Can you use joint compound on concrete ceiling?

Can you use joint compound on concrete ceiling?

Either plaster or joint compound can be used for skim coating concrete ceilings. The wet plaster or drywall “mud” must be mixed so it is easy to spread ,but not so thin that it will drip from the ceiling.

Can you use joint compound on ceilings?

Mix up a small batch of 20-minute setting-type joint compound to a peanut-butter consistency, mist the ceiling with water from a spray bottle—that ensures the compound will set properly—and apply a thin layer of compound to the ceiling with the taping knife.

Does joint compound adhere to concrete?

Drywall mud works best on concrete in dry rooms with low humidity. If you’re trying to skim coat damp basement foundation walls with joint compound, you’ll likely be disappointed by the outcome. In this case, using sheetrock is a far better option. Other options include plastering or using stucco on the walls.

What does joint compound do?

The primary use for joint compound is to seam and smooth new drywall installations. It’s sold premixed in 1-quart to 5-gallon containers or in a powdered form you can mix yourself with water. Although it can be used for smaller projects, it is sold in large containers and designed to cover a large area.

Can you dot and dab a concrete ceiling?

you cant dot & dab it. you can float & set it.

How do you smooth out a concrete ceiling?

For a perfect finish:

  1. Sand away any compound that isn’t perfectly feather-edged to the ceiling. A flashlight and a pair of stilts would help alot.
  2. Prime the ceiling.
  3. Then apply a skim coat of compound with a 14″ flat trowel (not a drywall trowel).
  4. Lightly sand and follow with primer again.

Can I use joint compound on plaster ceiling?

All-purpose joint compound is a building material drywall finishers use to spackle, or mud, a drywall installation. All-purpose joint compound adheres well to most surfaces, so you can use it to make repairs on plaster walls.

What is the difference between joint compound and texture?

Texture mud is known for being thinner and will shrink when applied. On the other hand, the joint compound is a thicker, more robust drywall mud that offers good durability. Its issues involve being difficult to sand and finishing has to be handled with care.

What does joint compound stick to?

Joint compound, commonly called mud, is the wet material that is used for drywall installation to adhere paper joint tape, fill joints, and to top paper and mesh joint tapes, as well as for plastic and metal corner beads. It can also be used to repair holes and cracks in drywall and plaster.

Can drywall touch concrete?

Drywall should definitely not touch concrete as moisture will wick (ie flow up the surface as in a candle/lamp wick) into the drywall and encourage mold growth. 3/8″ should be sufficient – your prop up plan is not only appropriate, but a common technique used by drywallers.

What is the difference in joint compounds?

Drywall joint compound comes in either of two forms: dry or wet. Dry joint compound is the classic type that has been used for years and is still used by professionals. Wet joint compound is a newer product more aimed at the residential do-it-yourselfer.

What is the difference between plaster and joint compound?

This joint compound is sometimes also referred to as drywall mud by the professionals. On the other hand, plaster is made up of lime or a combination of gypsum powder, sand, and water. Unlike joint compound, this mixture forms a relatively thick paste.