wash down all walls with clean, fresh water to remove any sugar soap residue.

The procedures and tool handling demonstrated in this post are not difficult to put into practice - even for a newcomer to DIY.

By prepping any walls using these methods, you will be able to apply your wallpaper that much more easily because you have already removed any problem areas.
These tasks are not overly demanding. The finished wall preparation in itself will not only give you a good deal of satisfaction as a job well done, but also give you added confidence when looking to fix the wallpaper.

A big advantage of well prepared walls is that, when you have papered the room, the design of your wallpaper will be shown at its best.

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