Bakor 790-11 hot-applied monolithic membrane

Approved for use on

Blue Roofs Green Roofs Inverted Roofs Roof Gardens Zero Falls Buried Roofs 

For use as a waterproofing layer forlimited or pedestrian access roofs in:•inverted roof specifications using aggregate ballast and paving on flat roofs, including zero fall roofs

• protected roof specifications, eg covered by pavers or other suitable protection on flat roofs, including zero fall roofs
• green roof (extensive and biodiverse living roof) specifications on flat roofs, including zero fall roofs or pitched roofs with limited access, and roof garden (intensive) specificationson flat roofs, including zero fall roofs
• blue roof specifications in combination with a stormwaterattenuation system(1), on flat roofs, including zero fall roofs

(1) The stormwater attenuation system is outside the scope of this Certificate.

Substrate

Concrete Fibre Cement Metal Timber 

The system is suitable for use on the following substrates:
• in-situ precast concrete or concrete block
• lightweight structural concrete subject to the Certificate holder’s recommendations
• timber (exterior grade plywood, OSB3, composite timber or sawn timber)
• metal (upstands and flat substrates)
• calcium silicate board substrates.

Durability

Design Life of the Roof 

The Bakor 790-11 Hot-Applied Monolithic Membrane Roofing System will provide an effective barrier to the transmission of liquid water and water vapour for the design life of the roof in which it is incorporated.

Installation Requirements

The system should only be installed by trained contractors using specialist equipment. Details of these are available from the Certificate holder.

Fire Safety

In the opinion of the BBA, a roof incorporating the system will be unrestricted under the national Building Regulations in the following circumstances:

• a roof garden covered with a drainage layer of gravel 100 mm thick and a soil layer 300 mm thick
• when protected by an inorganic covering (eg gravel or paving slabs) listed in the Annex of Commission Decision 2000/553/EC.

In the opinion of the BBA, the use of the system in irrigated green roofs, biodiverse living roofs or roof gardens will also be unrestricted under the national Building Regulations.

The designation of other specifications should be confirmed by: England and Wales — test or assessment in accordance with Approved Document B, Appendix A, clause 1. Scotland — tests to conform to Mandatory Standard 2.8, clause 2.8.1(1)(2) (1) Technical Handbook (Domestic).
(2) Technical Handbook (Non-Domestic). Northern Ireland — test or assessment by a UKAS-accredited laboratory or an independent consultant with
appropriate experience.

If allowed to dry, plants used in a roof garden may allow flame spread across the roof. This should be taken into consideration when selecting the plants. Appropriate planting irrigation and/or protection must be applied to ensure the overall fire rating of the roof is not compromised.