Is CDX Plywood Fire Rated?

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..

Does Home Depot sell fire rated plywood?

CDX 5-Ply Interior Fire-Rated Fir Pressure-Treated Plywood-97874 – The Home Depot.

Is fire rated plywood waterproof?

Fire Treated Plywood. Fire treated plywood is specially treated with chemicals that provide a physical barrier to flame spread. … Certain plywoods are also graded “Exterior” which gives it both a fire retardant rating and a treatment to prevent the fire retardant chemicals from leaching out in wet conditions.

Is CDX plywood rated for outdoor use?

CDX is the most common exterior plywood grade. … Appearance stamps on plywood range from cabinet-grade (A) to construction grade (C and D). Exterior plywood carries an X stamp, which identifies it as suitable for use outdoors. Beside CDX, you can also find better grades, such as ABX, ACX and even BCX.

Is plywood cheaper than drywall?

Plywood is considerably more expensive than drywall, especially if you are using cabinet grade hardwood plywood. This is a large part of what has kept plywood from being used more consistently as an interior wall treatment. The second advantage is that drywall is considerably easier to cut and install than plywood.

What is the cheapest type of plywood?

D-grade plywood: The cheapest type of plywood veneers, these sheets typically haven’t been repaired. The flaws can be slightly larger and the knots in this type of plywood can be up to 2.5 inches in diameter. CDX: CDX-grade plywood is typically inexpensive material, as it is made of the two lowest grades (C and D).

Can CDX plywood get wet?

CDX plywood sheets exposed to the elements can withstand exposure to rain or high moisture conditions, for a limited time, without compromising structural integrity. This plywood type is not waterproof or pressure treated, so it does absorb water.

Is plywood fire rated?

Plywood and OSB (oriented strand board) structural panels are real wood, a natural insulator, and therefore provide good protection against heat loss and condensation. Tests conducted in 1974 by Underwriters Laboratories showed flame-spread ratings from 75 to 200 for common plywood grades. …

What is the difference between CDX and plywood?

CDX is a type of plywood. Basically, plywoods are thin veneer sheets that are glued and held together with linking plies. … If so, it therefore, means CDX has the most number of knots and defects, making it a lower grade plywood. C in CDX means one side of the plywood is of grade C, and the other is of grade D.

What is the difference between CCX and CDX plywood?

Often, when people are looking for CCX plywood, they are directed by the lumberyard to CDX plywood, which is the standard grade of plywood used for sheathing on homes. The difference in CCX and CDX is only on the back side, which is not normally visible in construction.

How can I waterproof plywood?

Many types of waterproofing are available to protect plywood. The most common type sold in home improvement stores is the paint-on or spray-on type of waterproofing. These typically are liquid latex substances applied to the surface of the plywood while wet. Once they dry, they form a plastic, protective layer.

Do they make 5/8 plywood?

5/8 in. x 4 ft. x 8 ft. BCX Pressure-Treated Plywood-273562 – The Home Depot.

Is plywood good for soundproofing?

Plywood offers some soundproofing characteristics, but not as good as drywall. Sound travels through wood very easily and when used by itself, plywood does not make for a good soundproofing material. … Overall, plywood can be used to help with soundproofing but will not provide as much soundproofing as drywall will.

Is there fire proof paint?

Overview. FlameOFF® Fire Barrier Paint is an intumescent paint that can be applied to most building materials. Structural steel is the most commonly protected material, but protection can include other materials such as sheet metal, sheetrock, composite panels and interior woods.

Is OSB fire rated?

An engineered wood product, fire-rated OSB sheathing such as LP FlameBlock sheathing eliminates a layer of gypsum by combining an ignition-resistant, cementitious coating with a layer of OSB. It carries an Exposure 1 classification, which means it can withstand normal exposure to moisture during construction.

Can I use CDX for subfloor?

OSB and CDX subfloors come in tongue and groove. It’s ideal for subflooring, because it prevents the edges of the plywood from moving and squeaking after insulation. Construction adhesive is used to better seal the tongue-and-groove joint.

Can I use plywood instead of Sheetrock?

Plywood is a viable alternative to drywall for walls and ceilings. If you are planning on redoing your walls or ceilings, the typical materials you’ll use include Sheetrock or finished plywood. Each has its benefits as a building material and in some cases, finished plywood is the better alternative.

Is there anything cheaper than drywall?

First, plywood is inexpensive and sturdy, as well as easier to install than drywall. … Plywood can even be used to create a “faux” shiplap wall at a fraction of the cost by cutting plywood into planks and installing them on the wall.