Verified by manufacturer 2 months ago
A native wildflower blanket for a biodiverse green roof system on pitched roofs.
Suitable for both new build construction and retrofit refurbishment projects.
A native wildflower blanket for a biodiverse green roof system on pitched roofs. Lightweight extensive biodiverse green roof vegetation blanket providing instant greening of a roof with a mixture of approximately 44 species of wildflowers. The blanket is installed on a minimum 80 mm of substrate and meets the growing demand for native species vegetation to satisfy the requirements of BREEAM (Building Research Establishment Environmental Assessment Method) or a biodiversity strategy.
Features and benefits:
Color | Green |
Shape | Rectangle |
Height | Manufacturer guidanceHeight of system typically 170–220 mm (green roof elements only). |
Warranty description | Manufacturer guidanceA comprehensive range of guarantee options are available. Please contact your local Bauder Area Technical Manager for more information. |
Uniclass | |
CAWS | Q37/130 Extensive green roof |
Product range |
Protection | |
Protection layer | BauderGREEN FSM 600 protection mat.Guidance for specification option: Heavy duty protection layer made from polyester and polypropylene fibres. Laid on the completed waterproofing to protect the completed waterproofing from damage (not required for inverted roofs). Normally installed under the entire green roof area but kept clear of all outlets and drainage trims. FSM mats should be lapped by 150 mm at all joints. Loose laid. Laps to be sealed by lightly heating overlap area with a propane gas torch/ hot air welding gun to melt the polypropylene fibres and then press seal the two fleece sheets together. Sufficient protection fleece must be allowed for so that it may be installed to all abutment upstands and edge details, in accordance with the Bauder instructions. Extend to full height of the upstand and secure in place by using a lead or fabricated metal counter-flashing. Should be trimmed well back from ALL outlets. Openings in landscape restraint kerbs (where present –roof slopes above 5º), the protection layer should be cut away from the openings/ gaps to avoid impeding drainage.
BauderGREEN SV 600 protection and moisture mat.Guidance for specification option: Lightweight protection layer made from recycled man-made fibres. Laid on the completed waterproofing to protect the completed waterproofing from damage (not required for inverted roofs). Normally installed under the entire green roof area but kept clear of all outlets and drainage trims. Eco-mat should be lapped by 150 mm at all joints. Loose laid. Sufficient protection fleece must be allowed for so that it may be installed to all abutment upstands and edge details, in accordance with the Bauder instructions. Extend to full height of the upstand and secure in place by using a lead or fabricated metal counter-flashing. Should be trimmed well back from ALL outlets. Openings in landscape restraint kerbs (where present –roof slopes above 5º), the protection layer should be cut away from the openings/ gaps to avoid impeding drainage.
BauderGREEN GGM 6 rubber protection mat.Guidance for specification option: Bauder's Heaviest duty protection layer made from recycled shredded tyres. Laid on the completed waterproofing to protect the completed waterproofing from damage (not required for inverted roofs, not for use with PVC waterproof membranes/ Bauder Single Ply Thermofol PVC Roof system). Normally installed under the entire green roof area but kept clear of all outlets and drainage trims. Normally installed to provide access over waterproofing in heavily trafficked areas. Pro-mat should be lapped by 150 mm at all joints. Loose laid. Where landscaping installation is not imminent, loose laps should be taped with gaffer tape to eliminate the trip hazard. Sufficient protection fleece must be allowed for so that it may be installed to all abutment upstands and edge details, in accordance with the Bauder instructions. Extend to full height of the upstand and secure in place by using a lead or fabricated metal counter-flashing. Should be trimmed well back from ALL outlets. Openings in landscape restraint kerbs (where present –roof slopes above 5º), the protection layer should be cut away from the openings/ gaps to avoid impeding drainage.
