Radmat Blue Roof Attenuation System
Verified by manufacturer 5 months ago
BBA Agrément Certificate
Certificate type
A Radmat Blue Roof system is an effective means of providing a Sustainable Drainage solution (SuDS) in inner city and urban environments.
Application
Radmat Blue Roof systems are designed by an in-house team to achieve the required attenuation volume and/or the required discharge rate, with discharge rates significantly below the greenfield run off rate of 5 L a second equivalent being achievable.
No special rainwater outlets are required for the system, the flow control and overflow devices work with any brand of rainwater outlet. It is however recommend the inclusion of a telltale provision as with any temporary or permanent water holding system.
Design considerations:
When designing a Blue Roof system in addition to advising on the depth of the geocells Radmat will highlight the impact the overall FFL-SSL as the roof thickness will increase, impacting both threshold heights and the height of the waterproofing upstand. A suitably qualified person will need to assess the impact of live load on the roof.
Description
Storing water above the waterproofing layer a Radmat Geocell Blue roof system provides a method of regulated control to meet a limited discharge consent in accordance with SuDS design principles. Rainwater is held for no more than a 24-hour period from the end of the maximum designed rainfall event, and achieves half empty within a 12-hour period.
Designed to accommodate a 1 in 100-year storm event plus 40% climate change factor using FEH13 (Flood Estimation Handbook) data a Radmat Blue Roof system can be integrated within Radmat new build or refurbishment roofing systems and be incorporated in the Radmat System Warranty.
Radmat’s PermaQuik PQ6100 was the UK’s first waterproofing system BBA Certified for use in Blue Roof applications, enabling the specification of waterproofing, insulation, blue roof and green roof system from a single source.
Finishes:
Radmat Blue Roof systems are and suitable for zero falls flat roofs, terraces and podiums. Radmat Blue Roof systems can be finished with paving, 20/40 mm ballast or a green roof system and can deliver amenity and rainwater source control.
General information
Color | Other |
Finish | Unfinished |
Material | Other |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | 40 year |
Uniclass | |
CAWS | Q37/130 Extensive green roof Q37/120 Simple intensive green roof Q37/110 Intensive green roof |
Specification data - Blue roof systems
Preparation | |
Horizontal work | EshaPrimer.BlackOut Roofing Surface Conditioner. |
Skirtings and vertical work | EshaPrimer.BlackOut Roofing Surface Conditioner. |
Air and vapour control layer | |
Type | Not Required.AluBase XL.Guidance for specification option: A silver self-adhesive bituminous waterproofing membrane that forms a barrier against vapour and gases. Vedatop SU.Guidance for specification option: Vedatop SU is a self-adhesive SBS-modified base layer reinforced with a high tear resistant carrier. EshaBase Alu.Guidance for specification option: A torch applied aluminium cored vapour barrier for bituminous roofing-systems. EshaBase SA Sand.Guidance for specification option: EshaBase SA Sand is a self-adhesive SBS modified Vapour Barrier for bituminous roofing systems. EshaBase SA Alu 3 mm.Guidance for specification option: A self-adhesive SBS aluminium cored vapour barrier for bituminous roofing systems. EshaBase SA Alu 4.2 mm.Guidance for specification option: A self-adhesive SBS aluminium cored vapour barrier for bituminous roofing systems. |
Attachment | Not applicable.Torch-on.Self-adhesive. |
Insulation | |
Type | ProTherm G XPS X ULTRA 300 SL.Guidance for specification option: ProTherm G XPS X ULTRA 300 SL Inverted Roof Insulation is a unique rigid, closed cell type extruded polystyrene board with integral high density skin. ProTherm G XPS X 300 SL.Guidance for specification option: ProTherm G XPS X 300 SL Inverted Roof Insulation is a unique rigid, closed cell type Extruded polystyrene board with integral high density skin. ProTherm FOAMGLAS® T3+ Slab.Guidance for specification option: Cellular glass insulation slabs which measure 600 x 450 mm. They meet Euroclass A1 test standards. ProTherm FOAMGLAS® T3+ Tapered Slab.Guidance for specification option: Cellular glass insulation slabs which measure 600 x 450 mm. They meet Euroclass A1 test standards. ProTherm FOAMGLAS® Invatherm.Guidance for specification option: ProTherm INVATHERM™ is a non-combustible thermal insulation suitable for all types of inverted flat roofs. It offers a Euroclass A1 rating (tested to EN 13501-1) and is a highly durable product with an excellent compressive strength. |
