Sealing Plaster Walls For Tiling

Thoroughly vacuum the area and give the wall a once over with a damp sponge or cleaning cloth.

Sealing plaster walls for tiling.

Plaster is a weak material compared to brick and cement. 1 paint over area with watered down matt emulsion 40 water 60 paint 2 cover area with watered down pva glue. Tiling onto plasterboard walls 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. Concrete plywood drywall or painted surfaces tiling requires appropriate preparation.

Make a mark on the wall with your starting point. Sand with a medium grit sandpaper to create a uniform surface that s not too smooth. 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. You should allow the new plaster to dry for 4weeks prior to tiling but this will depend on thickness of plaster and temp of room.

Fresh plaster takes up to 30 days to dry and wooden surfaces can use a layer of polyurethane paint. It should be a minimum 12 5mm thick when fixed to timber framing or battening and fixed in accordance with the manufacturers recommendations. Bear in mind that raw brick blockwork and cement are mostly uneven. What is the best option to prepare newly plastered walls for tiling.

Seal the walls with a skim coat and let it dry thoroughly. Ideally the wet areas should be tanked you can tile straight onto the plaster unless the surface is highly polished then it should be brushed with a stiff brush and primed with something like bal apd or dilute sbr.