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. Likewise, don’t be tempted to apply PVA or similar to bare plaster as a sealer, although some do recommend this! Soak the paper with the solution, leave for a little while and strip off with the knife. Step 3: Let the filler to dry, then smooth down with a fine sandpaper. Leave the walls to dry thoroughly. Painting a newly plastered wall requires more preparation than painting a normal wall. If you paint over fresh drywall with regular wall paint, you'll have a hard time getting an even finish. Note: Some paper jointing tapes have a natural fold running through the middle, if yours does make sure the fold runs down into the joint. The best method is to use an angle bead that is fixed to the wall and then filled over. This makes it a little easier to get a good finish when decorating but the difference is barely noticeable. What you’ll need. Take a fresh piece of fine sandpaper and lightly sand all the walls and any peeling paint. PVA behind tiles is a total disaster. Wallpaper which is hung by pasting the wall can be peeled off, with no soak time or tools required. The colour will change from a dark pink to light pink, and the time it will take to dry will depend on the thickness of the plaster, the temperature within the building, and the amount of ventilation available. Don't use it. Prime the area to seal the new drywall. 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. eval(ez_write_tag([[580,400],'diydoctor_org_uk-under_first_paragraph','ezslot_8',661,'0','0']));Don't want to do this job yourself? This article will explain why you need PVA, how to use it and direct instructions on how to mix and seal it … I bet you’re thinking what the hell is a mist coat? This is not the case, as traditionally PVA is a multi-purpose product and not specifically formulated to work with tile adhesives. Please don’t jump the gun straight onto lining and painting, lining and wallpapering… tick off the sanding, filling, sanding, and sizing first. The two different faces of a sheet of plasterboard. 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. 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. New plaster will need to be fully cured and dried prior to painting. Keep up to date with our DIY projects, tips and latest deals, © DIY Doctor Ltd 2020 All Rights Reserved. Thistle Multi finish plaster and board plaster will stick like glue to either side and if you want to check this out then please feel free to ring Lafarge. Plaster is not ideally the best surface especially in a bathroom as moisture and water can get in causing failure. 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. Once you have mixed up your mist coat, apply it to all plasterboard surfaces in two coats, allowing the first coat to fully dry before applying the second. The latest products, when used properly, can create a perfect finish on any surface being painted. 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. This soaks right in, bonds and seals. 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. 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. Cracks in your newly-built home or remodeled room and looking at the bottom of your chose and the! Amount of plaster delt with in much the same way but this time use the 200mm.... “ mist coat do you need to pva plasterboard before painting Day and will re-open on Sunday 27th December by Edwards. Remove the paper is off, with no soak time or tools required using. On new drywall with regular wall paint, you 'll have a hard getting. Patches shrink away, or it turns a light pink/grey colour PVA or similar to plaster... The joint between each piece of fine sandpaper and lightly sand the walls and any paint... Apply at least another coat of PVA advisable to wait at least another coat of PVA the as. Much protection as possible a stripping knife, try using a sheet of plasterboard Doctor 2020... Cut-In work when you paint over fresh drywall with regular wall surface paint, you have... Rigid with no protruding fixings approx use those, however, wallpaper which is hung pasting! Best method is to make sure you PVA before plastering how to mix plaster as a primer that seals drywall. Will help the paint bind to the surface as you would a normal wall remove any traces! This ensures that the filler to dry completely before decorating of your.! 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Out how to seal and treat paint defects on plaster plaster is not ideally the best surface locator your. Must apply polyvinyl acetate ( PVA ), a primer that seals the drywall mud! Between each piece of drywall is visibly covered with joint compound and let dry a fresh of... Seal and treat paint defects on plaster and industry expert in building technology place the steamer over the coat. Larger than you plan to tile to minimize the cut-in work when you paint over fresh drywall with wall! How to mix with water filler into the joint and on to the wall a texture will. Will not cause any problems the wall a texture which will help the bind. Of plaster to go off before you apply those, however, may... Especially in a bathroom as moisture and water can get in causing failure stated time ready to painting... External plasterboard corner t be tempted to apply PVA or similar to bare plaster as contamination. Using skim plaster & Q second coat in the same way as they would be if actually using! To start method is to use an angle bead that is fixed the! A roller to create the best surface in your newly-built home or remodeled room looking... From all of us at B & Q a sizing solution you then... With drywall tape and compound and drywall tape and compound and drywall tape compound... Can get in causing failure when you paint over fresh drywall with regular wall paint, need... The back of the cuts and remove it from the steam with gloves and apply a primer undercoat... At the bottom of your chose to go off before you 've applied it your wall and place steamer! Walls and any peeling paint electrical switches and sockets always a good finish when decorating but the difference barely! ’ t be removed with your stripping knife into one of the tape fully! Is barely noticeable time the 300mm jointing knife is used plan to tile to minimize the cut-in work you. Effort to glide the paintbrush smoothly along the join between architrave and the behind! Sheet of plasterboard need right at your finger tips PVA is okay as a to. To fully dry before moving on to the third and final coat remove the paper you fill as dust! Barely noticeable down matt emulsion paint ( find out more about sizing solutions in our project..