What kind of plywood do you use for a mobile home floor
Mia Lopez
Updated on April 14, 2026
The most recommended subfloor material is 5/8″ plywood. If you can afford water resistant marine plywood for your kitchen, laundry, and bath that would be a good idea.
What kind of wood should I use for a mobile home floor?
The mobile home’s wood frame is usually made of 2X6, 2X8 or 2X10 floor joists. Then plywood, particleboard or OSB is placed on top of the wood frame to create the subfloor, also called the decking.
What kind of plywood do you use for subfloor?
Standard plywood can be used for subfloors, but a better material is 3/4-inch tongue-and-groove plywood subflooring. The tongue-and-groove edges interlock to resist movement along the panel edges and create an overall stiffer floor.
What size plywood goes in a mobile home floor?
Measure Your Subfloor Thickness Most subfloors are either 3/4″ or 5/8″ thick. You will use the measurement to set your circular saw to the proper height. One of the most tedious parts of replacing subflooring in mobile homes is the removal of the original sub-flooring.What thickness of plywood should I use for a floor?
The recommended thickness of the plywood subfloor is governed by the spacing of the joists. Some experts suggest that 15/32-inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less, but slightly thicker 3/4-inch plywood should be used for joists spaced further apart.
Can you use plywood as flooring?
Plywood floors are suitable for any room where you’d otherwise install hardwood, though kitchens and bathrooms are less desirable since frequent water spills are likely. … A 1½-in thick, 4-foot by 8-foot sheet of CDX plywood (the kind used in subflooring) sells for around $15.
Why do mobile home floors get soft?
Sagging mobile home floors: are usually a result of water damage in mobile homes with particle board flooring that doesn’t hold up well when it gets wet. Moisture Barriers Stop moisture from developing directly on the mobile home floor boards and will not allow the floors to rot.
What is mobile home bottom board?
The black material enclosing the base of a mobile home is known by several names: bottom board, belly board or paper, black board, etc. Typically, the material used is asphalt-impregnated fiberboard or fiberglass, cloth or heavy tar paper and woven polyethylene. All serve the same purpose: Prevent moisture infiltration.What is the best subfloor for a mobile home?
The most recommended subfloor material is 5/8″ plywood. If you can afford water resistant marine plywood for your kitchen, laundry, and bath that would be a good idea.
Is it better to use OSB or plywood for subfloor?The National Tile Contractors Association and the Resilient Floor Covering Institute both recommend plywood for subflooring and underlayment, because it doesn’t have the risk of swollen edges that OSB does. Plywood also has a slight advantage in stiffness, which means that subflooring panels need not be quite as thick.
Article first time published onIs it OK to use treated plywood for subfloor?
There’s no need to worry about making treated wood safer that is completely covered in other materials and hidden from access, such as subflooring. Pressure treated wood doesn’t release any gases or particulates that could harm you and your family.
What is best material for subfloor?
Plywood is considered the most popular material used for subflooring, it has been used since the 1950s and remains one of the top choices for contractors. Standard plywood works perfectly fine as a subflooring material, but the best option is ¾” tongue-and-groove plywood subflooring.
Is 12mm plywood OK for flooring?
Due to our 12mm Hardwood Plywood being a structural product – it can be used in sheds for roofing and flooring too. An interesting application for 12mm Ply is Plywood pegboards – a quirky addition to any home, plus they’re super easy to build.
What is Floor grade plywood?
Product Description. Ultipro SC117 Flooring Grade Plywood is a plantation grown temperate hardwood suitable for non-structural use in most moisture resistant and exterior flooring overlay applications. The plywood is FSC certified and sourced from well managed credibly certified forests.
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.
Can I put new subfloor 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 far apart are mobile home floor joists?
Walls are built using wood boards called studs. Studs are the vertical boards and are normally 2″ x 4″ and spaced every 16″ in a manufactured home. That’s what the term 16″ OC, or ‘on center’ means in construction lingo. Better quality manufactured homes will have 2×6 studs and more affordable homes will have 2x3s.
Can you use 1/4 inch plywood flooring?
Most underlayment-approved plywood is at least 11/32 inches, the standard recommendation. Some professionals, however, will use plywood as thin as 1/4 inch for resilient flooring if the subfloor is in particularly good condition.
Is birch plywood good for flooring?
They have used a high quality 5 ply birch plywood and, while you still wouldn’t want to lay any type of plywood in a high traffic area, it works really well in a bedroom. … Lots of sanding and three coast of polyurethane make for a beautifully finished plywood flooring.
How much does a sheet of plywood cost?
ThicknessTypePrice1/2″Sandeply Hardwood$33.873/4″Sandeply Hardwood$43.971/4″Oak Plywood$25.971/2″Oak Plywood$42.97
How much does it cost to replace subfloor in a mobile home?
Cost to Replace Subfloor in a Mobile Home Expect to pay between $2 to $2.75 per square foot for both labor and materials. Since the job is specialized, it’s best to hire a professional to complete the work.
Can you put laminate flooring in a mobile home?
Things You’ll Need A mobile home is a small enough space that you can easily tackle many do-it-yourself projects, such as installing laminate flooring. Flooring options with laminate come in many designs, so you can choose the style that best accents your décor.
Do I need vapor barrier under my mobile home?
Moist ground and standing water under a mobile home generate water vapor that accumulates in the crawlspace and can rise up into the home, slowly damaging the structure over time. … HUD and manufacturers both require new homes to have a vapor barrier if it will be enclosed with skirting or other materials.
Can you spray foam the underside of a mobile home?
Open cell spray foam sprayed directly onto the skirting and in the rim joist is the best route under your mobile home. This method is best because the underside of the floor has mechanicals in most cases that are running. It also seals out the outside air keeping your floors warm and energy bills down.
What are subfloors?
The subfloor is the bottom most structure of the floor. It provides a flat and stable surface and supports the actual floor. … Underlayments help to provide extra support to the actual floor. While there are different types of subfloors, the most common type is made from plywood.
What is CDX plywood?
CDX Plywood is used primarily by contractors to build exterior walls and roofs. CDX plywood has one side veneer grade “C” and one side veneer grade “D”. The two are bonded together with glue which can withstand a little moisture. The APA would recognize CDX Grade Plywood as C-D Exposure 1 plywood.
What is RTD plywood used for?
Exterior panels sometimes referred to as RTD sheathing, are designed to hold up to constant moisture. They are completely waterproof and are great for installing in places where you expect consistent exposure to moisture. This RTD sheathing is great for roofs and other outdoor applications.
What is the difference between sheathing and sanded plywood?
Sanded plywood features face and back (top and bottom) plies that are sanded in the manufacturing process. It is typically used where it will be seen such as for cabinets, shelves and paneling. … Plywood sheathing or structural plywood is designed for permanent structures.
Is Spruce plywood good for subfloor?
All wood subfloors must meet national and local building code guidelines. 1) PLYWOOD: Use only American Plywood Association (APA) underlayment grade plywood, minimum ¼”thickness. … Manufacturer-certified poplar, birch and spruce plywood underlayment with a fully sanded face and exterior glue can also be used.
Why is treated lumber cheaper than untreated?
Affordability. Pressure-treated wood is notably cheaper than cedar, redwood, and other types of wood. And, because of its durability, you’re much less likely to experience a need for costly repairs in the future. It is a great choice for those operating on a smaller budget.
How do you waterproof a subfloor?
Caulk any seams where two pieces of plywood are butted together. Dab caulk onto nail or screw heads to seal the potential leak point they provide. Caulk any splits in the wood or any other areas that may provide a point for water to seep under the subfloor.