77 sq ft of wall needs 6 sheets of HardieBacker 500 (3×5 ft), about 153 screws.
| Board | Sheets | Fasteners | Cost |
|---|---|---|---|
| HardieBacker 500 (3×5) | 6 | 153 | $125 |
| Durock ½ (3×5) | 6 | 153 | $115 |
| Durock ⅝ (3×5) | 6 | 153 | $146 |
| GoBoard 3×5 (3×5) | 6 | 153 | — |
| GoBoard 4×8 (4×8) | 3 | 138 | — |
| wedi 3×5 (3×5) | 6 | 85 | $376 |
| wedi 4×8 (4×8) | 3 | 85 | $487 |
Floor & Decor prices checked October 2026; wedi at August 2026 list.
| Board | Sheets | Fasteners | Cost |
|---|---|---|---|
| HardieBacker 500 (3×5) | 6 | 153 | $125 |
| Durock ½ (3×5) | 6 | 153 | $115 |
| Durock ⅝ (3×5) | 6 | 153 | $146 |
| GoBoard 3×5 (3×5) | 6 | 153 | — |
| GoBoard 4×8 (4×8) | 3 | 138 | — |
| wedi 3×5 (3×5) | 6 | 85 | $376 |
| wedi 4×8 (4×8) | 3 | 85 | $487 |
In a shower, cement board only holds the tile. Coat it with a liquid membrane such as RedGard (55 sq ft per gallon for two coats) or cover it with KERDI before tiling.
The full method, material data and tips are on the main backer board calculator page.