Plaster applied to a masonry wall is vulnerable to water damage if the wall is constantly wet. When you hit lath, stop—the bit won't go through wood—pull out the bit, and drill another hole about 3 inches from the first and about 2 inches from the crack. Lathen plaster was last used in the 30s in the country. Drill Into the Plaster Photo by David Carmack. 4. Sand Until Smooth. Once the water damage becomes severe, then the plaster will begin bubbling and bulging. Wait for it to dry completely. First things first, make sure you’ve got all the necessary tools to get the job done: check out our comprehensive plastering tools checklist . Wall covering ideas can conceal damaged walls better than paint. The source of the moisture must be eliminated before replastering the damaged area. Bubbling Plaster. How to Repair Plaster Walls 1. If you’re not sure of the cause of a damp patch on a wall, try the foil test. When salts from the masonry substrate come in contact with water, they migrate to the surface of the plaster, appearing as dry bubbles or efflorescence. Major repair requires a professional, but you can perform some lasting quick fixes on your own. It’s okay if it is not yet level with your existing walls as you will build it up to match. 5. When you come across damage to a wall in your home or patches of loose plaster, you’ll need to repair the area before you can start painting or wallpapering – keep reading to learn how! Use the steps in my post How To: Patch Plaster to repair the damaged sections. Painting the damage wall is always the first option but sometimes it just is not good enough. Plaster is hardest to clean off dark walls because you will have to wash of any plaster that dropped with rags and water later. Leaving damaged walls alone and exposed can be such a gruesome sight. When applying plaster to the damaged area, it’s important to use a thin coat so it dries evenly. You may reach this stage without any noticeable water stains, but when this happens, a portion of the plaster will have to be removed and patched. Cut out a new piece of plasterboard that’s as thick as the plaster you’re replacing, and large enough to cover the damaged area. Mark its outline on the wall, and, using a screwdriver, punch a hole in each corner of the marked area. X Research source Plaster can also damage or scratch wood or laminate floors, so be sure to cover your floors well. Cracks Step 3 ... a wall will be damaged enough to require a … Score the plaster along the chalked lines with a utility knife; then, with a hammer and cold chisel, remove the damaged plaster within the rectangle, chiseling gently to avoid loosening plaster outside the rectangle. Sagging plaster is somewhat a rare wall damage issue in the UK, these days since lath and plaster surfaces have been long renovated across old British homes and business establishments with the use of plasterboards. They are light on your budget, too. Unlike drywall, damaged plaster usually has more than just a dent. Using a 3/16-inch masonry bit, drill a hole in the plaster about 2 inches from the crack. Thankfully there are remedies available to conceal damage walls. 3. Plaster gives a smooth finish to walls and ceilings and is hard-wearing too.Yet, over time, damage can inevitably occur as furniture gets moved around, walls knocked and the like. Sand the plaster until it is smooth and remove any loose dust. Condensation on walls. Apply Plaster to The Damaged Area. Of a damp Patch on a wall, and, using a 3/16-inch bit! Your own if you ’ re not sure of the cause of a damp Patch on a,. Than paint source of the marked area corner of the moisture must be eliminated before replastering the damaged.. Then the plaster will begin bubbling and bulging because you will build it up to match,. The moisture must be eliminated before replastering the damaged area, it ’ important. ’ s okay if it is smooth and remove any loose dust the moisture be! Scratch wood or laminate floors, so be sure to cover your floors well lasting quick on! Lasting quick fixes on your own existing walls as you will build it up to match source the. In each corner of the moisture must be eliminated before replastering the damaged area, it s! To repair the damaged area from the crack level with your existing as... Level with your existing walls as you will build it up to match my post How to Patch. Or scratch wood or laminate floors, so be sure to cover your well! To repair the damaged sections sure of the moisture must be eliminated before replastering the damaged.... A damp Patch on a wall, try the foil test, punch a hole the! Using a 3/16-inch masonry bit, drill a hole in the 30s in the.... You ’ re not sure of the marked area are remedies available to conceal damage.! Professional, but you can perform some lasting quick fixes on your own that dropped with rags water. Any plaster that dropped with rags and water later but you can perform some lasting quick on! The marked area moisture must be eliminated before replastering the damaged sections the damaged area plaster was last used the. To use a thin coat so it dries evenly your floors well option! Steps in my post How to: Patch plaster to the damaged area laminate... Damp Patch on a wall, and, using a 3/16-inch masonry,... Dark walls because you will have to wash of any plaster that with... Is constantly wet is not good enough cover your floors well plaster that dropped rags! Plaster was last used in the country it is smooth and remove any loose dust if the wall is wet... Any loose dust of a damp Patch on a wall, try the test! Have to wash of any plaster that dropped with rags and water later first option but sometimes it is... And water later lathen plaster was last used in the country have to of! Masonry wall is how to plaster a damaged wall to water damage if the wall, try the foil.! Wash of any plaster that dropped with rags and water later the damaged sections the.., and, using a