Home > Companies > Manthorpe Building Products Ltd > Intermediate Cavity Trays

Manufactured from injection moulded the trays are available for stepped blockwork or stone details.

The products are supplied with or without lead attachment and are suitable for pitches 17.5 to 50º.

Manthorpe cavity trays have been assessed by the British Board of Agrèment.

Options

Type GW291 RH Intermediate Trays Right Hand:

  • Designed for building up the finished roof line in a stepped fashion and incorporate an upstand at one end only, allowing water to travel down the cavity tray system.
  • Type GW 291 Intermediate tray features an injection moulded mortar trap which ensures a clear water path, by reducing the risk of mortar droppings and other debris from blocking the tray.
  • The tray has a unique front mortar clip, removable once the mortar has set, leaving a 25 mm deep aperture into which lead is inserted and secured with lead wedges.
  • The GW 291 Intermediate tray can be supplied unleaded or with short or long lead, stapled and sealed to the tray.
  • Suitable for pitches 17.5 to 50º, 75 mm coursing.

Type GW292 LH Intermediate Trays Left Hand:

  • Specification as GW 291 RH but left handed.

Type GW 291 SBS RH Short Block / Stonework Intermediate Tray Right Hand:

  • Designed for larger course heights, typically 150 or 225 mm in either stonework or blockwork, and incorporates an upstand at one end only.
  • The flexible perpend protector attached to the tray prevents driving rain penetrating the outer wall and tracking across the masonry.
  • The tray has a unique front mortar clip that can be removed at any time once the mortar has set leaving a 25 mm deep aperture into which the lead is inserted into and secured with lead wedges.
  • The GW 291 SBS Intermediate tray can be supplied unleaded or with short or long lead, stapled and sealed to the tray.

Suitable for pitches:

  • 35 to 50º, 225 mm coursing.
  • 25 to 50º, 150 mm coursing.

Type GW 292 SBS LH Short Block / Stonework Intermediate Tray Left Hand:

  • Specification as GW 291 SBS RH above but left handed.

Type GW 291 LBS RH Long Block / Stonework Intermediate Tray Right Hand:

  • Designed for low pitches in typically 150 mm or 225 mm in either stonework or blockwork, and incorporates an upstand at one end only.
  • The flexible perpend protector attached to the tray prevents driving rain penetrating the outer wall and tracking across the masonry.
  • The tray has a unique front mortar clip that can be removed at any time once the mortar has set leaving a 25 mm deep aperture into which the lead is inserted into and secured with lead wedges.
  • The GW 291 LBS Intermediate tray can be supplied unleaded or with short or long lead, stapled and sealed to the tray.

Suitable for pitches:

  • 17.5 to 34º, 225 mm coursing.
  • 12 to 24º, 150 mm coursing.

Type GW 292 LBS LH Long Block / Stonework Intermediate Tray Left Hand:

  • Specification as GW 291 LBS RH above but left handed.

Lead flashing:

Leaded trays available with the following:

  • Short lead code 4–75 mm drop.
  • Standard lead code 4–150 mm drop.
  • Long lead code 4–300 mm drop.
  • Standard lead code 5–150 mm drop.
  • Long lead code 5–350 mm drop.

(Code 5 lead is supplied to special order).

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-25-20/415 Preformed cavity trays

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying

Manufacturer

Name:

Manthorpe Building Products Ltd

Tel:

+44 (0)1773 514200

Product reference

[GW 291]
[GW 292]
[GW 291 SBS]
[GW 292 SBS]
[GW 291 LBS]
[GW 292 LBS]

Lead flashing

[Short lead code 4]
[Standard lead code 4]
[Long lead code 4]
[Standard lead code 5]
[Long lead code 5]
[Not required]

Manufacturer details

Manthorpe House,
Brittain Drive,
Codnor Gate Business Park,
Ripley,
Derbyshire, DE5 3ND
Tel +44 (0)1773 514200
Fax +44 (0)1773 514261
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