An injection-moulded polypropylene box with a polyester foam gasket fixed to the sides.

The product will limit unwanted air leakage between a ceiling void and an external wall cavity and thereby minimize heat loss by air.

  • Available in a range of sizes to fit on the end timber joists and I-beams.
  • Knock-out tabs around the box flange provide slots for restraint straps to be fixed to the joist and wall where required.
  • Joist seals solve the problem of air leakage associated with built in timber joists.
  • They are designed to meet the requirements of Part L Building Regulations regarding increased insulation and air leakage and provide an effective and easy to install solution.

Options

Product reference:

- Type G912 Joist seal:

  • Joist height: 225 mm.
  • Joist width: 40–150 mm.
  • Blockwork depths: 100–140 mm

- Type G913 Joist seal:

  • Joist height: 302 mm.
  • Joist width: 38–180 mm.
  • Blockwork depths: 100–140 mm.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-60-90/360 Softwood sections

Product specification

An important note about specifying

Manufacturer

Name:

Manthorpe Building Products Ltd

Tel:

+44 (0)1773 514200

Product reference

[G912]
[G913]

Size

[225 x 40 mm]
[225 x 48 mm]
[225 x 65 mm]
[225 x 75 mm]
[225 x 90 mm]
[225 x 100 mm]
[225 x 150 mm]
[302 x 38 mm]
[302 x 45 mm]
[302 x 60 mm]
[302 x 76 mm]
[302 x 90 mm]
[302 x 120 mm]
[302 x 150 mm]
[302 x 180 mm]

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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