Fixing | Loose-laid over Waterproofing with ship-lapped joints.Loose-laid over Waterproofing with butted joints and a minimum 150mm overlap between layers.Bedded and encapsulated in EshaPur 95/25 bonding bitumen.Bedded and encapsulated in PC®58 Cold Bitumen Adhesive. |
Water control layer | ProTherm XPS X MK WFRL. |
Overlay | |
Type | Not Required.Coated with EshaPur 95/25 Oxidised Bitumen.Guidance for specification option: EshaPur 95/25 is a hot applied oxidised bitumen solution for use on metal, concrete, stone or timber. 95/25 is a bituminous product manufactured by air blowing of penetration grade bitumen, at high temperature, resulting in a material of a much higher penetration index. Coated with PC®58 Cold Bitumen Compound. |
Carrier membrane | |
Type | Not Required.Vedatop SU.Guidance for specification option: VEDATOP® SU is a self-adhesive SBS-modified base layer reinforced with a high tear resistant carrier. |
Waterproofing | |
Type | PermaQuik PQ6100 Hot Melt Waterproofing System.Guidance for specification option: PQ6100 is a hot melt monolithic membrane consisting of a blend of synthetic rubber and natural rubber in a specially selected compatible bitumen. |
Attachment | Hot-applied in 2 3 mm layers with central reinforcement. |
Protection layer | Texsa Protection Sheet with all laps torch or hot-air sealed. |
Attenuation layer | SWG Blue Roof Geocell wrapped in G12 Geotextile Filter Fleece.Guidance for specification option: SWG Geocells provides attenuation as part of a Blue Roof system that is designed to manage and control incident rainfall at a rate in line with the SuDS strategy or attenuation for a development. Available in heights: 50–200 mm, consult manufacturer for details and insert requirements. SWB Blue Roof Geocell wrapped in G12 Geotextile Filter Fleece.Guidance for specification option: SWB Geocells provide attenuation as part of a Blue Roof system that is designed to manage and control incident rainfall at a rate in line with the SuDS strategy or attenuation for a development. Available in heights: 50–200 mm, consult manufacturer for details and insert requirements. |
Drainage layer | Not Required.MedO DM6 Drainage Mat.Guidance for specification option: Radmat DM6 drainage and water storage element primarily intended for behind retaining structures, on roof decks and in subsurface works. Consisting of a high performance single cuspated HDPE (High Density Polyethylene) core with a geotextile filter layer thermally bonded to one side. The geotextile filter layer has an overlapping flap that extends beyond the core on one edge. MedO DM12 Drainage Mat.Guidance for specification option: Radmat DM12 is a drainage board consisting of a non woven needle punched geotextile filter layer thermally bonded to one side of a 12mm deep HDPE (High Density Polyethylene) cuspated core. DM12 is effectively impermeable one side. The textile filter has a flap extending beyond the core on one edge. MedO D25 Drainage and Reservoir Board.Guidance for specification option:
MedO D40 Drainage and Reservoir Board.Guidance for specification option:
|
Roof surfaces | Finishes to Landscape Architect specification.MedO Living Green Roof System.Pavers on Pedestals.Stone Ballast. |
System accessories | Radmat Blue Roof Restrictor Outlet.Radmat Blue/Green Roof Inspection Chamber.Guidance for specification option: An Inspection Chamber designed for blue/green roof systems. Consult manufacturer for details and insert requirements. Radmat Blue Roof Silt Trap.Radmat Geocell Cross Connector. |
Sustainability data
Contains Red List materials | Yes |
Country of material origin | Europe |
Country of product manufacture | Europe |
Recyclability | Geocells & Insulation Recyclable |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 25 % |
Third party certifications
BBA Agrément Certificate
97/3336 PermaQuik PQ6100
Literature
Radmat Blue Roof Brochure
AluBase XL PDS Nov 2019
EshaBase SA Alu 3mm Product Data Sheet
EshaBase Alu Product Data Sheet
EshaBase SA Alu 4.2mm Product Data Sheet
EshaPur 95/25 Oxidised Bitumen PDS
PermaQuik PQ6100 Hot Melt PDS
Radmat Blue/Green Roof Inspection Chamber PDS
SWB Geocell PDS
SWG Blue Roof Geocells PDS