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What plastering services we offer:
- Plaster boarding
- Float & set
- Artex covering
- Tiling works
- Internal & external work
- Sand & cement rendering
The key to applying plaster is to initially check whether the surface is made of porous, semi-porous or non-porous material as this can effect the plaster’s drying time and can, in porous walls, result in a lack of suction causing the plaster to fall off before being fully flattened and secured in place.
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Applying water to a porous background/wall is the simplest solution to controlling suction and you’ll know when you’ve added enough as the water will run off rather than being absorbed.
Backgrounds/walls that are slightly porous in nature won’t dry out your plaster however, they do have to be properly treated prior to applying the plaster. For instance painted surfaces are terrible for sticking plaster to and no amount of water will change this. Best advice if you don’t want to remove the paint before plastering is to coat the background in a PVA solution which can be purchased at most good trade and DIY retail outlets. After you’ve applied the PVA, as per brand instructions, you’ll be good to go.
If you want to know whether your background is porous or not then it’s necessary to do a quick suction test. This sort of test is very easy to do and involves applying a small amount of plaster to the wall, allowing it to dry for a few minutes before testing for moisture with your finger. If the plaster is still as wet as when it went on then the background is not porous and won’t require a soaking. However, if the plaster has dried out then you do have a porous background and the application of water or PVA is most definitely advisable.
Another top tip for wannabe plasterers is to use a sand based backing coat to give you more time and less stress when it comes to getting the job done right. This sort of sand, cement and plasticiser solution will set overnight which gives you all day to practise your new found craft without time constraints.
Finally, one of the best tricks of the trade is to apply an extremely thin layer of plaster first before adding a second coat when the initial layer is still moist. Top tip: make sure the first coat is applied with as much pressure as possible and you’ll ensure there’s less chance of the plaster falling off.
Of course, if you really want to take the stress, arm ache and sleepless nights out of plastering then best advice is to call in an expert because if you’re looking for a smooth, professional finish that will increase your property value then sometimes it really does pay to get things done right.
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