Plywood and OSB: Weight and Thickness Charts

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Weight of Plywood and OSB

And Other Engineered Wood Panels

Roof Online Staff

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Stacks of 4’ x 8’ softwood plywood panels, 15/32-inch thick. Each sheet weighs about 40 pounds, so each one of those stacks weighs almost a ton and a half.

Plywood and OSB Weight Factors

The weight of plywood and OSB depends partly on the amount and the type of the adhesives, primers, and sealants used to make it. Different types of plywood will use different amounts of these substances, and they are very heavy relative to wood.

Another weight factor is the wood species used to make the panel. Different wood species have naturally different densities, and this can make a big difference in the weight of the finished product.

These variations can result in weight differences of up to 20% for plywood and OSB panels with the exact same dimensions and product description from one manufacturer to the next, or even for different batches of the same product from the same manufacturer.

What is Plywood Made of?

Plywood is composed of approximately 92% – 97% wood, with the remainder made up by primers, sealants, and adhesives such as phenol formaldehyde resin.

Other engineered wood panel types, such as particle board or OSB, contain a much higher percentage of adhesive resin, and since these resins are heavier than wood, these panels tend to be significantly heavier than plywood.

Weights of Different Types of Plywood

What is the APA Standard Weight for Plywood?

APA Plywood Standard: The Engineered Wood Association (formerly the American Plywood Association) provides standard notional plywood weights for use in determining expected dead loads when performing structural engineering calculations.

Softwood plywood is typically used as structural plywood (roof decking, sheathing, flooring).

The APA Standard weights are not the weights of actual products and tend to be somewhat heavier than the weights of any real softwood plywood you will find.

A 4’ x 8’ sheet of 1/2-inch APA Standard Plywood would weigh 48 lbs.

How Much Does Baltic Birch Plywood Weigh?

Baltic Birch Plywood: This is a high-quality plywood produced in Russia and other areas around the Baltic Sea.

It is made up entirely of birch wood, so unlike some other hardwood plywood, it does not use softwood for the inner plies, and the inner plies are void-free, increasing its stability. Used mostly for furniture-making and cabinetry.

A typical 4’ x 8’ sheet of 1/2-inch Baltic Birch Plywood weighs around 55 lbs.

See Baltic Birch Plywood at the Home Depot.*

How Much Does Hardwood Plywood Weigh?

Hardwood Plywood: At least the front and back veneers (outer plies) of this plywood will be made of a hardwood species such as maple or oak.

Although the inner plies may also be hardwood, more often they will be made of a cheaper softwood species. The hardwood veneers improve strength, stability, and impact-resistance, and it’s commonly used in applications where these qualities are desired, like flooring or wall paneling.

A typical 4’ x 8’ sheet of 1/2-inch Hardwood Plywood weighs around 48 lbs.

See Hardwood Plywood at the Home Depot.*

How Much Does Marine Plywood Weigh?

Marine Plywood: Despite its name, this is not a waterproof plywood. It is manufactured using water-resistant adhesive and very high quality outer plies which help prevent moisture from penetrating the panel.

It is designed to be used where the material will be subjected to higher-than-normal amounts of moisture, such as in coastal environments.

A typical 4’ x 8’ sheet of 1/2-inch Marine Plywood weighs around 51 lbs.

How Much Does Pressure-Treated Plywood Weigh?

Pressure-Treated Plywood: This is generally a softwood plywood that has been pressure-treated to help it resist decay caused by fungus, insects, and other organisms.

Southern yellow pine is particularly well-suited for pressure treating, and most pressure-treated plywood will be pine. Special waterproof adhesives are used so that the plywood can withstand the pressure-treating process without falling apart.

Because of the adhesive and the fact that southern yellow pine is much heavier than other wood species used in construction, pressure-treated plywood tends to be a heavy plywood, even after drying out after the pressure-treating process. Before drying out, of course, it can be much, much heavier.

A typical 4’ x 8’ sheet of 1/2-inch Pressure-Treated Plywood weighs around 60 lbs.

See Pressure-Treated Plywood at the Home Depot.*

How Much Does Softwood Plywood Weigh?

Softwood Plywood: This is the type of plywood most commonly used in construction.

Structural plywood is usually softwood plywood. It is used for roof sheathing, wall sheathing, subfloors, and more.

Softwood plywood comes from coniferous trees, primarily fir, pine, or spruce. It is generally the lightest type of wood panel, due to the light weight of the wood species used, the (relatively) low amount of adhesive used in the manufacturing process, and the presence of unfilled voids within the inner plies.

It is normally the cheapest plywood. CDX plywood is a grade of softwood plywood.

A typical 4’ x 8’ sheet of 1/2-inch Softwood Plywood weighs around 43 lbs.

See Softwood Plywood at the Home Depot.*

How Much Does MDF Weigh?

