Blue Roof
Shallow attenuation layers to slow stormwater discharge; pairs well with green roofs for SuDS performance.
Carbon and evidence
Product Evidence
Generic material record — no manufacturer product attached.
Evidence Base
Category estimateNo product evidence is attached to this generic material, so nothing on this card is numerical. The guidance below is qualitative — an AI-assisted category profile — for early design discussion, not for figures.
Next step: request a current product EPD or manufacturer carbon declaration, or swap in a branded product that holds one.
What's missing (3)
- •No current product EPD is recorded.
- •No quantified carbon result is recorded.
- •No product-specific circularity or material-health claims are recorded.
Service Life — the B4 Replacement Input
40 years · basis not recorded
≈2 installations over a 60-year building study period.
Design & Specification Notes
Shallow attenuation layers to slow stormwater discharge; pairs well with green roofs for SuDS performance.
Typical Uses
- •Roof coverings
- •Waterproofing layer
- •Weather protection
Key Performance
High durability in wet exposure and wind uplift.
Specification Actions
- •Provide an EPD (EN 15804) or verified embodied carbon figure (A1–A3), and state the life-cycle stages covered.
- •Verify attenuation capacity meets drainage strategy
- •Confirm maintenance and inspection access
Indicative Health & Indoor Air
External system with no indoor air quality impact. Liner materials should be food-safe if connected to harvesting.
Products in this category
6 products from 5 manufacturers · 18 in this category. Ordered by the evidence each record holds, never by commercial standing.
Specification
- Finish
- Attenuation roof with controlled outlets
- Service life
- 40 years