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What is a Geotextile underlay used for on an EPDM roof?

1. The Geotextile fleece underlay can be used on top of the rubber membrane to protect it from sharp objects when it is planned to cover the membrane with pebbles for fire protection.

2. Where a cement screed is being installed to provide a hard wearing surface for slabs or tiles on top of the rubber membrane the Geotextile fleece can be placed on top of the EPDM to protect it from sharps in the screed.

3. The Geotextile fleece can in certain circumstances be used under the rubber membrane when installing directly over the old roof. This will protect from sharps that may puncture the rubber membrane. In this scenario the rubber membrane can

not be glued in place - it is therefore secured using Russ strips (A Grid of mechanically fixed bonding strips) or ballasted in position with pebbles or a green roof. This third method is only applicable to ClassicBond EPDM.

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