Slip resistance for fiber cement decking is typically measured using two primary standards: the Pendulum Test Value (PTV) and the R-Rating (Oil-Wet Ramp Test). Because fiber cement is a manufactured product, the rating often depends on whether the board is smooth, textured (wood grain), or has a factory-applied anti-slip coating.
Common Slip Resistance Ratings
For most commercial and residential fiber cement decking products, you will find the following average ratings:
| Condition | Pendulum Test Value (PTV) | R-Rating (DIN 51130) |
| Dry | 60+ (Low Slip Potential) | R11 – R12 |
| Wet | 36 – 45 (Low Slip Potential) | R10 – R11 |
Key Technical Factors
- Surface Texture: Boards with a deep “timber grain” or ribbed profile generally achieve an R11 rating, which is suitable for outdoor walkways and pool surrounds.
- Coatings: Many manufacturers apply a UV-resistant acrylic coating. If the coating is high-gloss, the wet slip resistance can drop significantly unless an anti-skid aggregate is mixed into the finish.
- Porosity: Unlike wood, fiber cement does not absorb significant water, which prevents the growth of algae—a major contributor to slipperiness on traditional timber decks.
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APR
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