Render is an all-over coating made up of a mix of cement, lime and plasterer's sand. An area of damaged render can be easily repaired and should be applied in two coats.
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Use a cold chisel and club hammer to remove any loose render from the damaged area. Then brush away any loose debris and dust from the area.
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Apply a PVA solution (one part PVA and five parts water) to the brickwork to help the new render stick.
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Although ready-mix render is available, it is quite easy to mix a small amount for repairs using one part cement, one part lime and six parts sand. Slowly add water so that the consistency is such that it remains sticking to the trowel when it's turned upside-down.
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Apply the first coat of render to the damaged area using a gauging trowel, pushing it firmly into the hole. The level of the render should be slightly lower than the wall surface.
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When the first coat has dried, score it with a nail or the edge of the trowel to create a key for the second coat.
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Apply the second coat, tying the edges in with the surrounding wall.
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Apply the first coat of render using a gauging trowel, pushing it firmly into the hole at a level slightly lower than the wall surface.
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