Simple Plastering Repairs

Plastering is more difficult than it looks, and attempting to plaster your own walls can often be a messy business. Getting surfaces level, and consistent is a skill which requires quite a bit of practice, which explains why plastering is a trade in itself. Often when performing home improvement, it is necessary to remove or damage plaster, and a basic repair is something which most people are capable of if they use the right techniques.

The first technique we will run through is called patch plastering. This is used when you have an an area of missing plaster on a wall or ceiling, and you need to make good (although if much of the old plaster is unstable, you are probably better to take it all off and have a professional re-plaster the wall). You should use undercoat plaster on a semi-porous surface, or bonding coat on a non-porous surface.

Simple Plastering Repairs

Start by brushing all loose debris out of the damaged area paying particular attention to the edges. Next you need to apply a coat of PVA solution (5:1 water to PVA) overlapping the surrounding wall. Now you should apply undercoat plaster to the area using a trowel, and smooth it to a level a little less than flat to the wall. Score the plaster in a criss-cross manner with the edge of the trowel and leave it to dry. Now you are ready to apply the finishing plaster – use a plastering trowel for this (the large rectangular type). Feather in the join with the surrounding wall, and then leave to dry. When it is dry, you can sand the plaster down so it is perfectly level with the wall. All done!

The second technique we will talk about is how to repair a small hole in a stud wall or ceiling. Start by trimming off the edges of the hole to make it neat and rectangular with a craft knife. You will need to cut a square of plasterboard a little bigger than the hole, and make a small hole it it in the middle which you thread a piece of string through and knot. Now apply PVA to the edge of the board, on the opposite side to the one the string is knotted on. Post the board through the hole diagonally, keeping hold of the string. Now pull the board into place – you can tie an off-cut of wood or a chair leg or something to the other end of the string and pull it tight to hold it in place while it dries. Remove the string when the repair is dry, and use filler to finish off. All done!

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