Protech GM Tophats are available in all popular pipe sizes including our standard 110mm, 130mm and 160mm and also bespoke sizes when required.

1.Trim Protech GM Super Gas Membrane around pipe penetration.

2. Fix Protech GM Tape to underside of tophat flange 20mm from edge, ensuring that there are no gaps between the strips of tape at each corner.

3. Remove the release paper from the Protech GM Tape and slide the Protech GM Tophat over the pipe and push down onto Protech GM Super Gas Membrane.

4. Ensure that the Protech GM Tophat is adhered to the Protech GM Super Gas Membrane.

5. Cut a strip of Protech GM Flashing Strip and and seal around the collar of the Tophat against the pipe and the base of the Tophat.

The above information is based on current test data, health and safety information and application instructions supplied by our suppliers and manufacturers of the products. It is supplied for guidance and to the best of our knowledge is true and accurate. Customers should satisfy themselves to the suitability of the products in its intended use and no guarantee is given or implied as the conditions of actual use are beyond our control. If in doubt the customer should consult the designer of the project or the local building control. 

Fire Stopping Shop, disclaim any liability for loss, damage or other expense which may arise from the use of this information, data or products refereed to and reserve the right to amend or change any details without notice. This statement does not affect your statuary rights.