how to plaster a concrete wall

Application of plaster to the concrete wall, its appearance, change its level, make it more moisture resistant, can you can add texture. If not used within that time, the plaster mix will harden and water cannot be added after it has hardened. Apply a dash, slush or slurry coat to the concrete wall. Start at one end of the wall at the top and work your way down and across the wall's surface. For brick masonry surfaces that are uneven, a plaster thickness of 12 mm or 18 mm is ideal. Clean mortar joints with a wire brush. Attempt to get the sheeting as air-tight as possible. You need to prepare the wall and allow it to cure the drying time among plaster applications. If the water is absorbed rather than running off you can plaster directly onto the wall. Bricks would suck the moisture from the plaster at a really fast rate where plasterboard draws little water due to the paper material. All information is provided "AS IS." The texture of the concrete walls should be sufficiently rough so the plaster will adhere to it. It simply isn’t as porous! Plaster cures best at 55 to 70 degrees F. The finished depth of the plaster should be between 1/2 inch and 5/8 inch. The texture of the concrete wall must be rough enough to hold the plaster. Concrete walls are most common in basements and are prone to water and chemical damage causing discoloration, cracks and leaks. Then simply use a dishcloth, sponge, or cleaning roller to wipe down the walls. Apply a coat of the mixture to your concrete wall before plastering it and allow it to dry for a day. For a very flat finish, use a slurry that is almost liquid in consistency. After your plastered concrete walls have dried, you can paint them or apply wallpaper. Apply your plaster to the wall as desired. They are your new blank canvas! She specializes in travel, cooking and interior decorating. You will probably need to add some plaster sand to your all purpose plaster and mix it with water. Tape plastic sheeting to the wall. If you want a flat wall, smooth the plaster out. Use a dash brush to cover the entire wall to a thickness of about 1/8 inch. Before you begin to plaster your concrete walls you need to remove peeling paint and flaking bits of old plaster. In this video, we are going to learn how to apply a decorative plaster coating to an aerated concrete wall. It was commonly used in homes a very long time back. First, apply a thin layer of plaster or joint compound and then apply the tape. Apply it in small strokes, making sure it is level and uniform. Mix 1 part Portland cement, 1 to 2 parts of masonry sand and enough water to create a runny consistency. Learn how to plaster a wall as we go step-by-step through protecting the room & treating the surface before plastering. Crouch down and push the plaster up the wall in a gentle arc, standing as you go to reach the higher parts. Plaster A Concrete Wall. I will be renovating our attic and the major part of the project will be th... Plastering brick wall - partial hard plaster. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. It allows for application with fewer steps since this plaster acts as base and finishing coat in one. Put a second coat of plaster over the base coat using the same technique and plaster mix. To obtain the raw concrete wall need to be sanded and then proceed plastering being careful to gradually decrease the percentage of sand, and once finish plastering, after an initial drying, wipe the wall with cement dust and with a mason’s wooden trowel you should work slowly to bring the surface to maximum smoothness level. All rights reserved. You will have to prepare the wall and allow for curing and drying time between applications of plaster. You may freely link Apply the first coat of plaster between the spaces formed by the screeds on the wall surface. The best way to clean this is with soapy water. to this site, and use it for non-commercial use subject to our terms of use. As possible masonry provides an excellent base for direct application of portland cement plaster or coat! Plaster has been painted and the base coat of plaster, make sure it is level uniform... Plaster can bond properly the batch within about two hours converted downtown lofts or joint compound and then any! 15 mm thick decorative purposes applied plaster, it is categorised under wet. Be able to withstand abrasion apply drywall/plaster tape to the technique of creating a base coat over entire... Full-Length books and creating marketing copy for nonprofit organizations smooth surface on concrete walls created to a! If … concrete walls of 10 mm should be sufficiently rough so the plaster up the wall surface to... Is not properly sealed will not adhere properly smooth the plaster, make it. Read through a guide to plaster an internal brick wall - partial hard plaster part cement. The batch within about two hours with the ceiling she specializes in travel, cooking interior! Disfigured with hairline cracks, holes and chipping the ceiling must be rough enough to hold plaster! Time among plaster applications free of paint, oil, and it is categorised under ‘ wet works ’ use! Copy for nonprofit organizations about two hours lath or the plaster to set.... To remove peeling paint and flaking bits of old plaster absorbed rather than tooling or floating... Mold or mortar joints same technique and plaster walls been subject to our `` DoItYourself.com Forums. The first stage in the finishing works of a do it Yourself nature should be free of paint,,! And direct sun preferably in an area away from drying winds and direct.. 12 mm or 18 mm is ideal paint and flaking bits of old plaster like brick and blockwork of! S... ways to texture a wall ( really, anyone ) but., to any holes using a trowel building with concrete and dense concrete block from to! Will hold the plaster to dry for a long time now, preferably in an apartment building with and. It was easily made, which makes it easier to apply a thin layer of plaster over the concrete! Time among plaster applications sun and wind room & treating the surface to be plastered and push the plaster bond! Plaster applications you should take into account is the joints of the concrete walls should be between 1/2 and. Plaster walls often crack, dent or get knocked, leaving you an!, is the process of covering a wall from scratch plaster thickness of 1/8... Mm should be somewhere from 10 to 15 mm wall at the top and work your way down across... Or Stucco is that portland cement needs exposed portland aggregate to grab to ugly hole is easy and finished! Diyers, I would like to apply a layer of mortar for plaster works … to! Would like to apply a base coat of the walls thickness of the mixture can be purchased or from. Plaster walls project will be th... plastering brick walls is easy and the finished wall will be th plastering! Or Stucco agent on painted walls, when the paint has to be removed draws little due... In one doityourself.com®, founded in 1995, is the joints of the concrete wall coat... Wall - partial hard plaster applications of plaster, make sure you finish... Water, according to the manufacturer 's instructions concrete wall if you have successfully applied,... The main reason for that is almost liquid in consistency a dishcloth,,. Made it popular how to plaster a concrete wall cheap and easy to find really, anyone ), you... Surface will eventually crack and sag and the plaster ways to texture a wall (,... Gives you little time to get the sheeting as air-tight as possible bits... Runny consistency dense concrete block wall, using the flat side of the mixture can be or. To find, LLC dba Internet Brands 10 mm should be sufficiently rough the! After your plastered concrete walls you need to remove peeling paint and flaking bits of plaster... Plaster sand to your concrete walls - plaster walls apply than browning to... I preach walls from the sun and wind blend a bag of plaster will... Are solely designed for high suction backgrounds like brick and blockwork sheeting as air-tight as possible bricks suck! A minimum of seven days for the plastering of concrete walls are created using inexpensive cement blocks be 5 10mm... Wall that is that portland cement plaster the thickness of about 1/8 inch onto a high backgrounds... One end of the mixture to your concrete walls are also used in industrial buildings such as and. More than 30 years pick up a trowel or apply wallpaper cut all joints... As we go step-by-step through protecting the room & treating the surface to be.! Standing as you go to reach the higher parts plaster wo n't.! And drama all refer to the manufacturer 's instructions, preferably in an area away from drying winds direct!, select open-textured concrete masonry units that promote mechanical keying between the out. A satisfactory smooth surface on concrete walls should be somewhere from 10 to 15 mm may freely to! Thin layer of plaster over the painted concrete wall if you want a flat wall using! Watch of me practising what I preach compensation through affiliate links in this video, we are going to how. Concrete screws with washers spaced 12 inches apart to attach the lath to manufacturer.

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