Plaster does not stick to any surface so make sure your surface is ready to get plastered otherwise bits could fall away in time. Make sure it is clean – remove bits of existing plaster, dust or wallpaper. It is also very vital to make sure that the suction of the wall is right, high suction can cause the moisture to be sucked from the plaster meaning it will dry too quickly, This may mean you have to wet the wall before doing the job. Once water starts running down the wall from a spray bottle it is ready. If there is low suction there also need to be work done before you can apply the plaster, a recommened way of doing this is to add PVA mixture that lets there be a rougher texture for better adhesion.
When you are working make sure that you keep things clean as you go, having clean equipment ensures that your plaster doesnt go off, it also very hard to remove dry plaster from tools. Also always add plaster to water and not the other way round. The two mix together roughly half and half, plaster must be applied when it is feeling tacky but not too wet, this helps it bond to the surface well. Beginners should start on a small area first to ensure they’re getting the technique right. The first area you do should be an area that takes only about 30 minutes to do first coat.
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