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External Walls
Original price was: $20.00.$18.00Current price is: $18.00.
Secondly, in the event that water does penetrate the wall system, a drainable cavity ensures and maintains weather proofing.
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.