Langley Living Roof: Extensive Biodiverse Seeded or Seed & Plug System - Extensive Biodiverse Living Roof
Verified by manufacturer 5 days ago
Biodiverse seeded (on warm roof build-up)
Biodiverse seeded (on warm roof build-up)
Langley Extensive Biodiverse system provides a living roof that is primarily designed to maximise the variety of plant species and encourage biodiversity.
Application
- Designed to be used in conjunction with the Langley RBM, Hotmelt and Liquid waterproof systems.
- Suitable for roofs ≤10° pitch.
- Suitable for use on both new build and refurbishment projects
Description
Langley Biodiverse Living Roof systems are designed to provide all the benefits of a drought tolerant, biodiverse living roof that can be adapted to suit local and regional nature conservation and planning requirements.
Substrates are GRO compliant and tested to BS 8616:2019.
Our 20mm cuspated drainage / reservoir layer is constructed from HDPE (High Density Polyethylene) and includes a laminated upper filtration & bottom *protection fleece (* required on warm & cold roofs only) to simplify installations and ensure consistency across the living roof.
Fire Performance – the Langley biodiverse systems can achieve BRoof(t4) compliance when tested as part of a full Langley roof buildup.
Features and benefits:
- The biodiverse system can be tailored to accommodate localised planting and can contribute towards roof-based Biodiversity Net Gain (BNG) or Local Biodiversity Action Plan (LBAP) requirements.
- Mounded substrate (80-150mm mounded biodiverse substrate), varied planting options and habitat incidentals, (logs, piles aggregates, pebbles and nesting habitats), encourage birds and insects to use the planted roof space.
- The extensive biodiverse system is fully GRO compliant.
- Designed for both new build and refurbishment projects
- System is suitable for roofs of ≤10° pitch.
- System can provide SuDs capabilities.
- The drainage layer is capable of retaining 5.5 litres per sqm.
- RHS Plants for Pollinators. 81% of the wildflower species included within this mix are recognised by the Royal Horticultural Society as supporting UK pollinating insects.
- Seed mix comprises of 34 wildflower & grass species.
- The wildflower seed in this mixture is of UK native origin.
- The seed collected for this mix was done so using Flora Locale code of practice ensuring that the wildflower seed is of UK origin and is harvested and grown responsibly to aid conservation and help protect native UK wild plants.
- Wildflower plugs can also be included within the specification to increase planting cover, variety and to encourage biodiversity
This is covered by our Independent Insurance Backed Guarantees of up to 30 years aligned to the associated Langley Waterproofing System.
General information
Color | Green Other Brown |
Finish | Natural |
Material | Vegetation Other Aggregate Wild flower |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | Other Guidance for specification option: Covered by Langley's independent insurance backed guarantee aligned to the associated Langley waterproofing system. Consult manufacturer for details. |
Uniclass | |
CAWS | Q37/130 Extensive green roofs and biodiverse roofs |
Specification data - Extensive green roof systems
Classification data | |
Moisture control | |
Drainage layer | Langley 20 mm 3-in-1 moisture control layer. Guidance for specification option: Cuspated drainage/ reservoir layer constructed from high-density polyethylene (HDPE) and includes a laminated upper filtration and bottom protection fleece. |
Drainage ancillaries | Inspection chamber(s). Guidance for specification option: Inspection chambers are a modular design, supplied as two types of base (standard and parapet), different heights of extension collar and a lockable lid. Consult manufacturer for further details. Not required. |
Planting systems | |
Planting medium | Biodiverse substrate (mounded). Guidance for specification option: Approx. 80–150 mm thick (average 115 mm). Average weight, dry: 97.8 kg/m²; saturated: 165.6 kg/m². |
Planting requirements | 80:20 wildflower and grass seed mix. Biodiverse seed mix comprises of 34 wildflower and grass species sown on 80–150 mm mounded biodiverse substrate. Guidance for specification option: Once established, this encourages species diversity and promotes long-term growth. |
Fire breaks | 20–40 mm shingle margins. Guidance for specification option: Approx. 75 mm thick. |
Edge restraints | Langley aluminium slotted retention and separation trim. Not required. |
Approvals | RHS Plants for Pollinators. |
Standards | GRO, FLL and Broof(t4) compliant. Guidance for specification option: Tested to BS 8616:2019. |
Accessories | Habitat incidentals. None. |
Total thickness | Approx. 100–170 mm (average 135 mm). Guidance for specification option: Average weight, dry: 99.3 kg/m²; saturated: 172.6 kg/m². |
Sustainability data
Material | Vegetation Other Aggregate Wild flower |
Literature
Extensive Biodiverse Seeded System or Seed & Plug System Data Sheet
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