Manthorpe G912 Joist Seal 100mm x 100mm - Translucent White

Product Code:
Est. Delivery: 3-5 Working Days
View Transport Policy

All delivery charges are included in the final shopping basket and are dependent on the products Scottish Highlands & the Islands where additional shipping charges will apply.

Please note that not all products will incur an additional delivery charge to the Scottish Highlands & the Islands – this is based on the costs from the manufacturer, distributor or courier providing shipping on our behalf. If your delivery address is in the Scottish Highlandsand Islands, a member of our helpline team will contact you prior to processing your order should an additional delivery charge apply.

While we make every effort to ensure orders are delivered by the date required, we cannot guarantee availability from the manufacturer or the manufacturer's delivery schedules.

Any variation to web delivery date given will be advised to you by email or telephone. If we are unable to make delivery because access is not possible, we reserve the right to make a failed delivery charge.

£5.22 Incl. VAT
£4.35 Ex. VAT
Oops! Please select from the options

Product Description

Manthorpe G912 Joist Seal 100mm x 100mm - Translucent White

Width : 100mm.
Block size : 100mm.
Height : 225mm.

Product information
The G912 range is designed to solve theproblems of air leakage associated with built intimber joists. The box is placed over the end ofthe joist and built into the inner leaf of theexternal wall construction.

As the timber driesout and shrinks the seal is still maintainedbetween the box and the masonry, thuspreventing air leakage into the cavity.

Located around the inner flange is a number ofpush out pockets for the location of restrainingstraps as required.

Manthorpe Joist Seals solve the problem of air leakage around the timber joist and effectively mount the joist in the wall, eliminating the need for clumsy joist hangers.

The joist seal fits over the end of the joist and is built into the block work forming an air tight seal with the masonry ensuring good insulation. During the drying out period the timber floor joist can shrink within the product without compromising the seal, thus complying with Part L of building regulations.

Traditionally, joists would be built directly into the block work skin of an external wall. However, robust construction details state that this is no longer acceptable, as shrinkage of joists and mortar allows air leakage to the cavity.

One alternative is to use joist hangers – but these are difficult to fit, slowing down the building process and leading to reports of structural problems such as springy floors and collapse.

Frequently Bought Together

Questions & Answers

There are currently no questions for this product.

Have a question about this product?

Product Reviews

Product Enquiry Form
Manthorpe G912 Joist Seal 100mm x 100mm - Translucent White

*Required Field

Would you like to empty your basket?

Yes No


It seems you are running an older version of Internet Explorer. Our site does not support these old browsers as they do not house the technology that allows our site to be safe and secure.

If you wish to access our site please either upgrade your browser or download an alternative.