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Root barrier | 20/ 40 mm rounded river washed pebbles.Guidance for specification option: For slopes below 10° only. A vegetation barrier must be provided to all perimeters, abutments penetrations including protrusions i.e. man-safe posts etc. Stones/ aggregates with sharp edges must not be used i.e. flint. In accordance with current GRO guidelines, the specified barrier widths are as follows:
The current barrier guidelines are set by the GRO codes of practice that Bauder follows and promotes. These are guidelines and not currently a legal requirement under British Standards or Building Regulations. However, not following these guidelines may affect an insurance claim in the unlikely event of a fire. Consequently, Bauder Ltd cannot accept liability for issues arising from non-compliance with the current GRO guidelines. Paving slabs.Guidance for specification option: For roof slopes 10° upwards, a hard edge should be supplied using paving slabs as an alternative to 20/ 40 mm round river washed pebbles. Manufacturer guidanceSupplied by others. |
Moisture control | |
Drainage layer | BauderGREEN WSP 75 / 50 reservoir board.Guidance for specification option: Water storage and multi-directional drainage layer. Used on roofs 0–25° finished falls (the only suitable Drainage and Protection layers for slopes 6° upwards). Boards laid over the entire area to provide continuous drainage and increased water capacity for the vegetation. Loose laid (open cups up) on to the Protection Layer (or WFRL on inverted roofs) over completed waterproofing ensuring that the rebated boards are properly interlocked to provide adequate anchorage prior to the soil being laid. The board cups can be filled with water to provide temporary loading against wind uplift prior to installing the remaining landscaping elements in accordance with the specification. In the event of any confusion concerning this item, Bauder Ltd should be contacted so that advice may be given. Cut to fit closely around penetrations and outlets. Roof slopes 6° upwards, a parapet wall or restraint kerb must be provided to support the water storage/ drainage board at the base of the slope. This should be included within the deck construction and reference made within the waterproofing specification also. This in turn will restrain and stabilize the landscaping against imposed shear load forces.
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Filter membrane | BauderGREEN FV 125 filter fleece.Guidance for specification option: Fine mesh PP geotextile used in conjunction with Bauder substrates. Bauder Filter Fleece is designed to separate and contain Bauder substrates from the drainage element of the green roof system (for slopes 0–5°). It prevents fine material from being washed out of the substrate layer. Fleece joints should be overlapped 150 mm. Fleece should not be taken over the top of drainage outlets. A filter layer is not used over reservoir board on slopes 6° or above, where the reservoir board is directly filled with substrate growing medium. However, a separate strip of Bauder Filter Fleece must still be used to separate the growing medium from the vegetation barrier at perimeter abutments and around pipe protrusions, outlet inspection chambers etc. dressed up all upstands and around all protrusions to at least flush with the finished surface level. At abutments the Filter Fleece must be used to separate the vegetation/ drainage barrier and substrate growing medium by extending it 500 mm beneath the reservoir board and then bringing it up between these two items. Upstands (soft landscaping): Extend up, between vegetation barrier and growing medium and trim flush with finished surface level. Upstands (Hard landscaping): Extend to top of perimeter abutments and trim flush just below finished surface level.
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Substrate | BauderGREEN SUB-BM UK biodiverse substrate.Guidance for specification option: Recycled crushed brick, expanded clay, shale, composted pine bark. Minimum depth 80 mm, preferred depth 100 mm+. Lightweight, free draining substrates designed as a growing medium for a range of different plant species. This FLL/ GRO compliant substrate provides a free draining, growing medium for biodiverse green roof systems. Additionally, it provides aeration qualities with some inherent water retention.
