Everdry Stepped Cavity Trays for Brickwork – Lead Attached

• Supplied with factory fitted lead flashing ready cut to suit the pitch of the roof and type of roof covering
• High back upstand
• Adjustable upstand to cover 50mm-110mm clear cavities
• Roof pitch marks on tray upstand to give installation guidance
• Cavity tray builds into outer leaf only to speed up installation and allowing both inner and outer leafs to be built independently

• BBA Approved
• Satisfies all NHBC requirements
• Manufactured to BS EN ISO 9001 and BS EN ISO 14001
• Complies with all relevant Building Regulations
• Meets all relevant British Standards

• Flashings are Code Blue milled lead as standard as defined by BS EN ISO 12588: 1999 (formally known as Code 4). All components in the range are injection moulded in 2mm polypropylene for added durability, toughness and quality.
• Available in black only.

Intermediate trays
Suits all cavity options – forms main tray run with one tray on each course of brickwork running the full length of the abutting roof slope.

Stopend starters
First component to be installed and fitted at the lowest point on a standard abutment. It collects water gathered by the rest of the system and discharges it from the wall through a weep unit.

Corner starter trays
Has same function as stopend starter tray but is used where the abutting roof comes up to, or beyond, the corner of the main building. Designed to return around the corner of the building to provide complete protection.

Ridge trays
Used where a right-hand and left-hand roof slope come together at an apex to straddle the top two intermediate tray.

• The core tray will suit clear cavity widths of 50-110mm.
• Weep holes in starter and corner starter trays can be formed simply by installing purpose made Timloc plastic wall weep units (product 1143/ Invisiweep).
• In areas of severe weather exposure, long continuous run of cavity trays and/or where particularly porous facing brickwork is used, we strongly recommend that extra weep holes are used at intermediate points along the run of cavity trays. Heavier code lead may also need to be specified with flashings fixed and sealed where they overlap.
• Many components come in left or right-handed versions. Handing is dictated by the direction of the abutting roof slope.

• The core tray will suit clear cavity widths of 50-110mm.
• Weep holes in starter and corner starter trays can be formed simply by installing purpose made Timloc plastic wall weep units (product 1143/ Invisiweep).
• In areas of severe weather exposure, long continuous run of cavity trays and/or where particularly porous facing brickwork is used, we strongly recommend that extra weep holes are used at intermediate points along the run of cavity trays. Heavier code lead may also need to be specified with flashings fixed and sealed where they overlap.
• Many components come in left or right-handed versions. Handing is dictated by the direction of the abutting roof slope.

F30 Accessories/sundry items for brick/block/stone walling

Clause 370 | PREFORMED CAVITY TRAY / ACCESSORIES

• Manufacturer: Timloc Building Products, Timloc House, Ozone Park, Howden, East Yorkshire, DN14 7SD. T: 01405 765567 W: www.timloc.co.uk
• Type(s) and location(s): Cavity tray with attached lead to be installed into brickwork over stepped/sloping roof abutments on new build and remedial work applications.
• Build in carefully in accordance with manufacturer’s recommendations to ensure a fully watertight installation.
• Reference: e.g. 20001 Intermediate Tray (RH)
• Cavity width: 50mm – 110mm
• Roof pitches: 15° – 60° (please stipulate)
• Lead attachment: e.g. Code Blue short or long (please stipulate)
• (short lead – flat tiles/slates) (long leads – profiled roof tile)

Stepped cavity trays are used where a pitched roof abuts a cavity wall. To calculate the quantity of trays required to cover a section of roof abutment one of three measurements must be determined, either the vertical height or the sloping or horizontal length of the abutment. If the vertical height is measured, simply divide this distance by the coursing height of the material being used for construction. E.g. If the vertical height is 1.5m and the wall is standard 75mm brick coursing (NB 75mm = 0.075m) the equation would be 1.5 ÷ 0.075 = 20. Therefore 20 No. cavity trays are required per sloping abutment.

If the sloping or horizontal distance has been measured the tables shown below should be used to convert the distance (measured in metres) into the quantity of cavity trays. Take care to select the correct table and the appropriate column which relates to the coursing height and the pitch of the abutting roof. E.g. If the sloping measurement is 2.5m, at a pitch of 30°,with a 75mm brick coursing height the equation would be 2.5 x 6.7 = 16.75. This would be rounded up, so 17 No. cavity trays are required. E.g. If the horizontal measurement is 1.5m, at a pitch of 40°, with a 75mm brick coursing height the equation would be 1.5 x 11.2 = 16.8. This would be rounded down, so 16 No. cavity trays are required.