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BBA approved pre-formed stepped cavity tray system for installation at the abutment of a pitched roof with an external cavity wall supplied without integral lead flashing. For external walls not exceeding 150mm thickness and built from blockwork or stone with regular course heights, including mortar, of approximately 225mm and clear cavity widths of between 50mm and 125mm cavity trays to suit clear cavity widths of 126mm + are available to order. Choice of 2 cavity tray lengths to suit specific roof pitches with a variety of base widths for different wall thicknesses and clear cavity width combinations. Also available fitted with integral lead flashings or with supplied with mortar barrier strips to aid the installation of post fitted lead flashing. In comparison to alternative on-site DPC fabricated methods; preformed cavity trays present many features and benefits including reliability, speed of installation, reduced cold bridging opportunity and site waste.
|Size & Weight|
|Max Length (?)||1250 mm|
|Max Width (?)||125 mm|
|Min Length (?)||450 mm|
|Min Width (?)||50 mm|
|Thickness (?)||2 mm|
|Certifications & Ratings|
|Certifications (?)||BBA, ISO 9001, ISO 14001|
|Typical Use (?)||External walls, Roofs|
|Materials & Finishes|
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