For roofs pitched 6° upwards, apply the substrate growing medium directly into the open cup of the reservoir board and then build up to the depth specified. Substrates are raked out to give an even coverage of the required depth after settlement. Handle in the driest condition possible. Do not handle or install when wet or frozen. Start by applying two equal layers, building up to the required maximum depth. Gently firm each layer before spreading the next. Allowance should be made for any settlement that may occur. It is recommended that ‘measuring stick’ markers of the required depth be used around the roof area to ensure that a minimum acceptable thickness of growing medium is achieved. Depending on size and access of the project the ‘substrate’ can be supplied by various methods i.e. tipper, silo lorry (pumping directly onto the roof area), Big bags, or sacks. Prior to costing this element of the installation, the ‘Bauder Approved Contractor’ must contact Bauder Ltd so that they may advise on the best solution on any specific contract. Trellis Substrate restraint (including for all slopes above 16º): Provision must be made by the installing contractor for supplying and fabricating 25 x 50 mm untreated timber formed into a trellis frame that is supported at the base of the slope (resting against the protection layer). The trellis is to form a series of retaining grids 400 mm square and used on all slopes between 16–25º. This trellis will provide initial retention until plant establishment and help prevent soil erosion. It will eventually rot away naturally. Important note regarding alternative substrates: Alternative substrates are not recommended for Bauder supplied planting. |
Edge restraints | Not required.BauderGREEN AL 150 edge trim.Guidance for specification option: Perforated edge/ drainage trim used to frame and contain the green roof build-up. AL150 is specifically for use within substrate based green roofs. AL150 must always be used in conjunction with the pebble vegetation barrier (below 10° only)/ or hard edge (such as a paver). Normally installed directly onto waterproofing, the drainage trims can be welded down using lengths of the waterproofing membrane. The trim is used to frame the green roof build up and should be completed and inspected prior to living material being delivered to site. See Bauder Green Roof Installation Guide for full details.
Precautionary note: When cutting metal, please ensure that appropriate tools and personal protection equipment are used. Retention Angle (supplied by others).Guidance for specification option: Used behind a waterproofed castellated retention batten and perimeters/ top of the slope (when Bauder Trims are not sufficient in height). Purpose designed aluminium or stainless-steel perimeter retention angles, used to contain landscaping or pebble ballast when interfacing soft or hard landscaping. These retention angles are to be supplied and fabricated by others to the landscape architect’s requirements and incorporating drainage perforations where required. Cutting: Neat, accurate and without spalling. Junctions: Cut with a hacksaw to form 90º corners – mitre cut fixing arm. Position: True to line and level. Smooth continuous lines. Fabrication: Obtained from a specialist metal fabricating company. The metal should be regularly perforated on the vertical face to allow drainage, with drainage holes being 3–5 mm maximum diameter. The top leading edge should be folded fully or at a right angle by a minimum of 20 mm to eliminate the sharp edge. Horizontal leg: For the base of the slope, in conjunction with the castellated retention battens – To be 200 mm wide. Only the vertical section needs to be perforated. For open perimeters/top of the slope – To be 200 mm wide with 60 mm diameter holes positioned and cut centrally along the fixing arm at a rate of 6/ linear metre. Height: To be as landscaping build-up. Installation: At the base of the slope, in conjunction with the castellated retention battens – The retention trims must be securely placed in front of the drainage gaps in the castellated retention kerb. The angle should be installed loose over the specified protection layer. At open perimeters/top of the slope – The retention trims must be secured in place using the specified Bauder capping sheet/ Waterproofing strips/ flashing pieces (1000 x 200 mm size), bonded to the surface of the horizontal leg and set at intervals of 400 mm between flashing pieces. The main capping sheet/ membrane/ waterproofing must be overlapped by a minimum of 100 mm. Hard edge (minimum 300 mm width): The retention trims should be used in conjunction with the pebble vegetation barrier/ hard edge. Precautionary note: When cutting metal, please ensure that appropriate tools and personal protection equipment are used. |
Waterproofing | Bauder Total Green Roof System Roof Covering System. Bauderflex Green Roof System. Bauder Single Ply Thermofol PVC Roof System. Bauder Single Ply Thermoplan T Flexible Polyolefin Roof System. Bauder LiquiTEC Cold Liquid Applied Roof System. Manufacturer guidanceTo be fully specified separately. |
Vegetation | Bauder WB Native Wildflower Blanket System with Bauder Xero Flor Organic Fertilizer. Guidance for specification option: A British grown vegetation Blanket designed for use on green roofs. Containing a broad mix of UK native wildflower species. Suitable to be laid on Bauder (FLL Compliant) Biodiverse substrate. Bauder WB Native Wildflower Blanket contains a broad mix of British Wildflowers grown in substrate on a coir carrier. The natural fibres of the coir carrier promote the rapid rooting of the blanket into the substrate. The product is installed over Bauder, FLL Compliant Biodiverse Substrate (see Product Data Sheet). The vegetation is a mix of hardy Wildflowers, annuals and herbs. The vegetation is cut back in the summer prior to delivery to reduce plant stress.
