DIY Mudroom Addition

Hank chronicles the making of a new mudroom.

Reader Contribution by Hank Will
Updated on July 7, 2022
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by Tima Miroshnichenko

Learn how to build a DIY mudroom with the author as he chronicles replacing and extending his home’s mudroom addition.

When I moved to my 1907 four-square farmhouse a few years ago, I was pleased that it was equipped with a mudroom. In this particular case, the approximately 8-foot by 8-foot mudroom was part of a hip-roofed addition that had been made on the southside of the house in the late 1940s by enclosing a covered entryway. The addition included a small main floor bathroom of about the same dimension. Since the old mudroom housed the washer and dryer as well as the hot water heater, it was barely more than a cluttered corridor that led to the kitchen door. I knew right away that I’d need to make a new mudroom before too long.

Just about a year ago, in the process of making several other changes around the place, the walls of the old mudroom were torn off the house — I figured I had at least 6 months to make a new mudroom of the old space before winter arrived to freeze the exposed pipes. Since the house and the ground around it were already torn up, I decided to make the new mudroom larger than the original. My first step for making the new mudroom was to pour a concrete slab over an existing patio (complete with footings) to support the walls. I hired this done because concrete intimidates me.

Once I had the slab paid for, I commenced to frame the new space — actually it took me until October to begin the framing. I used treated lumber for the bottom plates and regular stud-grade lumber for the studs and top plates and the like. I used blue Tapcon concrete screws and Liquid Nails construction adhesive to secure the the bottom plates to the slab. I didn’t tear off the old roof until absolutely necessary to protect the existing bathroom, which is behind the aluminum-faced Celotex-clad walls.

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