Plaster over bathroom tiles DIY

Written by billy mccarley | 13/05/2017
Plaster over bathroom tiles DIY
Plaster won't stick to slippy tiles. (vittavat-a/iStock/Getty Images)

Many of you have unsightly tile in your bathroom. You may have spent part of your days wondering what can be done about that repugnant decor. The mess of tearing them out and starting over will be too great, but the good news is that you can cover those tiles with plaster. But you can't just wipe plaster over the top. Doing so would result in flaking plaster that wouldn't last a week. The slick tile surface will not allow the plaster to bond. With a few innovative ideas, you can cover that tile with confidence.

Diamond lath

Diamond lath comes in metal sheets 6 mm (1/4 inch) thick, 90 cm (36 inches) wide, and 1.5 m (5 feet) long -- sizes may vary. The mesh composition of this material will serve as teeth and lock in plaster applied to its surface. Install the diamond mesh directly over your tile surface. Use 7.5 cm (3 inch) galvanised screws, and screw directly through the mesh and into the wall framing behind the tile. Use a stud finer to find the wall studs, and mark them with a pencil or marker. You may need to drill holes into the tiles to penetrate the surface with the screws. Tighten the screws so that they sink into the mesh and create a crater; this will keep the screw head from being exposed. Space the screws 40 cm (16 inches) apart -- up and down the wall. Once the diamond mesh is completely attached, begin plastering.

Apply a scratch coat or base coat before you install the plaster. Find plastering products from most any hardware shop, usually in the plasterboard section. Wipe on the coat so that no wire is showing after the application. You may need to apply several coats of base coat to hide the wire. If so, allow each coat to dry before continuing. Follow the product instructions for mixing directions and drying time. Once the base coat has been completed, use a comb or stiff bristled brush to sweep fine lines in the base coat. This will help lock in the finish coat once it is applied. After the finish coat has been installed, check for lumps or voids; if they exist, sand the final coat smooth.

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