DIY How To

Tiling Preperation

DIY Projects - Preparing the wall

To achieve great looking results requires careful planning and preparation. Start by making sure the surface to be tiled is suitable.

Wallpaper - Not suitable, strip the wallpaper and prepare the walls as below.

Brick and Concrete - Scrub the surface to remove any loose material, fill any holes to give an even surface.

Paint - If the paint is sound then wash down with sugar soap, if the paint is flaky rub down and size the walls, using a PVA adhesive mixed one part PVA to five parts water and allow to dry before tiling.

TipScore the painted surface of the wall with the edge of a scraper to help the adhesive stick to the walls.

Plaster - Allow new plaster to dry out for at least a month before tiling. Size all bare plaster using a PVA adhesive mixed one part PVA to five parts water and allow to dry before tiling.

Plasterboard - Treat the same as new plaster and size walls as above.

Old Tiles - These are a good surface to tile over, remove any loose tiles and use a filler to level the surface. Wash down with sugar soap.

Wood - Make sure any wood panels are at least 12mm (1/2") thick and paint all bare wood with an oil based primer and allow to dry.


DIY Projects - Preparing the Floor


Floor tiles need to be laid on a clean, dry, level surface. If the floor has any distortions the tiles may crack when walked on. To achieve great looking results requires careful planning and preparation. Start by making sure the surface to be tiled is suitable.

Concrete - Solid concrete floors are ideal for floor tiles, the concrete must be dry, clean and flat. If the floor is damp lay a damp proof membrane and screed. Fill any large holes or imperfections with a mortar mix of three parts sand to one part cement and level. If there are any raised nibs, chisel these flat.

Old Tiles - Tiles are an ideal surface to tile over as they should be nice and flat. If any tiles are loose or cracked either re-fix securely or remove and fill the hole with a mortar mix or self levelling compound.

Timber floors - Floor grade chipboard - Tiles can be layed directly onto this surface provided the floor is flat. Fill any joints between the boards with a filler and replace any damaged boards.

Timber floors - Floor boards - Do not tile directly onto floor boards as the floor will move and crack the tile or joints. Cover the floor boards with sheets of plywood 12mm (1/2") thick and secure with countersunk screws, this will prevent the floor moving and the tiles cracking. If the area is in a bathroom or likely to get wet then use exterior grade plywood.

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