MDF: Medium Density Fiberboard is produced from wood scraps left over from other wood product manufacturing activities.

This waste wood can be either hardwood or softwood. The scraps are broken down into very small wood fibers, which are combined with wax and adhesive resin to form the MDF panels.

MDF does not handle moisture well, and is normally only used for interior applications, such as flooring or furniture.

Because of the high resin content, it tends to be one of the heaviest engineered wood panels.

A typical 4’ x 8’ sheet of 1/2-inch MDF weighs around 69 lbs.

See MDF at the Home Depot.*

How Much does MDO Weigh?

MDO: Medium Density Overlay is a type of exterior plywood specifically designed to be painted easily, holding the paint better, and looking better after painting, than other types of engineered wood panels.

The wood plies are typically softwood, and a thick, smooth layer (the overlay) of a highly water-resistant resin is applied to one or both sides of the panel.

A typical 4’ x 8’ sheet of 1/2-inch MDO weighs around 48 lbs.

How Much Does Particle Board Weigh?

Particle Board: The product generally known as “particle board” is similar to MDF.

It is made with similar manufacturing techniques, but the end product is cheaper, weaker, and of lower density. It is also called LDF (low density fiberboard).

A typical 4’ x 8’ sheet of 1/2-inch Particle Board weighs around 66 lbs.

How Much Does OSB Weigh?

OSB: Oriented Strand Board is plywood’s biggest competitor as a structural wood panel in North America.

In large-scale commercial construction, it has largely replaced softwood plywood in wall sheathing, roof sheathing, and subflooring applications. This, of course, is due to the fact that a sheet of OSB costs about 20% less than the equivalent sheet of plywood.

OSB is made by breaking down wood into small strips, or “strands”, up to 6 inches long, combining these strands with wax and adhesive resin under pressure and heat to form layers.

The strands in each layer are all generally “oriented” in the same direction. These layers are combined to form OSB panels of the desired panel thickness.

The wood strands in the outer layers are oriented one way, and the strands in the interior layers are oriented the other way, which increases panel strength.

OSB is manufactured in a slightly different range of thicknesses than plywood.

A typical 4′ x 8′ sheet of 1/2-inch OSB weighs around 54 lbs.

See OSB at the Home Depot.*

Ask the Lumber Company!

The values given in the following tables are meant to provide a general idea of typical engineered wood panel weights, and should not be used if precise values are needed for critical engineering calculations.

When precision is necessary, always refer to the specification sheet for the actual, specific product you intend to use, or contact the technical department of the panel manufacturer.

About Our Plywood Weight Charts

The following tables provide typical weights (dead load, self-weight) for plywood, OSB, and other engineered wood panels.

We provide metric and US standard weights for standard engineered wood panels of all thicknesses, weights per square foot, and weights per square meter.

The weights we give were calculated using the product data sheets or manufacturer specifications of actual, specific wood panel products, and in most cases our weights are the average of product weights from more than one manufacturer.

Table of Plywood Weights: Pounds per Square Foot

Weight of Plywood, OSB, and Other Engineered Wood Panels
In Pounds per Square Foot
Panel Type Weight per Square Foot by Thickness
1/4 inch 11/32″ 3/8″ 15/32″ 1/2 inch 19/32″ 5/8″ 23/32″ 3/4 inch 7/8″ 1″ 1-1/8″
APA Plywood Standard 0.80 lbs 1.00 1.10 1.40 1.50 1.70 1.80 2.10 2.20 2.60 3.00 3.30
Baltic Birch Plywood 0.92 lbs 1.15 1.26 1.61 1.72 1.95 2.06 2.41 2.54 2.98 3.44 3.78
Hardwood Plywood 0.80 lbs 1.00 1.10 1.40 1.50 1.70 1.80 2.10 2.20 2.60 3.00 3.30
Marine Plywood 0.85 lbs 1.06 1.17 1.49 1.60 1.81 1.92 2.23 2.34 2.77 3.19 3.51
Pressure-Treated Plywood 1.00 lbs 1.25 1.37 1.75 1.87 2.12 2.24 2.62 2.74 3.24 3.74 4.11
Softwood Plywood 0.72 lbs 0.90 0.99 1.26 1.35 1.53 1.62 1.89 1.98 2.34 2.70 2.97
MDF 1.15 lbs 1.44 1.58 2.01 2.16 2.44 2.59 3.02 3.16 3.74 4.31 4.74
MDO 0.80 lbs 1.00 1.10 1.40 1.50 1.70 1.80 2.10 2.20 2.60 3.00 3.30
Particle Board 1.08 lbs 1.35 1.49 1.90 2.03 2.30 2.44 2.84 2.98 3.52 4.06 4.47
Weight per Square Foot by Thickness
1/4 inch 5/16″ 3/8″ 7/16″ 15/32″ 1/2 inch 19/32″ 5/8″ 23/32″ 3/4″ 7/8″ 1 inch
OSB 0.9 lbs 1.10 1.20 1.40 1.50 1.70 2.00 2.10 2.40 2.50 2.90 3.30

