A concise, spec-first checklist for architects and QS teams: the exact fire, slip, colorfastness, and sustainability data
you should request—and how to write them into a tender so the delivered boards match the promised performance.
1) Fire Classification (Declare the Assembly, Not Only the Board)
- EU/UK: reference EN 13501-1 class for flooring use (e.g., Bfl/Cfl/Efl as applicable). For balconies/roofs, require evidence for the tested build-up (deck board + subframe + membrane + insulation).
- US: request ASTM E84 (flame spread/smoke) for the board and any additional assembly tests relevant to roof/terrace use.
- Tender note: state “no substitutions without equivalent documented test reports for the full assembly.”
2) Slip Resistance (Wet) — Specify the Method & Target
| Region/Zone | Method | Typical Target* | Spec Tip |
|---|---|---|---|
| UK/EU (shod) | Pendulum (PTV, wet) | ≈ ≥36 (project dependent) | Quote the exact board texture/emboss tested. |
| EU (barefoot) | DIN 51097 (A/B/C) | B or C near pools | State test surface preparation and detergent used. |
| US (facility policies) | Wet DCOF (procedure stated) | Per owner standard | Align with operator’s safety manual. |
*Confirm with authority/insurer. Maintenance plan must support the target; see FAQ.
3) Colorfastness & UV Aging (ΔE Matters)
- Request accelerated UV weathering with reported ΔE color change and gloss retention after defined exposure hours.
- State the cap chemistry (e.g., ASA-capped) and cap thickness tolerance in the spec.
- Include fade warranty wording in hot/coastal climates.
4) Recyclate Content & Sustainability
- Declare % post-consumer / post-industrial recyclate in the composite core.
- Ask for take-back / recycling options for offcuts and end-of-life boards.
- Reference corporate pages: Sustainability · Why CopoSurface.
5) Subframe, Gaps & Drainage (Include in the Spec)
- Joist spacing per the product datasheet; reduce spacing for diagonal/herringbone patterns.
- Clip-controlled side gaps (≈4–6 mm) and temperature-based end gaps; maintain under-deck ventilation (≥50 mm) and free drainage paths.
- Perimeter restraint and wind-uplift strategy for rooftops/balconies.
See installation notes in our News series and product spans on Ecosolid Decking Series.
6) Spec Language (Copy-Paste)
Decking: ASA-capped composite boards, color ______, texture ______. Provide written declaration of cap chemistry and cap thickness tolerance. Fire: Provide EN 13501-1 class ______ (flooring). For balcony/roof build-ups, submit tested assembly evidence. Slip: Provide wet slip test results via ______ method with target ______; results for the exact texture supplied. UV/Color: Provide accelerated UV results with ΔE and gloss retention after ______ hours; include fade warranty terms. Sustainability: Declare recyclate % (post-consumer/post-industrial). Provide take-back option for offcuts. Subframe & Details: Joist spacing ______; side gaps 4–6 mm; temperature-based end gaps; ventilation ≥50 mm; drainage paths clear.
Related Pages & Products
FAQ
Can I accept a different texture than the one tested for slip?
Avoid this. Slip values vary by emboss and finish; require testing for the exact texture to be supplied.
Do I need to name the subframe in the fire submission?
Yes—balcony/roof performance depends on the full assembly. Ask for drawings and a tested build-up.
How do I prevent substitutions after award?
Write “No substitutions without equal or better documented evidence for all listed criteria,” and enforce a pre-delivery sample sign-off.
