The correct thickness for ceiling drywall is ½ inch (12.7mm). ½ inch-thick drywall panels are recommended because they are easy to carry and hang on ceiling rafters during installation. You can also use the much lighter half-inch boards that weigh 54.4lbs as they are more suited for ceilings.
¼ inch drywall = 1 inch to 1 ¼ inch long screws½ inch drywall= 1 ¼ inch to 1 ⅝ inch long screws⅝ inch drywall= 1 ⅝ inch to 2 inch long screws.
To hang drywall on a concrete or brick ceiling, you can use joint compound as mastic. You mud the backside, create a 2×4 “T” to hold it tight against the ceiling and then nail it in with concrete nails. You can also rent a drywall hoist to push it tight to the ceiling.
You may be asking “How do I cut drywall on the ceiling accurately?”
Run a utility knife along your square to cut the paper and some of the drywall core. Take the knife out and place it at the bottom of the drywall to make the rest of your cut in an upward direction. If you are not tall enough to reach the top of the drywall sheet, you can lay it down on the floor to make your cuts instead. Use a new, sharp blade since a dull blade could tear the paper on your drywall.
How much does it cost to install drywall ceiling?
Installing a drywall ceiling costs $300 to $400 for a 150-square-foot room. Expect to pay $2 to $3 per square foot for labor and materials. Standard, smooth drywall ceilings are the easiest and cheapest to install. They look great in any room, especially when painted the same color as the walls.
We learned average cost to install drywall is about $2,290 (1,000 sq. ft. of drywall). Find here detailed information about drywall installation costs.
How to estimate drywall?
How to Estimate Drywall or Sheetrock. You can both estimate the total square feet of drywall, also known as gypsum board, you’ll need and the number of sheets. For an estimate, use the calculator above or follow these steps: Drywall needed = total area/sheet size. Multiply the length and height of one wall.
Drywall needed = total area/sheet size. Multiply the length and height of one wall. Don’t worry about excluding windows and doors, they’ll get trimmed later. Record the area.
Remove a switch plate to see the cross-section of your wall. Paper-backed gypsum indicates drywall. Enter your attic to inspect the backside of the interior walls and ceilings. A few additional things to take a look at are try to push a push pin into your wall, find out when your home is built, or inspect any cracks in the wall.
How wet can drywall get?
The normal rule is that if drywall has been wet for over 48 hours, then it needs to be removed and replaced immediately. Wet insulation should be removed too. Can wet drywall cause mold? Wet walls and insulation will hold moisture for a long time.
You should be asking “How to effectively dry out wet drywall?”
Black patches or streaks on drywall. Warped spots on wood walls. Cracks, blisters, or discolored areas on wood walls or drywall. Rusted or warped spots on metal stud walls. Chipped, bowed, or dissolved spots on brick or stone walls.
What Happens with Wet Drywall. Stop the Water Source Before addressing wet drywall, the water source must first be removed, or it will contribute to permanent damage and spread to new areas. Assess the Damage Determining if drywall is salvageable will depend on the amount of water absorbed.
Cut out a rectangular/square section in your ceiling 2 inches wider than the damage appears to be confined to. From new drywall cut a rectangular/square shaped piece a bit bigger than the hole, so you can carefully trim it down to size. If the damage is at all widespread, you’re best removing the drywall to the joists., and more items.
While drywall isn’t the most resistant to water, it can still withstand small amounts of moisture. If your home has experienced heavy flooding, chances are your drywall has absorbed a significant amount of water.