Inter-loc Horizontal Cavity Trays

• Fits all clear cavity sizes up to 125mm
• Suitable for brick, block, and stone wall construction (cutting of masonry may be required)
• 150mm high back upstand exceeds minimum requirements of NHBC
• Angled section between cavities
• Interlocking mechanism for joining tray lengths to eliminate tray jointing
• Built to brick bonding lengths for ease of use
• Angled section between cavity tray base and rear upstand automatically sheds water to the outer leaf
• Built independent to the inner leaf will enable inner and outer leaves to be built independently, if required
• Available in two lengths: 4 brick for general use and 2 brick for reducing waste when making up a run of cavity tray to the required length
• The system is available upon request with pre-applied polystyrene strips
• Polystyrene is much easier to rake out than mortar and offers a visual locator of the cavity tray so aiding the installation of post fitted lead work – this may incur additional charge

• 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

• Horizontal Inter-loc units are injection moulded in 2mm polypropylene. Accessories are vacuum formed in 2mm medium density polyethylene.
• Available in black only.

Horizontal Inter-loc cavity trays
The main cavity tray component. Sections join together by means of a lapped interlocking join, 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 – one weep hole per Inter-loc tray is required.

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. Available in either external or internal format.

Stopends
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 either 50-125mm.
  Weep holes must be provided in every cavity tray to comply with Building Regulation requirements. These can be formed by installing a purpose made Timloc plastic wall weep unit.
• Each Inter-loc cavity tray fits to the next by means of a lapped interlocking join, as work proceeds while working from right to left.
• With rigid pre-formed cavity trays such as the Inter-loc system it is not necessary for the cavity tray to span all the way across the cavity. As long as the cavity tray stands back from the rear face of the external wall and projects back into the cavity far enough to intercept drips falling from the wall ties, then it will perform effectively.

• To calculate quantities, divide the overall length of the cavity tray run by .225 (representing one brick and joint) to give number of bricks required then divide by 2 for IL2 or 4 for IL4 to give tray quantity. Always round up to the next tray because excess length can be cut away.
• Please use stopends if the cavity tray has to be cut down to suit the project.
• Stopends will not be required when the cavity tray run is built within the body of the building i.e. bay windows. For this application, the integrated stopend can be built into the next available joint projecting past the abutting roof.