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Plywood-on-slab. Place a 6-mil polyethylene vapor retarder directly over the concrete. Lay 3/4-inch plywood sheets opposite to the direction of the finish flooring, leaving a 1/4-inch gap between panels to eliminate squeaking. Fasten the plywood to the concrete using powder-actuated fasteners or concrete nails.
Can you install plywood over concrete?
If you’re installing plywood over an existing dry concrete floor, you shouldn’t have any problem. However, a new concrete floor contains a lot of moisture. The moisture level of the concrete should be down to 5.5% before attaching the plywood subflooring.
How do you install a plywood subfloor on a concrete slab?
To install a floated subfloor system, first place a layer of plywood subfloor panels with the edges parallel to the wall. Use a ¾” spacer between the plywood and the wall and a 1/8” spacer between panels. Next, lay a second layer of plywood at a 45-degree angle to the first layer.
Can you put a subfloor on concrete?
You need a dry, clean and flat surface before you can install finished flooring in a room built on a concrete slab. One of the simplest options is a sleeper-based subfloor. The result is a subfloor that protects finished flooring from cold and damp concrete-based floors.
Do I need a vapor barrier between concrete and wood flooring?
Do I need a vapor barrier for hardwood floors?” The answer is YES! Moisture can destroy hardwood flooring. It causes cupping, warping, and even mildew if not treated. You must install a moisture barrier to protect your flooring from water wicking up from below.
Do I need a subfloor over concrete?
If you don’t plan to use the space, there is no need for a subfloor or floor covering. Concrete or tile-over-concrete are acceptable floors for uninhabited basements. But to install any kind of floor covering—engineered wood, laminate, carpeting—basement subflooring is highly required.
What underlayment should I use on concrete?
With a concrete subfloor, you will need an underlayment that acts as a vapor barrier in order to prevent moisture from penetrating through to your laminate installation. The normal choice is a thin foam pad material made of polyethylene or polypropylene, which rolls out in sheets.
Can you lay OSB on concrete floor?
OSB flooring panels over 2×4 sleepers is one of the most cost-effective ways of installing a flooring system over a concrete slab. Sleepers can be installed so that they are level, thus overcoming flaws in the concrete slab and providing a straight, even surface on which to place the flooring system.
How do you attach plywood to a concrete wall?
Apply a layer of construction adhesive with a caulk gun to the back of the plywood. Lean the plywood against the concrete block, making sure the wood is where you want it as the glue dries. Use 2-by-3 lumber to brace it in position as the adhesive sets.
Can you glue underlayment to concrete?
No, you should not glue down your underlayment. Underlayment is is a floating material, the same as your laminate flooring. In most cases, you should not glue or nail your underlayment down. You should always check with the installation instructions of the underlayment for proper installation instructions first.
How do you install subfloor over uneven concrete?
6 Ways To Fix Uneven Subfloors Or Concrete Slabs Use Self-Leveling Concrete/Underlayment. How to Self Level Concrete Floors Like Pros – Self Leveler. Install A Flooring Underlayment. Grind Or Sand The Subfloor. Replace The Subfloor. Fix Your Floor Joists. Stabilize Your Foundation.
Can you put wood flooring directly on concrete?
If you have a concrete slab main floor or basement, you may be wondering if it’s possible to install hardwood flooring directly on top of the concrete. The short answer is yes.
What should I put between wood and concrete?
The wood will soak up the moisture from the concrete and the wood will rot. Pressure treated wood is more resistant to rot but over time, it will have the same effect. It’s best to always have a barrier, a thin plastic foam sheet called “sill seal”, between concrete and wood.
Can you lay engineered hardwood over concrete?
Engineered hardwood can be installed on concrete using the glue-down installation method. We recommend using an acrylic or urethane wood adhesive, such as Bostik Pro-Cure or East Bay Clipper. Before installing any flooring you must follow the instructions set forth by the flooring manufacturer.
How do you cover a concrete floor?
6 WAYS TO COVER CONCRETE FLOORS Textured Concrete Floor Coverings. If you are looking for a 3-dimensional textured floor covering that resembles most any natural material (stone, tile, wood, etc.) Thin Section / Microtoppings. Spray Applied or Stenciled Concrete. Self-Leveling. Epoxy Coating. Polishable Overlay.
How do you install sleepers on a concrete floor?
Place the sleepers in mastic around the room’s perimeter, abutting their ends. Secure them to the slab with 2 1/4-inch powder-actuated fasteners or masonry nails. Using the same methods, place sleepers across the slab on 16-inch centers, perpendicular to the direction the finish flooring will run.
How do you install a vapor barrier on a concrete floor?
How to Install a Vapor Barrier on a Concrete Floor Select the Vapor Barrier. Clean Floor and Perimeter Walls. Apply Butyl Tape to Walls. Unroll and Trim Vapor Barrier Sheets. Apply Vapor Barrier Seam Tape. Fasten Vapor Barrier to Wall.
What is the difference between subfloor and underlayment?
Basically, subfloors are a structural part of your home that provide strength and rigidity to your home’s flooring. Underlays, on the other hand, protect your floor covering from moisture, help soundproof your floor, and offer cushioning and comfort underfoot. You can think of your floor like a sandwich cookie.
