Build a Wooden Slush Tray With Drip Grate in 2 Hours for $30
A slatted grate that lifts boots above the meltwater is what separates a dry entry from a warped, stained floor.
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Every November, wet boots turn the entry floor into a slow-motion disaster. Meltwater pools under plain rubber trays, soaks the sole, and sits against the floor, which is how stains and warped boards start. The variable that separates a tray that works from one that fails is the gap between the slats and the basin. When boots rest on a raised grate with 1/4-inch gaps, water drains away from the sole and evaporates, instead of wicking back up into the boot and spreading across the floor. Seal the basin edges properly and nothing leaks. This build takes about 2 hours and costs $30 total, using basic pine and a sealed plastic liner, no special tools needed.
What You'll Need
- Materials (~$30 total):
- Two 1x4 pine boards, 8 feet long, for the frame and slats (~$12)
- One 1x2 pine board, 6 feet long, for the slat supports (~$4)
- One shallow plastic under-bed or paint tray liner, about 30 x 16 inches (~$8)
- 1 1/4-inch exterior wood screws, box of 25 (~$4)
- Clear water-based polyurethane, small sample can (~$6, optional if you already own some)
- Tools:
- Hand saw or miter saw
- Drill with a 1/8-inch bit and a Phillips bit
- Tape measure and pencil
- 120-grit sandpaper
- Small paintbrush
How to Do It
- Measure the inside floor of your plastic liner. The grate must sit just inside the rim so it rests level and doesn't rock, which would let boots tip and spill water.
- Cut the 1x4 boards into slats about 1/2 inch shorter than the liner's inside width. Cut 8 to 10 slats, depending on length. Slightly shorter slats make dropping the grate in and lifting it out easy for emptying.
- Cut two 1x2 supports to the grate length. These run underneath the slats and keep them evenly spaced, so the grate stays rigid under wet boots.
- Sand every cut edge and the top faces with 120-grit paper. Rough wood snags laces and holds water, and smooth surfaces take sealer much better.
- Seal all pieces with two coats of water-based polyurethane, letting each dry per the can. Bare pine soaks up meltwater, swells, and eventually rots or smells, so sealing is what makes this last all winter.
- Assemble by laying the supports parallel, then predrilling and screwing each slat down with two 1 1/4-inch screws, using a 1/4-inch scrap as a spacer. Predrilling prevents splitting, and even gaps let water drain fast.
- Place the grate inside the liner by the door and test it with a cup of water poured across the slats. If it pools anywhere, shim or re-level it so water flows into the basin rather than sitting on the wood.
- Empty the basin when it's half full and wipe the grate weekly. Standing water breeds mildew, so a quick dump keeps the tray fresh through the whole slushy season.
Professional mudroom installers often add a small sloped spacer under one end of the tray so water travels toward a single corner. Slip a 1/2-inch wood shim under the back edge of the liner, and meltwater collects in one spot where it's simple to pour out, instead of sloshing across the whole basin.
