When building in natural stone, there are two popular methods of construction. The traditional method is to build against a backing skin of blockwork, behind which is the cavity and inner leaf. The result is an external leaf commonly around 250mm thick, as it really consists of two bonded materials. The alternative method that is rapidly gaining popularity is to dispense with the backing skin altogether, and instead build the external stone skin against a DPC barrier that separates outer and inner skins whilst maintaining a cavity gap with its moulded shape – the barrier being called Surecav.
In both instances, the resultant construction requires proportionally deeper protective DPC’s over openings and intersections, and Cavity Trays Ltd has now extended its range of products to address all such requirements.
The new house shown in the picture is built of Ham stone sourced from Somerset. The stone is coursed at 150mm. Where the gable abuts the end wall of the main house, preformed Muilticourse Cavitrays provide protection extending through the composite 250mm external skin and across and upwardly in the 75mm cavity. Each Multicourse tray is moulded with an inboard upstand that rises to link with the higher tray.
Continue reading 2019 New Solutions – Cavitray Compliant Walls at SPECIFIER REVIEW.
source https://specifierreview.com/2018/11/12/cavitray-compliant-walls/
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