Backerboard
Definition and meaning of Backerboard in real estate.
Backerboard is a rigid, water-resistant panel installed behind wall tiles or under floor tiles to provide a flat, stable surface. It protects the underlying wood studs or subfloor from moisture damage and prevents tiles and grout from cracking.
In more detail
Also known as cement board, backerboard is commonly used in wet areas such as bathrooms, kitchens, and laundry rooms. Unlike drywall, it does not rot, swell, or disintegrate when exposed to water or high humidity. It is typically made of cement and glass fibers, though gypsum-based boards are also available.
Proper installation involves screwing the board to the studs and taping the seams with fiberglass mesh tape and mortar.
Key facts
| Category | Property Types & Construction |
|---|---|
| Common material | Cement and fiberglass |
| Primary function | Moisture protection and tile support |
| Common locations | Bathrooms and kitchens |
A contractor installs cement backerboard on the walls of a shower enclosure before applying thin-set mortar and laying down ceramic tiles.
Frequently asked questions
Can you install tile directly on regular drywall?
While possible in completely dry areas, installing tile on drywall in wet areas like showers will eventually lead to water damage, mold, and falling tiles.
Is backerboard waterproof?
Most backerboards are water-resistant but not completely waterproof, meaning they require a vapor barrier or waterproofing membrane behind or over them in wet areas.