Bakor 790-11EV hot-applied monolithic membrane Roofing System

Manufacturer: Bauder Limited

Materials: Hot Applied Polymer Modified Bitumen (Hot Melt)

The Bakor 790-11EV Hot-Applied Monolithic Membrane Roofing System is applied in two layers sandwiching a reinforcement layer, to provide a waterproofing layer with a nominal coating thickness of 6 mm. The system consists of:

• Bakor 790-11EV Monolithic Membrane — a formulated waterproofing membrane based on a combination of refined bitumen, synthetic rubbers, 25% recycled rubber content and other additives
• Bauder Polyester Reinforcement Sheet — a 60 g·m–2 spunbonded polyester reinforcing scrim
• Bauder Butyl Flashing — 1 mm thick, flexible detailing sheet, used to reinforce the membrane at expansion joints where movement is likely to occur, and for details and upstands
• Bauder Neoprene Flashing — 1 mm thick, flexible detailing sheet, used to reinforce the membrane at expansion joints where movement is likely to occur, and for details and upstands
• Bauder AP2 Protection Sheet — polyester-based, mineral-surfaced, root-resistant bitumen protection sheet
• Bauder AP3 Protection Sheet — high-density polymeric protection sheet
• Bauder Quick Dry Bitumen Primer — for surface preparation
• Bauder Polymer Primer — for surface preparation
• Bauder K4E Protection Sheet — polyester-based, mineral surfaced, bitumen protection sheet for exposed detailing (subject to BBA Certificate 10/4744 Product Sheet 3)
• Bauder K5E Protection Sheet — polyester-based, mica-surfaced, bitumen heavy duty protection sheet for use under hard landscaping (subject to BBA Certificate 10/4744 Product Sheet 1).

Number: 06/4350 PS1
Issue date: 15/11/2018

Approved for use on

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

For use as a waterproofing layer on flat (including zero fall) roofs with limitedor pedestrianaccess in:

inverted roof specificationsusing aggregate ballast and paving on flat roofs, including zero fall roofs with limited access
protected roof specifications, eg covered by pavers or other suitable protectionon flat roofs, including zero fall roofs
green roof(extensive and biodiverse living roof) specifications on flat roofs, including zero fall roofswith limited access or pitched roofs with limited access,and roof garden(intensive)specifications•blue roof specifications in combinationwith a stormwater attenuation system(1), including zero fall roofs.

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

Substrate

Concrete Timber

The system is suitable for use on in-situ concrete, precast concrete, concrete block and timber substrates. The substrates must comply with the relevant requirements of BS 6229 : 2003 and where appropriate, NHBC Standards 2018, Chapter 7.1.

Durability

Design Life of the Roof

The Bakor 790-11EV 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

The system, when used in protected or inverted roof specifications, including an inorganic covering listed in the Annex of Commission Decision 2000/553/EC, can be considered to be unrestricted under the national Building Regulations.

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

The membrane must always be used under a protective surface. The fire rating of the roof is dependent on the finish and the insulation used, the designation of which should be confirmed by: England and Wales — test or assessment in accordance with Approved Document B, Appendix A, clause A1. Scotland — test to confirm to Mandatory Standard 2.8, clause 2.8.1. 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.