FAQ: How To Install Plywood Floor Over Concrete?

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 attach plywood to concrete?

One way to attach plywood to a concrete surface is to screw it into place with concrete fasteners. Another way that involves less strain and hard work is to glue the plywood to the concrete. This only requires a few materials and will adhere the plywood very securely in place.

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.

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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.

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.

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.

How do you attach something to concrete without drilling?

If you are willing to make holes in the concrete but do not want to buy the particular drill bit needed, then the simplest solution is to get nails for your project. Standard nails will not work on concrete, but some nails are made specifically for nailing wood to concrete. Cut nails will also work for this as well.

How do you attach wood to concrete without drilling?

Attaching wood with epoxy A common way to secure wooden items to concrete without drill is by using epoxy glue systems. This glue is specifically manufactured for these problems. Before opting for this method, you need to thoroughly clean off and dry the wood for them to bond correctly.

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Will Liquid nails stick to concrete?

LIQUID NAILS® Concrete & Mortar Repair, (CR-805), is a weather-resistant indoor/outdoor acrylic compound with silicone, ideal for repairing and sealing cracks and joints in concrete and masonry surfaces. This easy-gunning sealant dries gray similar to concrete or can be painted.

What can I put over a concrete floor?

You have many choices of flooring that can be placed over concrete in any interior or exterior condition.

  1. Engineered Wood. Engineered wood is real wood.
  2. Cork Flooring. Install cork flooring over concrete as long as the floor is level and clean.
  3. Laminate Flooring.
  4. Tiles.
  5. Decorative Concrete.

Do you screw down DRIcore?

Remember that DRIcore must be installed as a floating floor. Normally it is not recommended to nail, glue or screw DRIcore panels to the concrete surface. In some instances, we suggest minimal fastening of the panels to the concrete surface.

How do you raise a subfloor on concrete?

Follow the instructions below to complete your raised floor:

  1. Install R9 insulation, paper backing up, between the floor joists.
  2. Go to one end and corner of the wall, and install your plywood perpendicular to the joists.
  3. Measure, cut, and install a filler.
  4. Measure and add filler pieces along the length of the wall.

How can I make my concrete floor more comfortable?

Tips to cozy up your concrete floors

  1. Radiant heat floors. One way to combat cold toes is by installing radiant heat flooring.
  2. Add a rug. If you have existing concrete floors, you can cozy them up for the winter with a simple area rug.
  3. Throw blankets.
  4. Add natural light.
  5. Decorative lights.
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How do you insulate a raised floor over concrete?

There are two ways to handle insulating concrete floors. You can attach wood sleepers to the floor, fill the gaps with rigid-foam insulation, and then apply a subfloor and finish flooring.

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