Tiling On Heavy Gypsum Plaster Wall

Laying of tiles on gypsum plaster is carried out in 7 14 days.

Tiling on heavy gypsum plaster wall.

You may tile over existing tile painted or unpainted drywall plaster and textured walls. Tiling onto plasterboard walls. Fresh plaster whether applied as a patch or to the entire wall must dry completely before tile is applied. The primary hardening of the tile adhesive takes 1 2 days and the full up to 7 days.

Preparation for tiling onto plasterboard plasterboard should be dry securely fixed and rigid with no protruding fixings with the face to receive decorative finishes exposed. The adhesive and tile will block moisture from evaporating. Recommended thickness of the board is at least 12 5 mm. Make sure that gypsum board plaster board is strong enough to support the load from tiles and adhesive.

Expected load for tiling onto gypsum board should not exceed 32 kg m2. If you have a tiling job to do in your bathroom and the walls have been skimmed with plaster you have to follow a few guidelines when installing tile to make sure you do not have a failure resulting in all the tiles coming off the wall. Apply the last layer of skim coat and use a medium sized sandpaper to achieve a rough texture. It should be a minimum 12 5mm thick when fixed to timber framing or battening and fixed in accordance with the manufacturers recommendations.

It is believed that the cement sand mortar dries at a speed of 1 cm in 7 days. Once it s ready for tiling there is no need to tape the joints. You should not tile over wallpaper glossy surfaces lead paint or plywood. Holes or cracked plaster requires patching.

Don t try to use the tile setting adhesive or drywall joint compound to patch plaster walls. It is needed for the adhesive to bond well. Tiling over damp plaster causes the wall to fail because the plaster won t become strong if it can t dry out. When applying tile to a plastered surface it is important not to overload the weight of what the plaster will take before failure occurs plaster will support about 20kg m2 or about a 9mm thickness of ceramic tile.

However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight. If you re not sure if you have lead paint test kits are available. Tiling onto plaster backgrounds plaster is a weak material compared to brick and cement. The drying time is also affected by the thickness of the plaster layer.