Horizontal Cavity Tray System


Manthorpe’s Horizontal Refurbishment Trays are designed for use in horizontal abutment situations, for retro fit details.

  • Description & Key Features

    Product Description

    The GW294 Refurbishment Horizontal Tray is designed to provide protection where a new horizontal roof abutment meets an existing wall. It can also be used where the original system has been found to have degraded or even left out of the wall construction.
    Alternatively it can be used in new build horizontal situations or in conjunction with the GW295 Horizontal Tray. Integral stop ends and a hook feature remove the need to overlap the trays giving a total effective length of 450mm.
    The tray has a unique front mortar clip that can be removed at any time once the mortar has set leaving a 25mm deep aperture into which the lead is inserted and secured with lead wedges.
    A G950 Weep Vent or G951 Peep Weep must be used in each tray to drain away the collected water.
    The GW294 Refurbishment Tray can also be supplied with short, standard or long lead stapled and sealed to the tray in either code 4 or code 5 (special order).

    Key Features

    • Part of the horizontal tray system
    • For refurbishment
    • Horizontal abutment trays
    • Integral stop-ends
    • Removable mortar strip for easy lead application
    • Additional handed stop-ends
  • Technical

    Fitting Requirements

    Trays should be positioned between 75-100mm above the finished roof line depending on the detail and lead drop required.

    Bed the trays down on to a thin layer of mortar, interlocking each tray over the adjacent tray at the stop end.

    A weep vent should be placed every 450mm to drain away any collected water.



    Regulations & Standards

    BS 5628-3:2005 Code of practice for the use of masonry.

    BS 8000-6:2013 Workmanship on building sites. Code of practice for slating and tiling of roofs and walls

    BS 8215:1991. Code of practice for design and installation of damp-proof courses in masonry construction.

    NHBC Standards 6.1

    BRE DIGEST 262/380

  • Specifications

    Size Information

    Length: 450mm

    Height: 155mm

    Suitable for cavity widths from 50mm to 100mm





    Quantity Information

    Packed in 25’s in cardboard box (unleaded)