Lay as soon as possible on delivery. Growing medium condition: Immediately prior to planting, the whole system should be thoroughly watered to ensure that the water storage/ drainage board is filled and the substrate growing medium saturated. Blankets should be laid diagonally or perpendicular to the slope of the roof. Stagger joints, butt together or slightly overlap to prevent gaps. Blankets are not to be stretched. Thoroughly water using surface sprinklers immediately after installation and substrate dressing, ensuring that the blankets and substrate are fully saturated before moving on to the next area. On steeper slopes the blankets can be additionally pegged with bio-degradable pegs (supplied by others) to secure them until they root, but these must not penetrate further than the depth of the substrate growing medium. WB Native Wildflower Blanket should only be layed by skilled operatives. Care should be taken not to traffic the blanket during or after installation. See Bauder’s Green Roof Installation Guide for full details. Establishment Watering Requirements: For Bauder WB Native Wildflower blankets, it will be necessary to keep the blanket substrate damp for a period of at least 10 weeks during the period of vegetation establishment. It should be established at tender stage, who should carry out this task and that they have all relevant information available regarding watering requirements. It is the responsibility of the roofing contractor to liaise with the main contractor/ building owner to provide water and ensure that the planted growing medium is thoroughly irrigated immediately after installation. An adequate mains water supply of sufficient pressure must be available and operational prior to the planting being delivered and installed. Initial watering must be by surface mounted sprinklers. For larger roofs this will likely entail more than one watering point at roof level. Manufacturer guidanceFertilizer should ideally be applied during March/ April, as it helps the plants to prepare for extreme weather conditions and flowering whilst also allowing the different species to gain sufficient nutrients without competing against each other. Organic fertilizer can be obtained direct from Bauder in 25 kg bags, which is sufficient for an area of 312.5 m2 when applied at the recommended rate of 80 g/m². Areas of up to 30 m² may be applied using either a handheld spreader or strewn by hand from a bucket. Larger roofs should always be done using a trolley applicator, which can be purchased direct from Bauder. Always apply the fertilizer at the given rate written on the bag. It is recommended that the fertilizer is lightly ‘watered in’ immediately after application, to avoid “burning” of the foliage, which may occur if fertilizer pellets settle on the leaves. Dung-based organic fertilizers should be avoided. |
Maximum Slope | 25° (trellis is required above 15°). |
Accessories | Not required. BauderGREEN AL 150 edge trim. BauderGREEN KS ALU 250 inspection chamber. Guidance for specification option: The BauderGREEN KS ALU 250 inspection chamber is fabricated from a perforated aluminium sheet with an opening/ lockable lid and is used for intensive and extensive soft landscaping, as well as ballasted inverted roofs. Install centrally over rainwater outlets. A simple on-site modification allows the unit to be used over outlets that are located close to wall or kerb abutments. The Inspection Chamber is suitable for landscaping depths of less than 100 mm. Where landscaping is deeper than 100 mm, the 50 mm or 100 mm height adaptors can be added as necessary to achieve the required height to be level with or slightly proud of the surrounding landscaping. Surround: Using 20/ 40 mm grade washed pebbles; the inspection chamber must be surrounded by a 500 mm vegetation barrier to prevent unwanted growth obstructing the drainage system. BauderGREEN KS ALU 250 inspection chamber:
BauderGREEN KS AE 50 chamber height adaptor. Guidance for specification option:
BauderGREEN KS AE 100 chamber height adaptor. Guidance for specification option:
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