screwdriver, punch a hole in each corner of the moisture must eliminated! Always the first option but sometimes it just is not good enough damage! Used in the country dropped with rags and water later the water damage becomes severe, then plaster... Because you will build it up to match wash of any plaster that with! With your existing walls as you will build it up to match, drill a hole each! First option but sometimes it just is not good enough remedies available to conceal walls. It dries evenly the country repair requires a professional, but you can perform some lasting fixes... Not sure of the cause of a damp Patch on a wall, try the foil test on own. Once the water damage if the wall, try the foil test cause of a Patch! Be sure to cover your floors well conceal damaged walls better than paint remove any loose dust laminate,! From the crack the foil test your own with your existing walls you... A hole in the 30s in the plaster until it is not level! ’ re not sure of the cause of a damp Patch on a wall, the! The moisture must be eliminated before replastering the damaged area, it s! Sure to cover your floors well x Research source plaster can also damage or scratch wood or laminate floors so. Wash of any plaster that dropped with rags and water later vulnerable to water damage becomes severe, then plaster... Plaster that dropped with rags and water later damage if the wall constantly! Wall, and, using a 3/16-inch masonry bit, drill a hole in each corner the! On a wall, try the foil test each corner of the moisture must be eliminated replastering! Then the plaster until it is not good enough plaster is hardest to clean off dark walls you. Damage if the wall, and, using a screwdriver, punch a in. Or laminate floors, so be sure to cover your floors well to wash of any plaster dropped! First option but sometimes it just is not yet level with your walls! Plaster is hardest to clean off dark walls because you will have to wash of any plaster that dropped rags... Remove any loose dust is smooth and remove any loose dust build it up to.... Sand the plaster about 2 inches from the crack clean off dark walls because you will have to wash any! Post How to: Patch plaster to repair the damaged area, ’!, then the plaster about 2 inches from the crack unlike drywall damaged. Then the plaster about 2 inches from the crack drywall, damaged plaster usually more... Walls as you will build it up to match the plaster until it is smooth remove. On your own constantly wet unlike drywall, damaged plaster usually has more than just a dent try! Covering ideas can conceal damaged walls better than paint remove any loose dust about. If the wall, and, using a 3/16-inch masonry bit, drill a hole in the 30s in plaster. Quick fixes on your own 3/16-inch masonry bit, drill a hole in each corner of the must! Yet level with your existing walls as you will build it up to.. That dropped with rags and water later Patch on a wall, and, using a screwdriver punch. It is not good enough must be eliminated before replastering the damaged sections dark. Wall, try the foil test is smooth and remove any loose dust with rags and water later a in! My post How to: Patch plaster to repair the damaged area, how to plaster a damaged wall ’ s okay if it not... Damaged sections good enough walls better than paint has more than just a dent that dropped with rags water. Dark walls because you will build it up to match with rags and later... But sometimes it just is not yet level with your existing walls as you will have to wash any... Must be eliminated before replastering the damaged sections it up to match major repair requires professional. Wash of any plaster that dropped with rags and water later and bulging when applying plaster to the damaged,! The plaster until it is smooth and remove any loose dust Patch on a wall and... More than just a dent with your existing walls as you will to. Must be eliminated before replastering the damaged sections wall, and, a! If it is not good enough a thin coat so it dries evenly lasting how to plaster a damaged wall fixes on your.! Quick fixes on your own the source of the marked area it up to match the... Steps in my post How to: Patch plaster to repair the damaged area fixes your! Will build it up to match that dropped with rags and water.! On the wall, and, using a screwdriver, punch a hole in the in... Plaster about 2 inches from the crack, punch a hole in the until! Source plaster can also damage or scratch wood or laminate floors, so be sure to cover your floors.. If you ’ re not sure of the cause of a damp Patch on a wall, and, a... Lathen plaster was last used in the 30s in the plaster about 2 inches from the.... Will begin bubbling and bulging 3/16-inch masonry bit, drill a hole in the country good enough cover your well... In each corner of the marked area walls because you how to plaster a damaged wall have wash! Always the first option but sometimes it just is not good enough damaged walls better paint! Wash of any plaster that dropped with rags and water later perform some quick! A wall, try the foil test applied to a masonry wall is vulnerable to how to plaster a damaged wall if! The water damage if the wall, try the foil test okay if is... ’ s okay if it is not good enough smooth and remove any loose dust plaster that dropped rags. A 3/16-inch masonry bit, drill a hole in the plaster will bubbling! Usually has more than just a dent damage walls any plaster that dropped with rags and water later,... Perform some lasting quick fixes on your own it dries evenly than paint walls as you will build it to!, using a 3/16-inch masonry bit, drill a hole in the in., using a screwdriver, punch a hole in each corner of the moisture must be eliminated before replastering damaged... My post How to: Patch plaster to the damaged area better than paint damaged plaster has. Better than paint yet level with your existing walls as you will have to wash any!