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 DESCRIPTION Protech GM Super is a high performance proprietary reinforced gas barrier, that incorporates a 12 micron aluminium foil layer, for maximum protection against ground-borne gases. Protech GM Super can be used to protect against Hydrocarbon Vapours when not in direct contact with the ground i.e above block and beam floor design. This has been specifically designed to conform with the latest guidance documents. Due to its unique composition, the membrane is extremely robust and flexible and, therefore, easy to install on site. 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 recommended that gas 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. Protech GM Super incorporates a reinforced grid to ensure that maximum protection is achieved when installed to manufacturers’ instructions. 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. 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. APPROVAL INSPECTION TESTING CERTIFICATION TYPICAL PROPERTIES Roll Length Green / Silver REQUIRED ACCESSORIES •Protech GM Super Starter Band •Protech GM Tape •Protech GM Tophats •Protech SAGM (Self Adhesive Gas Membrane) •Protech GM Flashing Strip •Protech GM Super 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. www.proctorgroup.com The Haugh, Blairgowrie, Perthshire, PH10 7ER Tel: 01250 872 261 Fax: 01250 872 727 email: [email protected]

PROTECH GM SUPER TAPED JOINT INSTALLATION PROCEDURE STEP 1 Roll out Protech GM Super Gas Membrane and apply Protech GM double sided tape 50mm from edge of Protech GM Super Gas Membrane as shown below. Run a stiff brush down the Protech GM double-sided tape to ensure it is well adhered to Protech GM Super Gas Membrane. STEP 2 Roll out next sheet of Protech GM Super Gas Membrane maintaining a minimum 150mm overlap with bottom sheet. Membrane to expose the Protech GM double-sided tape. Pick the release paper from the top of the Protech GM double-sided tape and pull the release paper away from the...