Top Hats are designed to form an effective seal where a pipe, duct or service penetrates a construction membranes. Each unit is manufactured from a material that has the same properties as the membrane type being used, in order to provide continuous VOC, ground gas and/or damp proof protection.
Each Top Hat unit is supplied to suit the number and diameter of the penetration and can be installed as part of either a welded or taped installation.
Provides an effective seal around pipe, duct and service penetrations within construction membranes.
Please see suitability table below:
|Product||Puraflex Membrane||Purflex Tank||MB420 Membrane||Gas Resistant Self Adhesive Membrane||Radon Membrane|
|Puraflex Top Hat|
|MB420 Top Hat|
|HDPE Top Hat|