Retrofit cavity wall barrier

Abstract

A fitting ( 1 ) for a cavity wall within a building comprises elongate member adapted to be supported within the cavity wall, two adjacent limbs being formed with a plurality of holes ( 4 ) extending along the length of the fitting so as to allow insulation into the fitting ( 1 ) the other adjacent limbs form a V-shape channel top of the fitting when installed, to collect water and to direct it to the ends of the fitting and out through the boundary wall of the cavity wall. The fitting ( 1 ) is of Cruciform cross-section. The fitting is placed in the cavity retrospectively. The Cruciform is provided almost flat from a reel when entering the cavity, then springs into the cruciform cross-section when the elongate member is straitening in the cavity, and fit tightly within the cavity. Further, the fitting can be inserted into the cavity wall from inside the building or outside the building.

1 . A fitting for retrospective installation in a cavity wall comprising an elongate member for installation within the cavity, the member being of cruciform cross section, having four limbs extending from a centre, two adjacent ones of the four limbs each having a row of holes formed therein to allow passage of insulation material into the spaces formed between each holed limb and its respective other adjacent limb, the two other adjacent limbs being adapted to form the top of the fitting when installed, so that they form a V-shaped channel to collect water and channel it to the end of the fitting and away from the cavity. 
     
     
         2 . A fitting according to  claim 1 , which is supplied on a reel, with the cross-section flattened, whereby the fitting springs into its cruciform shape, as it straightens on insertion into the cavity space. 
     
     
         3 . A fitting according to  claim 2 , each fitting being supported in the cavity from below by a plurality of support means, comprising of a metal pin or shaft extending transversely of the cavity. 
     
     
         4 . A fitting for a cavity wall substantially as described herein.