For the past few weeks, Jose and I have been doing Q&A’s on our Instagram. We have so much fun answering everyones question out there, and some of the questions actually get us thinking more and helps us make fresh and new content for the blog… like this post. So last week someone asked for our DIY Window Box plans and tutorial that we mounted on our Tuff Shed last year. I have to say… I fully (and I mean fully) thought that we wrote this out and posted it already but maybe I just dreamt it. Anyway here is a very fun and easy DIY Window Box Tutorial.

Our DIY window boxes are four-sided just to be removed later on, but you could easily make this box three-sided leaving the back open against the your shed or wall, reducing the overall cost of the second 3/4 x 7 1/4 in. PVC board. We have used container plants in our window boxes, so minimal contact to the wall of the shed of dirt and water. If you are planning on filling with dirt and flowers we would recommend putting the backside on the flower box to protect the wall of your shed.

DIY Window Box Materials

Main Window Box Sides and bottom: 1 in. x 7-1/4 in. x 8 ft. White PVC Reversible Trim

Upper Trim: 1 in. x 3 in. x 8 ft Trim Board Primed Pine Finger-Joint White PVC

Lower Trim: 1 in. x 2 in. x 8 ft. Trim Board Primed Finger-Joint

Corbels: 2-1/4 in. x 5 in. x 7 in. Rubberwood Hamilton Traditional Bracket

Screws for box assembly: #8 x 2-1/2 in. Star Drive Trim-Head White Trim Screw

Screws to attach box to shed: #9 x 2-1/2 in. Star Drive Bugle Head R4 Multi-Purpose Wood Screw

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Step by Step for these exact boxes

• Cut the short sides of your box (not your trim) to 5 1/2 inches
• Cut the front long side of your boxes (not your trim) to 30 inches
• Cut the back long side of your box (not your trim) to 28 1/2 inches
• Cut your bottom board to 30 inches and rip it 4 3/4″ wide
• Drill 3 3/4″ holes into your bottom board for drainage
• Cut your upper and lower trim short sides to 6 inches
• Cut your upper and lower trim long sides to 31 inches
• Screw together each side and trim using white GRK trim screws to minimize the appearance of the screws.
• Two inches down from the top, screw the box to the shed right through the back with 2 1/2 inch star GRK screws.
• Paint Corbels to protect from the elements
• Attach the corbels right to the shed and the bottom of the box.

These window boxes can be made for your shed or house … Depending on the size of your windows you may need to adjust the size of your window boxes to fit! Ours are pretty standard size for a shed but if you made them for a house they may need to be larger.

Not going to lie… I kind of hastily planted these window boxes after I let my plants get a little crispy out in the sun because I was procrastinating… so I’ll share again later after I get them a little more pretty, but the more the merrier right? Not sure I could fit another plant in there! Another thing I’ve really enjoyed about our window boxes is switching up the types of plants in our window boxes based on the season. Would you guys want to see an updated look at our window boxes each season?? Let me know in the comments. If you make your own window boxes I’d love to see how they turn out, be sure to tag me on Facebook and Instagram!

Xx Liz Marie