At a Glance

Square

Unfinished

Softwood

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Severe Weather 1/2-in x 4-ft x 8-ft Pressure Treated Douglas Fir CDX Square Plywood Sheathing

Name: Severe Weather 1/2-in x 4-ft x 8-ft Pressure Treated Douglas Fir CDX Square Plywood Sheathing
Brand: Severe Weather
SKU: 50017278
Rating: 3.9 (98 reviews)

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3.9

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Manufactured with C grade veneer on face, D grade veneer on back
Pressure treated Douglas fir for exterior Ground Contact use
Treatment meets AWPA (American Wood Protection Association) standards and is building code compliant (IRC and IBC)
Lifetime limited warranty that protects against damage by fungal decay or termite infestation that makes the wood structurally unfit for the application for which it was used
For optimal performance, allow treated wood to dry thoroughly before applying a stain, paint or sealant coating
Hot-dipped galvanized or stainless-steel fasteners and fittings are recommended, and not suitable for direct contact with aluminum products
Safe when used as directed by the manufacturer's warranty

General
Pressure Treatment Type	Copper azole (CA)	Paintable	Yes
Hardwood/Softwood	Softwood	Wood Species	Douglas fir
Veneer Grade	CDX	Sub Type	Sheathing
Finish	Unfinished	Green or Kiln-Dried	Green
Type	Plywood	Edge Profile	Square

Dimensions
Common Measurement (W x L)	4-ft x 8-ft	Common Thickness Measurement	1/2-in
Industry Standard Min Thickness (Inches)	0.46	Common Width Measurement	4-ft
Industry Standard Minimum Width (Feet)	3.9	Actual Length (Feet)	7.989
Industry Standard Minimum Length (Feet)	8	Actual Width (Feet)	3.989
Common Length Measurement	8-ft	Actual Thickness (Inches)	0.469

Features
Laminated	No	Fire Resistant	No
Marine Grade	No	Pressure Treated	Yes
Sanded	No	Weather Exposure	Exposure 1
Project Panel	No	Stainable	Yes
Water Resistant	Yes	Lowe's Exclusive	No

Certifications
CA Residents: Prop 65 Warning(s)	No	CARB Compliant	No
SFI Certification	No	No Added Formaldehyde (NAF) Compliant	No

Warranty
Warranty	Limited lifetime

Compatibility
Product Standards	Non-structural rated	For Use with Floors	Yes
Performance Category	1/2 CAT	For Use with Walls	Yes
For Use with Roofs	Yes	For Use with Cabinet/Bookcases	No
For Use with Panel System	No

Miscellaneous
UNSPSC	30103600

Check out the Best Selling Plywood & Sheathing on Lowes.com

Review

3.9 out of 5

98 Reviews

71% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers praise the pressure-treated plywood for exceptional durability and weather resistance in outdoor applications like trailer decking, shed flooring, and garden planters, noting it withstands sun, rain, and snow when properly sealed. Many highlight its cost-effectiveness compared to composite materials. However, some report inconsistent surface quality with uneven grain and excessive knots requiring careful selection. A few received damaged or moldy panels. Despite these concerns, most customers find it performs reliably for demanding outdoor projects when purchased in-store.

Customer review summary generated by AI, including incentivized reviews.

98 Customer Reviews

Sort By

Great Service

Would Recommend

Material was good, but the service was great. I had multiple cuts that I needed and the associate was very skilled with such a difficult saw and cut them perfectly with a great attitude. It was the employee that made this rating a 5 star.

SteveAugust 18, 2026
Verified Purchaser

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Rotten wood was delivered

Would Not Recommend

I was delivered rotten moldy wood. I called the store and they were very rude short and a received attitude and no solution from the Covina storen. They told me they could just cancel and they didn’t care for my business. They told me they’d pick it up next business day when I called corporate, they told me it was scheduled for another two or three days. I don’t understand how this would even pass inspection. and they were all cracked. I had to go buy them at their competition. I showed them the...

AliAugust 12, 2026
From 1_SLASH_2-in x 4-ft x 8-ft Pressure Treated Douglas Fir CDX Square Plywood Sheathing

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Treated plywood is great

Would Recommend

It was great that they sell treated plywood , worked great for me

Rahv488July 15, 2026
From 1_SLASH_2-in x 4-ft x 8-ft Pressure Treated Douglas Fir CDX Square Plywood Sheathing Verified Purchaser

Was this Review Helpful ?

Works for my current needs

Would Recommend

For a chicken coop door it is okay, anything else I wouldn’t car for the quality of the finish.

BoozhooApril 20, 2026
From 1_SLASH_2-in x 4-ft x 8-ft Pressure Treated Douglas Fir CDX Square Plywood Sheathing Verified Purchaser

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Accurate measurement

Would Recommend

Cut nicely

MarkApril 16, 2026
From 1_SLASH_2-in x 4-ft x 8-ft Pressure Treated Douglas Fir CDX Square Plywood Sheathing Verified Purchaser

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11 Questions

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Can this pressure-treated plywood hold up to contact with ground?

Could this be used on the deck of a pontoon boat

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COMPARE PRODUCTS

		Name	Current Item Severe Weather1/2-in x 4-ft x 8-ft Pressure Treated Douglas Fir CDX Square Plywood Sheathing
		Ratings	98
		Type	Plywood
		Weather Exposure	Exposure 1
		Actual Width (Feet)	3.989
1/2-in x 4-ft x 8-ft Radiata Pine ACX Square MDF (Medium-Density Fiberboard)	Severe Weather3/4-in x 4-ft x 8-ft Pressure Treated Douglas Fir CDX Square Plywood Sheathing	Severe Weather15/32-in x 4-ft x 8-ft Pressure Treated Southern Yellow Pine CDX Square Plywood Sheathing	3/4-in x 4-ft x 8-ft Southern Yellow Pine Square Sanded MDF (Medium-Density Fiberboard)	1/2-in x 4-ft x 8-ft Maple Square Sanded Plywood	Corry PRO-Panel3/4-in x 4-ft x 8-ft Square Sanded Plywood	AdvanTech23/32-in x 4-ft x 8-ft Southern Yellow Pine Rated Tongue and groove Sanded OSB Subfloor	Severe Weather23/32-in x 4-ft x 8-ft Pressure Treated Southern Yellow Pine CDX Square Plywood Sheathing	Severe Weather1/2-in x 4-ft x 8-ft Pressure Treated Douglas Fir CDX Square Plywood Sheathing
118	100	2099	328	142	398	497	2101	98
MDF (Medium-Density Fiberboard)	Plywood	Plywood	MDF (Medium-Density Fiberboard)	Plywood	Plywood	OSB	Plywood	Plywood
Exterior	Exposure 1	Exterior	Interior	Interior	Interior	Exposure 1	Exterior	Exterior
4	3.989	3.937	4	4.039	4	3.953	3.937	4