Can I use 2 layers of plywood for subfloor?
Whenever you use two layers of material to build up to the required minimum thickness of subfloor they both need to be nailed to the joists. If you installed the second layer as you described in your answer you would not have a subfloor that passed code (at least in the US).
Can I add plywood to subfloor?
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.
How do you install 1/2 plywood underlayment?
Quote from the video:
Quote from Youtube video: Stand on each panel during fastening to ensure full contact with the subfloor fasten. The 8-foot edge two inches on Center. And a half inch from the panel edge.
How many layers of subfloor should you have?
The four layers that make up the wood floor system consist of; the Joists, Subfloor, Underlayment, and Floor Covering.
Can you double up underlayment?
Underlayment is manufactured and meant to be used as only a single layer to allow your floor to be balanced and float properly. If you install any additional underlayment, the base for your flooring will end up being too soft and could jeopardize the integrity of the locking system.
How do you double up plywood?
Quote from the video:
Quote from Youtube video: Two pieces of 18 millimeter ply to create a really solid desk top gluing or laminating two bits of plywood. Together is almost as easy as it sounds the only slight trick is consistent.
How do you install a double layer subfloor?
Quote from the video:
Quote from Youtube video: The second layer will be laid perpendicular to the first. Beginning at the back of the house and working toward the front spreading into the breezeway as they work multiple rows of sheathing. Down the
What thickness subfloor is recommended?
The spacing of the joists governs the recommended thickness of the plywood subfloor. Some experts suggest that 15/32-inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less, but you should use slightly thicker 3/4-inch plywood for joists spaced further apart.
How thick should floor plywood be?
The minimum thickness of plywood for subflooring is about 5/8 inch. Since it does not hold fasteners as well as plywood, OSB must be a little thicker, or at least 23/32 inch.
What do you put between layers of subfloor?
Adhesive will help you here, as the subfloor plywood will have voids in spots that will not hold a fastener. I use the term “underlayment” to mean a layer above the subfloor, but not the finished floor. In your case, you need the underlayment to prevent deflection along the edges of the subfloor between the joists.
Can you lay underlay on top of old underlay?
With time and wear, underlay will become compressed and here at Leader Floors, we recommend using new underlay each time you change your flooring. Adding new underlay on top of the old underlay will impact the performance of the new underlay and can be harmful to your new flooring.
Should you stagger subfloor?
Staggering a Subfloor
Stability is more important than aesthetics when laying a subfloor, so it isn’t important to make the pattern random. When laying the plywood, install a full sheet along one edge of the floor, then start the next row with a half sheet and use a full sheet for the third row.
Does plywood need an expansion gap?
Unlike laminate floors which float over an existing floor and have expansion gaps, plywood is usually screwed or nailed into position and expansion gaps are not necessary. You should fit the plywood sheets tight together , but always leave a 10mm expansion gap at the perimeter.
Should I nail or screw 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 stagger plywood subfloor?
Quote from the video:
Quote from Youtube video: And the panel should be staggered at least two supports. The ends of the panel should occur at approximately. The center of the support with a minimum bearing of 1/2 inch.
Does underlayment need to be staggered?
Never line up the underlayment seams with the subfloor seams; stagger the underlayment at least 2 inches with the subfloor seams. This adds to the stability of the floor and helps to defeat the broadcasting of lines through the resilient floors. 5.
Should I glue plywood to subfloor?
The answer: Glue. Although using a subfloor adhesive (or subfloor glue) is not required by code, it is a standard practice that can help prevent floor squeaks by reducing the chance for movement at the panel-to-joist connection. A quality subfloor adhesive will also increase the overall stiffness of the floor.
