AIR CIRCULATION BOARD FOR CAVITY WALL CONSTRUCTION

摘要

A corrugated board ((32) is secured to the inner wall (12) of a cavity wall construction (10) to establish a defined spacing (25) between the inner and outer walls (12, 13) and prevent excess mortar from bridging (28) to the inn er wall (12). The corrugated board (32) has a series of spaced channels, furrow s or grooves (34) into which an anchor (24) projects into the studs (16) of th e inner wall (12) to secure the outer wall (13). The corrugated board (32) is installed prior to the construction of the outer wall (13) and establishes a minimum spacing or gap (25) between the walls (12, 13) based upon the thickness of the board (32). The outer wall (13) is constructed immediately adjacent to the outer face of the corrugated board (32). The grooves or channels (34) of the corrugated board (32) create a chamber for vapor and ai r circulation. The board (32) eliminates bridging by the mortar (22) and provides an air conduit to exhaust even the minimal amounts of vapor that wi ll occur in the cavity (25).