Table of Plywood Weights: Pounds per Standard Sheet

Weight of Plywood, OSB, and Other Engineered Wood Panels
In Pounds per Standard Sheet (4 ft x 8 ft)
Panel Type Weight per Standard Sheet by Thickness
1/4 inch 11/32″ 3/8″ 15/32″ 1/2 inch 19/32″ 5/8″ 23/32″ 3/4 inch 7/8″ 1″ 1-1/8″
APA Plywood Standard 26 lbs 32 35 45 48 54 58 67 70 83 96 106
Baltic Birch Plywood 29 lbs 37 40 52 55 62 66 77 81 95 110 121
Hardwood Plywood 26 lbs 32 35 45 48 54 58 67 70 83 96 106
Marine Plywood 27 lbs 34 37 48 51 58 61 71 75 89 102 112
Pressure-Treated Plywood 32 lbs 40 44 56 60 68 72 84 88 104 120 132
Softwood Plywood 23 lbs 29 32 40 43 49 52 60 63 75 86 95
MDF 37 lbs 46 51 64 69 78 83 97 101 120 138 152
MDO 26 lbs 32 35 45 48 54 58 67 70 83 96 106
Particle Board 35 lbs 43 48 61 65 74 78 91 95 113 130 143
Weight per Standard Sheet by Thickness
1/4 inch 5/16″ 3/8″ 7/16″ 15/32″ 1/2 inch 19/32″ 5/8″ 23/32″ 3/4″ 7/8″ 1 inch
OSB 29 lbs 35 38 45 48 54 64 67 77 80 93 106

Table of Plywood Weights: Kilograms per Square Meter

Weight of Plywood, OSB, and Other Engineered Wood Panels
In Kilograms per Square Meter
Panel Type Weight per Square Meter by Thickness
6 mm 9 mm 12 mm 15 mm 18 mm 21 mm 24 mm 25 mm 28 mm 30 mm
Baltic Birch Plywood 4.20 kg 5.85 7.80 9.75 11.67 13.65 15.61 16.25 18.20 19.50
Hardwood Plywood 3.65 kg 5.09 6.78 8.48 10.15 11.87 13.57 14.13 15.83 16.96
Marine Plywood 3.87 kg 5.40 7.19 8.99 10.76 12.58 14.38 14.98 16.78 17.98
Pressure-Treated Plywood 4.56 kg 6.36 8.48 10.60 12.69 14.84 16.96 17.66 19.79 21.20
Softwood Plywood 3.29 kg 4.58 6.10 7.63 9.14 10.68 12.21 12.72 14.25 15.26
MDF 5.26 kg 7.33 9.76 12.21 14.62 17.09 19.54 20.35 22.80 24.42
MDO 3.65 kg 5.09 6.78 8.48 10.15 11.87 13.57 14.13 15.83 16.96
OSB 4.15 kg 5.75 7.66 9.58 11.47 13.41 15.33 15.97 17.89 19.16
Particle Board 4.93 kg 6.87 9.15 11.45 13.70 16.02 18.32 19.08 21.37 22.90

Table of Plywood Weights: Kilograms per Standard Sheet

Weight of Plywood, OSB, and Other Engineered Wood Panels
In Kilograms per Standard Sheet (1220 mm x 2440 mm)
Panel Type Weight per Standard Sheet by Thickness
6 mm 9 mm 12 mm 15 mm 18 mm 21 mm 24 mm 25 mm 28 mm 30 mm
Baltic Birch Plywood 12.50 kg 17.41 23.22 29.02 34.74 40.63 46.47 48.37 54.18 58.05
Hardwood Plywood 10.87 kg 15.15 20.18 25.24 30.21 35.33 40.40 42.06 47.12 50.49
Marine Plywood 11.52 kg 16.07 21.40 26.76 32.03 37.45 42.81 44.59 49.95 53.52
Pressure-Treated Plywood 13.57 kg 18.93 25.24 31.55 37.78 44.18 50.49 52.57 58.91 63.11
Softwood Plywood 9.79 kg 13.63 18.16 22.71 27.21 31.79 36.35 37.86 42.42 45.43
MDF 15.66 kg 21.82 29.05 36.35 43.52 50.87 58.17 60.58 67.87 72.69
MDO 10.87 kg 15.15 20.18 25.24 30.21 35.33 40.40 42.06 47.12 50.49
OSB 12.35 kg 17.12 22.80 28.52 34.14 39.92 45.63 47.54 53.25 57.04
Particle Board 14.68 kg 20.45 27.24 34.08 40.78 47.69 54.53 56.80 63.61 68.17
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