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Shiplap Siding

Classic, tight-edge shiplap siding is a versatile option for anyone looking for a sleek, no-fuss siding. Marks Lumber’s shiplap boasts a unique look with our renowned circle sawn texture creating contrast and texture on an otherwise clean, crisp siding. Install vertically or horizontally, or create a mixture of both orientations for your perfect, custom home.

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Shiplap can be used for a variety of applications, including siding, soffit, paneling, or wainscoting. Shiplap siding is made using a rabbet joint, creating a highly durable exterior shell.

Apply Lifetime Wood Treatment for easy maintenance and added protection.


Surfaces: Siding, soffit, walls, and ceilings

Texture: Circle Sawn; Band Sawn (Special Order Only)

Finish: Unfinished

Grade: #2 and Better; Rustic

Thickness: ¾”

Width: 6” or 8”

Net Coverage: 5” or 6 ¾”

Length: Sold as random length 8’-16’

Moisture Content: Kiln dried to approx. 12%

Profile: Tight, square edge joint (no reveal); Relief marks on 8” width


We do not. Our shiplap is a standard tight-edge shiplap, with no reveal. You can create a fine-line shiplap yourself by using a spacer to help slightly bump the boards apart.

Circle sawn products are still a fully rough texture. Our appearance grade, circle sawn products can be stain ready with basic preparation.

It is important to make sure wood is protected on all sides and edges, whether or not they will be seen. This provides extra protection to help avoid cupping and splitting, and also ensures there will be no unfinished spots peeking through when the wood inevitably shrinks and swells.

While there are many great products you can use that will provide protection for your wood siding, we recommend using Lifetime Wood Treatment for exterior projects. Lifetime is a one-and-done weathering treatment that requires minimal maintenance and a beautiful barn wood-like finish.

Making sure your wood siding is clean is one of the best things you can do to help extend the life of the product. We recommend using Perma-Chink’s Log Wash once a year to protect and maintain the natural beauty of the wood.

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Lifetime Wood Treatment

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