Once you have completed all the filling and ensured that all edges are fully feathered leaving no hard edges and also that all joints are fully filled with no visible depressions you now finally get to the decorating stage. Once the second coat is dry you can then wallpaper the surface as you would a normal wall. eval(ez_write_tag([[580,400],'diydoctor_org_uk-under_second_paragraph','ezslot_15',691,'0','0']));By taking your time and using the correct products you can get a finish that is as flat and smooth as a freshly plastered wall without the expense of actually having to plaster it. As the name suggests the edges are slightly tapered or bevelled so that when the boards are butted up together there is a slight depression where they meet. We work with the industries best to ensure that we recommend only reliable and trustworthy tradesmen. Ideal for making a bad situation much worse. Depending on which type of wallpaper you have, these surfaces can take a little more work as you need to make sure you remove all the wallpaper. If you can, take as much furniture as possible out of the room, or place in the centre of the room and cover with protective sheets. However if the plasterboard is old or you are concerned for any other reason -then applying PVA will not cause any problems. Instead of using a sizing solution you can also use diluted PVA as a form of “mist coat”. Wallpaper which is hung by pasting the wall can be peeled off, with no soak time or tools required. I bet you’re thinking what the hell is a mist coat? Repeat this process until all paper is removed. We’re going to show you exactly what to do and how to do it. Once the second coat has dried the third and final coat is then applied but this time the 300mm jointing knife is used. There have never been so many different options for painting your walls. If your paint is in good condition, then the main thing you need to do to prepare for your professional to plaster over paint is clean. All you need to do, is apply a primer and undercoat with a roller to create the best surface. Before getting it on the wall give the first two coats a light sand over using a fine grit sand paper and then wipe everything over with a slightly damp cloth to remove the dust. Thank you for shopping with us. Begin at the bottom of your wall and place the steamer over the wallpaper until it appears damp. Once both coats have been applied and have fully dried you can then add your finishing coats or top coats. Mcphersons eclipse is best. You're ready to begin painting, but first you must apply polyvinyl acetate (PVA), a primer that seals the drywall. When sanding over the edges and screw holes ensure you feather them in to the surface of the board removing any “hard edges” as once you get paint on, edges like this will stand out a mile off.eval(ez_write_tag([[300,250],'diydoctor_org_uk-incontent_5','ezslot_22',688,'0','0'])); As you sand be extremely careful not to actually abrade the surface of the board. Steel angle bead fixed to external corner. Soak the paper with the solution, leave for a little while and strip off with the knife. Home > DIY How To Projects and Tutorial Guides > Decorating Plasterboard and Filling Plasterboard Joints(adsbygoogle = window.adsbygoogle || []).push({}); In this DIY project you will learn how to correctly fill plasterboard joints if you are intending to decorate straight over plaster boards without plastering them first. Also if the plaster has been polished and is very smooth give it a quick light sanding will help any paint to stick well. This ensures that the filler is forced down into the joint and on to the board. Before you use those, however, you need to secure the drywall and also mud with primer. What you’ll need. You could also try a steam stripper, fill the tank with water and when it’s plugged in and switched on, it pushes steam through the pipe. It’s worth spending a little extra time and care over prepping your walls before you paint, as you’ll get a much better finish. Sometimes it may even take up to a month for the fresh plaster to … Further normal coats will cling to this nicely. This time use your 200mm jointing knife to get the filler on the wall, ensuring that you leave roughly a 1 inch either side of the first coat. Second and final filling coat applied to internal plasterboard corner. Ensure the screws have been driven in just enough so they break the surface of the paper, don’t screw too far as this will crush the plaster and prevent a secure fix. If you don’t prime the surface with sealer, the plaster will soak up any paint like a sponge, so you’ll waste a lot and end up doing more coats than you’ll need. Similarly, you may ask, do I need to PVA plasterboard before tiling? If you paint over fresh drywall with regular wall paint, you'll have a hard time getting an even finish. Plaster is not ideally the best surface especially in a bathroom as moisture and water can get in causing failure. Once the final second coat has fully dried, use a finer grit sandpaper, around 120 grit or more to sand back flat taking care not to rough up and damage the surface of the plasterboard. Mix a 50/50 PVA and water mix and then brush this over all plasterboard surfaces and allow to dry and then add a second coat. All project content written and produced by Mike Edwards, founder of DIY Doctor and industry expert in building technology. Use a new piece of sandpaper and lightly sand the walls. Thank you for shopping with us. Using the 150mm jointing knife, apply joint filler to both sides of the corner making sure you get the filler right into the corner itself and then smooth it out towards the edges. With all the joints fully covered the final filling job is to now fill over any screw or fixing holes. Instead of using a sizing solution you can also use diluted PVA as a form of “mist coat”. Additionally three coats of filler will also be used to provide as much protection as possible. As you run the knife and filler down over the joint, hold the knife at an angle of around 20-25° as you run it over the joint. Tikkurilla sell a primer for new plaster. As before, once the second coat is on, run the jointing knife over each edge to feather it in and also remove any over spill. The plasterboard does not need to have any PVA applied – you are fine to just apply the plaster direct. Plasterboard takes on average 2-3 days to dry when plastered, whereas backing plaster takes 4-6 days. 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