Readers ask: How To Construct Floor Framing Over Concrete Slab?

How do you attach framing to a concrete floor?

Use a hammer drill with 3/16″ masonry bit to drill a hole through the wood and into the concrete floor. Use an impact driver to drive a 3″ Tapcon screw through the wood and into the floor. Repeat at the other end of the board. Repeat every 16″ along the bottom plate.

Can floor joists sit on concrete?

Registered. Simple answer is Yes, it’s just a sleeper floor, I would suggest you glue the floor joists to the floor, also be sure to use a good vapor barrier.

What is the best flooring to put on a concrete slab?

Ceramic tile is the designer’s choice, with tons of colors and styles. It’s unaffected by moisture and goes directly onto concrete that’s smooth and free of cracks. Vinyl tile and sheet flooring also goes directly over prepared concrete and will withstand even minor flooding with no ill effect.

How do you attach something to concrete without drilling?

A simple fix might include an adhesive or adhesive-baked hook, while there are other fasteners like hard wall hooks and masonry nails. Powder-actuated fasteners and concrete nail guns are useful for supporting frames and providing a much greater hold.

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Can treated wood touch concrete?

Wood in direct contact with concrete, and the dampness often found there, will rapidly decay. To avoid this, use pressure-treated lumber. This indicates that the wood contains a quarter of a pound of preservative per cubic foot, which is sufficient for use against exposed concrete, outdoors as well as in.

How do you attach floor joists to concrete?

Installing Floor Joists

  1. Use a wooden ledger, and then attach the joists as you would with frame construction.
  2. Use a steel joist hanger that anchors directly to the concrete core of the wall.
  3. Build a ledge on the inside of the building to set the joist on.

Can pressure treated wood sit on concrete?

YES. Any exterior concrete that is in contact with earth may wick moisture. Thus, it is required to place pressure treated wood directly against the concrete if one wishes next to build off that concrete with untreated wood.

Can you pour concrete directly on dirt?

Long story short, yes you can pour concrete over dirt.

Do you need rebar for 4 inch slab?

No, you do not need rebar for a 4inch slab of concrete on grade. A 4inch-thick slab cast on the ground and in permanent contact with it will float and rebar is not required. Rebar is recommended on concrete measuring 5 – 6 inches thick.

How many bags of concrete do I need for a 10×20 slab?

A 60-pound bag yields. 017 cubic yards, and an 80-pound bag yields. 022 cubic yards. For a 10 x 10 slab, you would need 77 60-pound bags or 60 80-pound bags.

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Do I need a subfloor over concrete?

While a subfloor is not necessary to add structural strength when you’ll be laying finish flooring on top of a concrete slab (as in a basement remodel), subflooring over concrete offers two other advantages: A subfloor will help insulate against a concrete floor that becomes overly cold in winter.

Can I put laminate flooring over concrete?

Laminate flooring can be installed over concrete, wood or carpet subfloor or other surfaces. Installation of good quality underlayment is highly recommended. Installing underlayment is easy but it has to be done precise to avoid any tears.

Is concrete floor cheaper than wood?

It is possible for a “fancy” concrete floor to be more expensive than an economical hardwood floor. In general, a tight budget will find concrete floors more budget-friendly, but it depends on the design and finish of the concrete floor.

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