DIY Under-Sink Cabinet: Elegant Laminate & Hardboard Build 2026

Build a stylish, spacious, and natural-looking DIY under-sink cabinet with ease, perfect even for small bathrooms. The sliding doors glide smoothly in routed grooves in the base and top rail.

DIY Under-Sink Cabinet: Practical and Beautiful

With just over half a square meter of hardboard, the same amount of laminate, and about 1.5 m² of laminated wood, you can craft the body of this DIY under-sink cabinet. The sliding door tracks are made using a table saw with a parallel guide: a 5 mm depth in the base is sufficient, while the top rail depth is doubled to allow doors to be inserted and removed. Joints use the biscuit system for greater strength compared to doweling, leaving no visible joinery inside or out.

If the wall is masonry, the cabinet can be wall-mounted using suspension bars similar to those for kitchen wall units. The method used here involves two front legs combined with support on a wall-mounted shelf, a simpler solution for lightweight partitions like drywall or cellular concrete.

The laminated wood used here is nyatoh, whose medium-dark tone highlights the grain, but any other laminate treated with multiple coats of grain filler and sealer will work well, offering far greater durability than any industrial bathroom cabinet in chipboard, plus an unmatched aesthetic result.

What You'll Need

• Laminated wood (nyatoh or similar) for the cabinet body
• Hardboard for the sliding doors
• Laminate for finishing
• Biscuit joiner and biscuits
• Table saw with parallel guide
• Wood glue and clamps
• Wall-mounted shelf or suspension bars
• Two front legs

Sliding Door Tracks, Dowel Seats, and Gluing

Route the grooves for the sliding doors in the base and top rail using the table saw. The base groove should be 5 mm deep, while the top rail groove should be 10 mm deep to allow door installation and removal. Use a biscuit joiner for all joints—this ensures maximum strength and a clean, invisible finish. Apply wood glue to all joints and clamp firmly until dry.

The Sink and Final Details

Install the sink on the cabinet, ensuring proper plumbing connections. For additional storage, consider adding bathroom vanities or mirrors to complete the space. The hardboard doors feature calibrated holes for air circulation, preventing moisture buildup. For a cohesive look, pair with lighting and wall decor.

Frequently Asked Questions

Can I use this cabinet in a small bathroom?

Yes, the compact design fits small spaces, and the sliding doors save space. Enhance your bathroom with home improvement items like storage benches or rugs.

What tools are essential for this project?

You'll need a table saw, biscuit joiner, clamps, and wood glue. For outdoor projects, check out garden supplies or sheds.

How do I maintain the wood finish?

Apply multiple coats of grain filler and sealer to protect against moisture. For related furniture, browse dining tables or sofas.

Can I add more storage to this cabinet?

Yes, install shelves or baskets inside. Consider bookcases and shelving units or display shelving for extra organization.

Is this cabinet suitable for outdoor use?

No, it's designed for indoor bathrooms. For outdoor storage, explore outdoor patio furniture or pergolas.

For more DIY inspiration, visit kitchen islands and carts or beds.

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