Royal Building Products PVC Quarter Round (3/4 in x 8 ft) Review (2026)
By Nate Sawyer, Editor · Updated July 2026
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- Bathrooms
- Basements
- Waterproof
The waterproof answer to swollen wood shoe molding: a cellular-PVC quarter round that will not rot or mildew where pine and MDF fail, which makes it the pick for bathrooms, basements and laundry rooms. It installs white and paintable with no priming, though it costs more than wood and its white finish only suits white trim.
Pros
- Cellular PVC will not swell, rot or mildew, making it the right shoe for baths, basements and laundry rooms
- Comes smooth white and ready to install with no priming, and it still takes paint if you want a color
- Long 8 ft sticks and a consistent profile keep joints tight on straight runs
Cons
- Costs more than a plain pine or MDF quarter round
- White PVC only matches white trim, so a wood-look floor still calls for stain-grade or vinyl shoe
- PVC expands and contracts with temperature, so long runs need small gaps and adhesive to stay tight
Specifications
| Type | Quarter-round / base shoe |
|---|---|
| Material | Cellular PVC (waterproof) |
| Length | 96 in (8 ft) |
| Profile | 3/4 in x 3/4 in (1/2 in also sold) |
| Finish | Smooth white, paintable |
| Install | Brad-nail or adhesive to the baseboard |
Frequently Asked Questions
- Why use PVC quarter round instead of wood?
- Because it cannot swell, rot or mildew. In a bath, basement or laundry room that is the whole argument — a pine or MDF shoe in those rooms eventually fails at the floor line.
- Does PVC quarter round need priming?
- No — it comes smooth white and ready to install, and it still takes paint if you want a color. That saves a step over stain-grade or primed wood trim.
- Does PVC move after installation?
- Yes, it expands and contracts with temperature, so long runs need small gaps at the ends and adhesive to stay tight. It is also white only, so a wood-look floor may still want a stain-grade or vinyl shoe.