Subfloors for Concrete A decorative concrete flooring material can be installed over an existing concrete slab, a plywood subfloor or a 3/4-inch solid hardwood flooring. ... Concrete is a rigid material that must be installed over rigid materials. Floor joists must be perfectly straight.
Can you put cement on plywood?
Once the plywood subfloor is covered, just apply the finish you want to achieve the desired look. ... You can also use self-leveling concrete on plywood as an underlayment for other types of floor coverings, such as carpet or tile.14 jul 2020
How deep should a sub base be for a concrete slab?
A flat base course will also allow the slab to slide easily as it shrinks, reducing restraint and the risk of cracks as the concrete contracts after placement (drying shrinkage). The entire subbase and base system should be at least 4 inches thick—thicker if the engineer feels it is needed for proper support.31 jul 2018
How deep should a concrete floor be?
Standard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks.
What is the minimum concrete floor slab thickness when supported on the ground?
The thickness of concrete floor slabs supported directly on the ground shall be not less than 31/2 inches (89 mm).
What's the minimum thickness for concrete?
What is the minimum thickness for concrete? A: Concrete is typically applied at a thickness of 2 inches or more, but the thicker it is, the stronger the slab will be. Four inches is most common for a slab. The thinner applications would include drives, walkways, slabs and footers, just to name a few.
Can you pour concrete on plywood?
Many contractors will tell you that pouring concrete over wood can be a tough job to undertake. For example, plywood is notoriously difficult to pour over since the wood is very porous and won't allow the concrete to settle evenly. ... You can pour concrete over plywood floors.
Can you put a concrete floor over a wood subfloor?
Yes, it's not great idea and it will likely crack because the wood is flexible and the concrete is rigid. the wood floor is designed to carry a certain load, so the concrete you put over it should be a lightweight concrete underlayment/self leveling type product.
How do you get concrete to stick to plywood?
Some concrete contractors extend the stick-resistant life of the plywood by using a refresher coating of a commercial release agent or a solvent-thinned linseed oil.
How do you install subfloor on concrete?
https://www.youtube.com/watch?v=BaTLu-9GO20
What do you put under wood on concrete?
Lay 6-mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. Then fasten 3/4-in. treated plywood to the concrete with concrete screws spaced every 16 in. Alternatively, screw rows of treated 1x4s to the concrete 16 in.
What kind of flooring is best to put over concrete?
- Engineered Wood. Natural hardwood flooring offers undeniable beauty and durability. ...
- Vinyl. As a longstanding choice for kitchens and bathrooms, vinyl has a reputation for extreme water resistance. ...
- Laminate. ...
- Carpet. ...
- Tile.