A range of insulated cavity closers for use in cavity wall constructions of widths from 50 mm upwards.

The products are designed for use at door and window openings, providing a damp proof barrier between inner and outer wall leaves without forming a thermal bridge.

Manthorpe range of cavity closers can accommodate standard window reveals, and rebated check reveals.

Options

Product reference:

- Type G240 Rigid cavity closer with double flange:

  • BBA approved.
  • Comprising a core of CFC-free, 27 mm polystyrene insulation with a fire retardant additive, with extruded PVC-U sections push-fitted either side.
  • PVC-U sections incorporate fixing channels (ribbed flanges include fixing holes in the flange).
  • Suitable for use where the inner and outer masonry leaves are in line.
  • Meets the required U-value at the reveal of door and window openings when the frames are fixed to allow a 15 mm overlap into the cavity.
  • Widths: 50 mm, 65 mm, 75 mm, 90 mm, 100 mm, 150 mm. Intermediate sizes are available on request.
  • K-value: 0.035 W/m·K.

- Type G242 Rigid cavity closer with single flange:

  • BBA approved.
  • Comprising a core of CFC-free, 27 mm polystyrene insulation with a fire retardant additive, with extruded PVC-U sections push-fitted either side.
  • PVC-U sections incorporate fixing channels (ribbed flanges include fixing holes in the flange).
  • Suitable for use where the brickwork is rebated to the blockwork.
  • Widths: 50 mm, 65 mm, 75 mm, 90 mm, 100 mm, 150 mm. Intermediate sizes are available on request.
  • K-value: 0.035 W/m·K.

- Type G243 Flexible cavity closer with double flange:

  • BBA approved.
  • Comprising a core of CFC-free, 24 mm polystyrene insulation with a fire retardant additive, with extruded PVC-U sections push-fitted either side.
  • PVC-U sections incorporate fixing channels (ribbed flanges include fixing holes in the flange).
  • Type G243 is suitable for use with circular and arched openings.
  • Widths: 50 mm, 65 mm, 75 mm, 90 mm, 100 mm, 150 mm. Intermediate sizes are available on request.
  • K-value: 0.035 W/m·K.

- Type G244 Flexible cavity closer with single flange:

  • BBA approved.
  • Comprising a core of CFC-free, 24 mm polystyrene insulation with a fire retardant additive, with extruded PVC-U sections push-fitted either side.
  • PVC-U sections incorporate fixing channels (ribbed flanges include fixing holes in the flange).
  • Type G244 is suitable for use with circular and arched openings.
  • Widths: 50 mm, 65 mm, 75 mm, 90 mm, 100 mm, 150 mm. Intermediate sizes are available on request.
  • K-value: 0.035 W/m·K.

- Type G249F 30 Minute Fire Rated Cavity Closer:

  • Comprising an enclosed box construction with a fibre insulating core, providing a solution to cold bridging and acting as a damp proof course and 30 minute fire barrier.
  • The unique compressible clip feature allows the product to expand within the cavity, creating a continuous seal.
  • Type G249F is suitable for new and refurbishment projects.
  • Cavity widths: 50–70 mm, 70–90 mm, 90–110 mm, 110–130 mm.
  • K-value: 0.039 W/m·K.
  • Performance: Designed to comply with The Building Regulations Part L and Scottish Technical Standards Part D.

- Type G249R 30 Minute Fire Rated Cavity Closer:

  • Comprising an enclosed box construction with a fibre insulating core, providing a solution to cold bridging and acting as a damp proof course and 30 minute fire barrier.
  • The unique compressible clip feature allows the product to expand within the cavity, creating a continuous seal.
  • Type G249R is suitable for new and refurbishment projects.
  • Cavity widths: 50–70 mm, 70–90 mm, 90–110 mm, 110–130 mm.
  • K-value: 0.039 W/m·K.
  • Performance: Designed to comply with The Building Regulations Part L and Scottish Technical Standards Part D.

Accessories:

- G245 Fixing clip:

Designed to tie the Manthorpe cavity closer into the brickwork / blockwork coursing. Alternatively it can also be used to join lengths of cavity closer together.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-25-20/455 Plastics cavity closers

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 303000

Product reference

[G240]
[G242]
[G243]
[G244]
[G249F]
[G249R]

Accessories

[Not required]
[G245 Fixing Clip]
[G246 Right Angle Fixing Clip]
-
Used to form cavity frames.

Manufacturer details

Manthorpe House,
Brittain Drive,
Codnor Gate Business Park,
Ripley,
Derbyshire, DE5 3ND
Tel +44 (0)1773 303000
Fax +44 (0)1773 303300
NBS Plus