System 2000 Horizontal Cavity Trays – Lead Attached

Horizontal leaded cavity tray system for all types of brick, block, and stone new build constructions.

Low profile taped lapped joints to securely join cavity tray lengths together and create a watertight run.


  • At abutment of a lean-to, flat or mono pitch roof and cavity wall
  • On external walls – not exceeding 102.5mm in thickness – built from standard brickwork, blockwork or stone
  • Clear cavity widths of between 50mm-125mm

Product Information

System 1000 horizontal cavity trays

DescriptionLength50-74mm Cavity Width*75-99mm Cavity Width*100-125mm Cavity Width*
Horizontal tray880/830mm2075/880/50 2075/880/75 2075/880/100
Horizontal tray460/440mm2075/460/502075/460/752075/460/100
External 90° cornerShort lead2010L150/502010L150/752010L150/100
External 90° cornerLong lead2010L300/502010L300/752010L300/100
Internal 90° cornerShort lead2011L150/502011L150/752011L150/100
Internal 90° cornerLong lead2011L300/502011L300/752011L300/100
External 135° corner Long lead2012L300/502012L300/752012L300/100
Internal 135° cornerLong lead2013L300/502013L300/752013L300/100
Stopend RHN/A2003/502003/752003/100
Stopend LHN/A2004/502004/752004/100

*Product code to suit cavity width. Trays to suit clear cavity widths of 126mm+ can be made to order. Eg. 2075/880/50/L150 *

  • Supplied with factory fitted lead flashing, cut ready for dressing
  • 150mm high back upstand exceeds minimum requirements
  • Low profile lapped joint between sections allows any length of brick, block, or stone to be used without difficulty
  • Angled section between cavity tray base and rear upstand automatically sheds water to the outer leaf
  • Cavity tray builds into the outer leaf only to speed up installation and allow both inner and outer leaves to be built independently
  • Choice of two lengths: 880mm for general use; 460mm to reduce waste when making up a run of cavity tray to the required length
  • Manufactured to BS EN ISO 9001 and BS EN ISO 14001
  • Complies with all relevant Building Regulations
  • Meets all relevant British Standards and NHBC requirements
  • Vacuum formed in 2.0mm thick rigid polyethylene. Black only.
  • Flashings are Code Blue (milled lead as standard) as defined by BS EN 15288:1999 (formally known as Code 4).

Horizontal cavity trays
The main cavity tray component. Sections join together by means of a lapped joint, sealed with factory applied butyl mastic tape, to form the main cavity tray run. Water is gathered by the cavity tray and is discharged from the wall through a series of weep holes.

Corner units
Allows the integrity of the main cavity tray run to be maintained when it is necessary to turn a corner on a building. External or internal.

Fitted at the start and finish of the cavity tray run to seal off the open ends and prevent water running back into the cavity.

  • Each component is available to suit cavity widths of 50-74mm, 75-99mm and 100-125mm – please select the correct width.
  • Weep holes must be provided every 900mm along the cavity tray run to comply with Building Regulation requirements. These can be formed by installing a purpose made Timloc plastic wall weep unit.
  • Each component fits to the next by means of a lapped joint that is sealed with butyl mastic tape.
  • Surfaces must be clean and dry otherwise a good seal will not be formed. In areas of severe weather exposure, customers should consider specifying a heavier code of lead and/or mechanically fixing and sealing the lead to prevent uplift.
  • To calculate quantities, divide the overall length of the cavity tray run by 830mm. If the calculation does not come to an exact figure, round up to the next whole number. The 410mm length can be used as a make-up piece to reduce waste and cost.
  • If the cavity tray is required to turn a corner, ensure that the correct corner units are ordered.
  • Always order stopends – typical installations require one right hand and one left hand stopend for the start and finish of the run.
  • Always state the clear cavity width when ordering.
  • State whether long (300mm) or short (150mm) leads are required. Long leads are used where flashing is required to dress directly over the top of the roof tile. Short leads are used where there is a soaker or secret gutter detail.

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


  • Manufacturer: Timloc Building Products, Timloc House, Ozone Park, Howden, East Yorkshire, DN14 7SD. T: 01405 765567 W:
  • Type(s) and location(s): Cavity tray supplied with attached lead flashing to be installed over horizontal roof abutments on new build applications.
  • Build in carefully in accordance with manufacturer’s recommendation to ensure a fully watertight installation.
  • Cavity Width
  • Reference: e.g. 2075/880 L (830mm effective length) 150mm lead
  • Optional Accessories: e.g. 2010 L External Corner 90 Degree (150mm lead)

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