BLRG Rain Garden Soil - Urban Drainage System (SuDs) Soil
Verified by manufacturer 6 months ago
Rain garden soil, based on an extensive green roof substrate and a small amount of topsoil.
Application
- Sustainable urban drainage systems (SuDS).
- Can be laid to the surface if required, if a brick dominated mixture is allowed for aesthetic reasons.
- Alternatively, a gravel mulch can be laid above the soil mixture to provide a planting bed, prevent weed ingress and improve aesthetics of the rain garden.
- Specific deep rooting plants should be specified if a gravel mulch layer above 100 mm is used.
Description
Boughton BLRG Rain Garden Soil is based on an extensive green roof substrate, with a small amount of topsoil blended into the mixture to slow down filtration and provide more body. This will retain water for a longer period of time within the soil mixture, increasing its water storage performance, and improving water quality benefits.
Features and benefits:
- Provides a free draining mixture with a large amount of porosity.
- Slows down filtration and provides body.
- Capable of supporting plants which prefer a freer draining substance, but one that is sometimes saturated.
- Soil layer should be between 100–200 mm depth and consist of 10 mm pea gravel.
- Boughton BLRG SuDs soil meets and exceeds all present G.R.O guidelines.
Soil components:
- Green waste compost (PAS100): 20%.
- Crushed brick: 70%.
- Topsoil: 10%.
Heavy metal limits for soil mixtures:
- Lead: 330 mg/L-1.
- Nickle: 22 mg/L-1.
- Copper: 55 mg/L-1.
- Cadmium: 22 mg/L-1.
- Zinc: 88 mg/L-1.
General information
Color | Grey |
Finish | Natural |
Material | Soil |
Shape | Formless |
Uniclass | |
CAWS | Q37/130 Extensive green roof Q28/125 Green roof growing media system |
Specification data - Green roof substrates
General requirements | Topsoil, growing medium, subsoil and preparation materials generally. |
Supplier | Boughton Loam. |
Standard | G.R.O guidelines. |
pH (range) | 2.0–3.0. |
Maximum water holding capacity (by volume) | 30–50% (field capacity); >30% (total porosity). |
Water permeability | <15 mm/hour.Manufacturer guidanceSaturated hydraulic conductivity. |
Permitted materials for manufactured growing medium | |
Declaration of compliance | |
Composted materials | In accordance with PAS 100. |
Electrical | >150 μS/cm. Manufacturer guidanceElectrical conductivity. |
Sustainability data
Contains Red List materials | No |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Literature
BLRG Rain Garden Soil Spec Sheet