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External Walls

Original price was: $20.00.Current price is: $18.00.

Secondly, in the event that water does penetrate the wall system, a drainable cavity ensures and maintains weather proofing.

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Product Description

The technical details provided for weather proofing are based on the design principle of employing both a 1st and 2nd line of defense against moisture entry. Firstly, moisture ingress must be pre vented by detailing any joinery or wall junctions as shown in this Design & Installation Manual.

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