Yeovil-based Cavity Trays Ltd has developed a ready-to-use solution to eliminate a reoccurring construction problem when building on contaminated land. Originally conceived for Radon gas situations, it is called the Type PAT – Protective Adjustable Threshold.
Where gas barriers are present within the external cavity walls of a building and the door openings interrupt the arrangement, maintaining gas-tight integrity and damp-proofing measures is always difficult. Commonly door openings are at a different level (access requirements) and interrupt the protective arrangement against rising gas.
Using flexible DPC requires support from higher courses and creates a cumbersome arrangement in which achieving a gas and water-tight arrangement that links with threshold and closers is difficult.
The Type PAT eliminates this problem.
The new Protective Adjustable Threshold (Type PAT) from Cavity Trays provides both gas and water protection under and to the sides of every opening and does so in a way that eliminates discontinuity and provides adjustable connection with adjacent barriers.
The Type PAT – Protective Adjustable Threshold – is a three-dimensional DPC unit that is bedded within the external wall opening. Integration between wall barriers and the Type PAT is achieved using the adjustable side connectors that attach to the Type PAT and slide up and down to the requisite level.
from SPECIFIER REVIEW https://ift.tt/2NWWX8P
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