Can I use plastic lumber to build some Adirondack chairs for my cottage?

Can I use plastic lumber to build some Adirondack chairs for my cottage? It’s now time to replace the wooden chairs I made 20 years ago, and I’m interested in the rot resistance, weight and freedom from finishing that plastic lumber offers. Will this work? Is there a way to finish the cut ends so they match the surrounding surfaces?

Five years ago I wondered the same thing as I planned a swimming raft and outdoor table. And I can now answer with complete confidence that composite deck lumber is a great material for outdoor furniture.


‘Composite’ is the current term for plastic lumber because today’s versions are made from a 50-50 blend of wood fibers and plastic. This yields a better product than the all-plastic lumber that originally came to market. Composites are lighter, better looking, offer better foot traction and are easier to work than true plastic lumber.

Most composites are hollow extrusions, and that won’t do for building your chairs. What you really need is a solid composite that’s sized like wood lumber, and cuts, drills and routes like the real thing. You’ll find that fresh ends exposed during construction look just like the rest of the board. The only thing to keep in mind is strength. Composites aren’t as strong as wood, and they tend to bend over time if they’re not supported properly. Be sure to work extra supports into your design in load-bearing areas of your chairs. An extra cross member in the seat and back area will do just fine.

Learn More Every Saturday!

FREE weekly tips and advice to make your home work better, whether it’s a rural homestead or a place in the city.

Your subscription could not be saved. Please try again.
Your subscription has been successful.

Just want to say how much I enjoy your Saturday morning newsletters and website. The content is always excellent... - FL

Thanks so much for the terrific work you do, and the outstanding resource you provide. - KS

Your videos are outstanding! Very instructive, and animations and your speech really helps to get the messages! - DB

Baileylineroad is supported in part by advertising. If you can't see the ads below, please consider turning off your ad blocker when visiting our site, or subscribing to our newsletter. Thanks for visiting!