Plywood underlayment is typically needed when a floor material must have a very smooth, flat surface. For example, if you install resilient tiles or sheet flooring over a subfloor, any bumps, dips, or voids in the subfloor may be evident in the finished flooring.
Do you need underlayment on top of subfloor?
Underlayment for laminate flooring is a must. Since laminate is a floating floor, it must be evenly distributed across your subfloor. Underlayment is what allows the floor to float, gives it stability, support, noise reduction, and supports the locking systems in between planks to assure the sturdiest flooring project.
Can I put plywood on top of plywood?
Install a layer of at least ½” or preferably 5/8” ply over the existing planks. This is particularly important if your old sub floor has lumps and bumps in it. If you don’t respect this thickness of ply, then you’re highly likely to see rises and falls in your new flooring.
Can I put plywood on top of subfloor?
Plywood is a great underlayment to install over a subfloor. It is strong and durable and often very smooth without a lot of imperfections or knots. In this article, we have laid out the steps to installing plywood over a subfloor. By following these steps, you can get your flooring ready for its final form.
How do you attach plywood to plywood subfloor?
Quote from the video:
Quote from Youtube video: Remember to leave an eighth to a quarter inch expansion joint between the panel. And the wall. Stand on each panel during fastening to ensure full contact with the subfloor fasten.
What goes on top of subfloor?
Underlayment: Some types of flooring can be installed directly on top of the subfloor, such as vinyl flooring. Other types need a middle layer, called underlayment, such as laminate,carpet and tile.
Is underlayment necessary?
Underlayment is not optional. If your laminate planks don’t have it already attached, we recommend that you buy rolls of underlayment on which to install your laminate floor.
What do you put between subfloor and underlayment?
Quote from the video:
Quote from Youtube video: I prefer to do 3/4 inch plywood because it adds strength.
Can you double layer subfloor?
AdvanTech® may be installed in 2-layers if the first layer is installed like a subfloor and the second layer is installed like an underlayment. Prior to installing the second layer, the first layer must be fully installed over the floor framing and the structure needs to be dried-in.
Can I go over old subfloor?
One of the benefits of removing the old flooring is it allows you the chance to fix any loose subflooring or squeaks by re-securing the main subfloor to the floor joists prior to installing the new flooring. With all that being said though the answer is YES you can install New Wood Flooring over the old.
How many layers of plywood do you need for a subfloor?
If you are using plywood for your subfloor, you should use a minimum of one layer that is between ¾” and ⅝” thick. This thickness will suffice for most floors; however, codes will vary and a second layer is a good idea if your floor covering is going to be a heavy material like ceramic tiles or natural stone.
Can I use screws for plywood underlayment?
Never use adhesive on the sub-floor to attach the plywood underlayment. Instead, fasten the plywood underlayment panels with staples, ring-shank nails or screws.
Should I glue underlayment to subfloor?
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.
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.
How do I attach underlayment to subfloor?
Most flooring underlayment is installed floating on top of your subfloor. Installers usually lay the underlayment on the floor and start installing the laminate flooring on top. There is no fastening the underlayment to the subfloor.
Is it better to screw or nail subfloor?
Ideally, nail down your subfloor using corrosion-resistant nails that will securely hold it in place and last a long time. Screws are a great alternative that you can easily remove, but they are not as sturdy. Screws are superior in terms of reducing floor squeaks, but the installation is slower.
How do you fasten underlayment for plywood?
When installed with staples, the underlayment sheets are fastened every 2 inches along the edges of the sheet and every 4 inches in the field area. Screws and nails may be spaced farther apart. Sheets can be butted together (just touching, not forced tightly together) or they can be gapped about 1/8 inch, or so.
What size screws 3/4 plywood subfloor?
The proper steel screw sizes for securing 3/4-inch plywood to the floor joists are #8, #10 and #12 screws. The number refers to the thickness of the screw. Each is available in lengths from 1 1/4 to 3 inches. Typically, the 3-inch variety is used to secure plywood subfloors.
How far apart should nails be on subfloor?
Generally, nails (6d ring or screw shank, or 8d common) should be spaced 6 inches on center along supported panel edges and 12 inches on center on the panels’ interior supports, or as specified on the construction drawings.
Which way do you lay plywood subfloor?
Install plywood underlayment smooth side up. To avoid damage to the surface, install underlayment immediately before laying the finish flooring.
Do you need tongue and groove for subfloor?
For subflooring, you use tongue and groove plywood. The tongue and groove are only along the 8 foot edges. On the four foot edges, your seams will fall on joist tops, so no need for tongue and groove. But to start off, we will need to remove the tongue so the plywood is tight with the exterior ICF walls.
