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Protech GM HM - 2 Pages

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Catalogue excerpts

ACHIEVES 2 POINTS WHEN PROFESSIONALLY INSTALLED AND INDEPENDENTLY VALIDATED, UNDER THE BS8485 TABLE 3 SCORING SYSTEM • HIGH RISK CHARACTERISTIC SITES • REGULATIONS COMPATIBILITY TABLE CIRIA 665 CHARACTERISTIC SITUATION 2 CIRIA 665 CHARACTERISTIC SITUATION 3-6 CARBON DIOXIDE HYDROCARBON VAPOURS & LIQUID DESCRIPTION Protech GM HM is a high impact proprietary hydrocarbon and gas resistant barrier, with outstanding chemical resistance, mechanical properties, environmental stress crack resistance, dimensional stability and thermal ageing characteristics, that has been specifically designed to conform with the latest guidance documents. Due to its composition, the membrane is extremely robust and therefore reinforced steel can be placed directly on the membrane without the need for a protection board prior to the floor being cast. The membrane is also ideally suited for laser screed applications. The membrane also provides protection from Damp and therefore there is no need to install a separate DPM. SPECIFICATION Ciria 665, BS8485 & Local Authority Ground Gas Handbook recommends that membranes are specified on the basis of the need to survive construction, i.e. use one that is puncture and tear resistant. Thickness should not be the main determinant of the suitability of a membrane for a particular site, although it can indirectly influence some key performance parameters. In practise, because of the nature of construction sites, the durability, survivability and robustness of membranes are equally important than purely permeability to gas. If installed incorrectly or damaged during the construction process, the membrane is rendered ineffective and will fail to provide adequate protection against the ingress of ground gas or vapours. TYPICAL PROPERTIES * Roll Length PHYSICAL CHARACTERISTICS The need for high quality workmanship during installation should not be under-estimated. The health and safety of the occupants of the building is dependent on its satisfactory performance. Tensile Strength @ Yield Tear Resistance @ ASTM D 1004 Protech GM HM is 1mm thick and has a high puncture resistance to ensure that maximum protection is achieved from follow on trades when installed to manufacturers’ instructions. Tensile Strength @ Break ASTM D-638 Puncture Resistance Tear Resistance Petrol Vapour Transmission Rate (g/m2/h) Various roll sizes available.

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PROTECH GM HM REQUIRED ACCESSORIES •Protech GR-DPC •Protech GM Tophats •Protech SAGM (Self Adhesive Gas Membrane) •Protech GM Flashing Strip •Protech GM Corner Units •Protech GM Primer •Protech GM 3mm Protection Board •Protech GM Protection Fleece VENTING On sites where venting is required, our Provoid Venting System should be used. We can provide design advice for both passive and active venting systems to suit individual site requirements. JOINTING PROCEDURE Protech GM HM should be unrolled over the prepared ground or sub-floor which should be free from any sharp protrusions. When the membrane...

 Open the catalogue to page 2

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