How to assemble an over-the-toilet storage unit
An over-the-toilet unit stands on two long legs either side of the toilet with shelves or a small cabinet above the cistern. It is tall, light and narrow, standing on a floor that may be wet, so the level, the leg positions and a wall fixing matter far more than the assembly itself.
- Time
- about 40 min
- Difficulty
- Easy
- People
- 1 person
- Steps
- 6
Tools needed
- Cross-head screwdriver
- Spirit level
- Drill and bits for tiles or plasterboard
- Masking tape
- Wall fixings to suit your wall
Parts to check first
Before you start, lay everything out on a soft surface (the flattened box works) and check it against the parts list in your manual.
- Two long side legs or frames
- Shelves or cabinet section
- Cross braces
- Anti-tip bracket or wall strap
- Screws and plastic feet
Step by step
Step 1: Measure the width of the toilet cistern and the height to the top of it so the lowest shelf will clear the lid when it is raised.
Step 2: Screw the shelves or cabinet section between the two side legs with the edge lips facing up, loosely at first.
Step 3: Add the cross braces at the back, then tighten all screws so the legs are parallel and the frame is square.
Step 4: Stand the unit over the toilet and adjust the feet until it is level and not resting on the cistern or pipes.
Step 5: Mark the wall fixing position; on tiles, put masking tape over the spot and drill slowly with a tile bit to stop cracking.
Step 6: Fix the bracket or strap to the wall, avoiding pipes behind the cistern, and connect it to the unit.
Common mistakes
- Setting the lowest shelf too low, so the toilet lid cannot open.
- Drilling blind behind the cistern where water pipes run.
- Leaving the unit freestanding on a slippery floor.
Safety notes
- Always fix the unit to the wall; it can fall onto someone sitting below.
- Check for pipes before drilling near a toilet, and keep glass bottles and cleaning products off high shelves if children use the bathroom.
This is general guidance for this type of product. Your product's own manual comes first: follow its order, fittings and torque values where they differ from this page.
Updated 2026-09-30