Flashing weatherproofs the visible roof-to-wall junction. A cavity tray sits within masonry and intercepts water moving inside the cavity.
Weatherproof Junctions for Roof Abutments and Masonry
Roof leaks often begin where coverings meet walls, chimneys or penetrations. Flashings dress over the junction, while cavity trays intercept moisture inside masonry and direct it back outside through the specified outlets.
Select the material and profile from the construction detail. Flashing and cavity tray components must suit the roof pitch, wall type and exposure. Trays need stop ends and weep provision where specified, and stepped abutments require carefully sequenced units.
Form laps, chases and corners without puncturing the water path. Coordinate roof coverings through slates and tiles, seal only the joints approved for roofing sealants, and keep cavity insulation clear of drainage routes.
Flashing Cavity Trays FAQ's
Where the design requires drainage, trays discharge through weep openings in the outer leaf. Follow the spacing and stop-end detail for the system.
Only where the product is approved for that exact detail and expected life. Temporary repair tapes should not be treated as permanent flashing by default.
Overlap and cover depend on roof pitch, exposure, tile profile and flashing system. Use the detailed drawing or manufacturer instructions.
Sealant may hide failed laps, trays, chases or pointing. Trace the full water path and repair the underlying detail rather than adding surface mastic alone.