If your walls in your house are ugly or dull because of plaster that is past its prime or not to your taste, you can cover the plaster with drywall. By using some sheets you can cover up old imperfections without a lot of complications. Lath and plaster ceilings do not react well to vibration or water ingress. If enough of them snap off the weight cannot be supported and the ceiling collapses. Similarly, water from above soaks into the porous plaster and weakens the nibs.
Lath and plaster largely fell out of favour in the U. In Canada and the United States, wood lath and plaster remained in use until the process was replaced by transitional methods followed by drywall in the mid-twentieth century. First, wood laths, narrow strips of wood, are nailed horizontally across vertical wall studs.
Two wet coats of plaster are applied to the laths. After the plaster completely dries, the walls can be painted. What is lath and plaster? Laths are thin strips of wood around mm wide and mm thick spaced around 5mm apart and nailed to the ceiling joists above. If you just want to cover an unsightly wall where the plaster is in good shape, go ahead and attach drywall over the plaster.
I would recommend taking a long flat surface either a straight board or a level and making sure all the walls are flat, both vertically and horizontally. They can be out of level by a bit, but flat is important. If this reveals lots of bulges or cups in the wall, flatten it while it's exposed.
If you find it's not flat and pull the lath, you may still find the studs are not flat. For any studs that have a significant cup in, you can sister a second stud beside it to give a good nailing surface, just be sure it's not on a seam between two sheets of drywall. And if any studs have a significant bow out, you can plane them down slightly though if you have to remove more than a half inch, I'd sister another stud for structure.
Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Can drywall be installed over lath? Ask Question. Asked 9 years, 4 months ago. Active 9 years, 4 months ago. As opposed to removing lath — which is pretty simple as detailed in the previous section- removing plaster from wood lath can be a tricky process and requires attention to detail.
You should also ensure you have all the necessary tools and safety gear. Then pull the end of the crowbar downwards to tear through the plaster. Use the procedure detailed below to do this effectively:. Inspect the lath strips and make sure each of them are properly fastened to the studs. Nail down any loose lath strips and clean off dust and dirt. Start installing the first row of drywall sheets from one top corner of the wall. The edges of the panels should be aligned to the center of the timber studs for proper fastening.
Drive 2-inch drywall screws through the panels and into the studs, ensuring the screws are at least 6-inches apart. Pro tip: Always check for any plumbing leaks and fix them before installing Sheetrock panels. Moisture can easily cause damage and lead to drywall crumbling and disintegrating.
If you need to cut any panels to size to complete a row, you can simply do so using a utility knife.
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