Rain Garden
Planted depression for rainwater management; attractive and sustainable drainage solution.
Carbon and evidence
Carbon Sink & Ecosystem Services
A living landscape element — a carbon sink and provider of ecosystem services, not a manufactured product. Its value is measured by sequestration and biodiversity, not embodied carbon, and it must never be netted against a product’s A1–A3.
Carbon Sequestration
Not sequestration-led
The primary value here is biodiversity and/or water function, not carbon storage.
Biodiversity Net Gain
water-tolerant planting; habitat plus water function
Source: Defra Biodiversity Metric 4.0
England requires a 10% Biodiversity Net Gain; distinctiveness is one input to the habitat unit calculation.
Water / SuDS
high — attenuates and infiltrates runoff and treats pollutants
Source: CIRIA SuDS Manual (C753)
Ecosystem Services
Establishment & Maintenance
excavation, engineered media and any underdrain carry an upfront construction carbon cost
Read This Honestly
- •Primary value is SuDS/water, not carbon.
Products in this category
No manufacturer products are listed in this category yet. You can specify rain garden generically and carry it through to a render and specification as normal.
Specification
- Finish
- Water-tolerant planting
- Service life
- 25 years