![]() The joints between the boards will need to be covered with scrim and mesh tape before the plasterer skims.I've used the Polycell plaster skim to good effect. The easiest way to do this is to screw it directly to the timber battens you have fixed to the wall and ceilings - use plasterboard screws and ensure the screw heads are sunk below the surface of the boards. You could even fix the plasterboard to the wall yourself. This is where small sheets of plasterboard are stuck to the wall using ‘dabs’ of adhesive.īy cutting sheets of plasterboard to fit yourself, you will save your plasterer time and money when it comes to doing the job. In other instances, plasterboard can be ‘dabbed’ to the bare wall. In addition, fixing plasterboard to bare walls by screwing it to timber battens means a layer of insulation can be added if required. When renovating it’s often simpler to plaster over plasterboard than bare brickwork as it only needs a skim coat - it is generally the cheapest option. (Image credit: Getty Images) Save Time and Money by Plastering Over Plasterboard ![]() Once dry, your plasterer can apply a skim coat directly Add a plaster primer such as Thistle Bond (opens in new tab) that you simply paint directly on to walls.Alternatively, use a product such as Blue Grit (opens in new tab), an adhesive containing small sand-like granules that stick to the wall and provides an excellent base for a new plaster coat Scrape away any old pieces of wallpaper and apply an adhesive, such as a diluted solution of PVA.Any damaged and crumbling old plaster will need to come off the walls before the brickwork beneath is cleaned.If you want your plasterer to apply a fresh skim coat to old plaster walls, you will need to prepare your walls. ![]() However, if you want to keep your skirting boards in place then most plasterers should be able to skim down to the existing skirting boards, although this is time consuming Remove old skirting boards before plastering - most plasterers will find it easier to plaster down to an inch or two above the floor than to skim down to the top of skirting.Your plasterer will need access to a water supply, so aim to provide a route to the water source that doesn’t involve traipsing plaster and mess through your entire house.Before your plasterer starts, it helps if you can clear the room out, cover carpets and cover anything that can’t be taken out of the room.When plastering walls during a renovation there is often the need for more prep work to ensure the older walls are plaster-ready. Plastering Walls in Your Existing Home or During a Renovation Project Plasterboard is also very absorbent, so it should be sealed with a diluted PVA solution or a product such as Gyproc Drywall Sealer (opens in new tab) first before painting. While this method is cheaper than plastering, care needs to be taken - if plasterboard gets too wet it becomes weak, and it is easy to damage the paper surface of the plasterboard if you’re not careful. Instead, the screw holes are filled, the joints between the boards covered with paper tape (scrim) and then a jointing compound, and you’re good to go. Of course, the main reason for this is cost, so there’s no need to employ a plasterer. It is usually internal walls or stud walls but sometimes the inner faces of exterior walls are simply lined with plasterboard before being painted or papered over - no plaster skim coat. Many new homes are not actually plastered at all. This should be smooth and not show any trowel marks or undulations as it is, essentially, the finished surface of the walls and ceilings in your new homeįor even more advice, information and inspiration delivered straight to your door, subscribe to Homebuilding & Renovating magazine. At this point, the plasterer should judge if the render has set sufficiently and the topcoat plaster skim finish is applied.These two coats should be used to ‘dub’ out and fill any indentations or undulations in the wall.This should be left to set and then scratched, using a float with nails in it, in a swirling fashion to provide a stable key for the next coat, which is applied when the first scratch coat is still green but before it has dried out completely.Apply a layer of plaster - all blockwork walls to be plastered should receive one coat of sand and cement render, known as a scratch coat.Metal angle beads should be used to ensure a crisp finish around external corners.Firstly, plasterboard screw heads should be countersunk and filled with the joint between the boards taped.In the case of new builds, you can apply plaster directly to plasterboard. Plastering walls in a new house or extension requires a different approach to a renovation project.
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