Cavity Trays, Closers & Barriers

Cavity Trays provide protection from water ingress below roof abutments with Cavity Closers acting as a thermal break for window and door reveals.  Cavity Barriers are essential to restrict the spread of smoke and flames within the fabric of the building.

Cavity Closers

Heat loss and condensation through un-insulated door and window reveals can ruin an otherwise warm and comfortable home. Cavity Closers not only provide a thermal break at the reveal of both door and window openings, they also act as an effective vertical damp proof course (DPC), ensuring compliance with building regulations.

The Manthorpe range of Cavity Closers offers an economical solution to closing the cavity at window and door reveals without the need to return the block work while also solving cold bridging problems. Our Rigid Frame Formers can also be used as a dummy window former, these made to measure products can do away with the hassle and wastage of constructing temporary wooden surrounds.

Cavity Trays

Wind driven rain can often force its way through brickwork into wall cavities. If this damp trickles down the cavity and behind an extension, the homeowner faces a major problem, the outside wall then becomes an inside wall where rain-soaked bricks can cause problems in internal rooms – a problem solved by Manthorpe Cavity Trays.

The tray sits within the cavity and redirects water back thorough the external brickwork, allowing it to flow harmlessly away along an abutting roof.

Free Take-Off Service

Manthorpe also offers a free take-off service. For no extra charge our in-house specialists will advise the builder of the right type and quantity of trays for their project.

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Vertical and horizontal REDSHIELD Cavity Barriers installed around a window opening

Cavity barriers – award-winning products

Manthorpe’s REDSHIELD® cavity barriers do away with the traditional need for multiple elements to be brought together to form a single cavity...

Rigid Frame Formers

Rigid Frame Formers

The Manthorpe rigid frame formers are a faster, more efficient, more cost effective alternative to made-on-site timber equivalents. The units...

Manthorpe preformed horizontal tray installed within wall cavity

Cavity trays for moisture drainage

A cavity tray provides a barrier within a cavity wall, to prevent the ingress of moisture into the inside of the building, resulting in damp...

Vertical and horizontal thermal cavity closers installed around a window opening

Cavity closers to control moisture build-up

Thermal cavity closers prevent heat loss at key potential weak points in the cavity construct, at door and window reveals – heat loss that is...

TDI Cavity Closers

The TDI range of thermal and fire rated cavity closers are available for various details and help to reduce heat loss and condensation build up...


From our first foray into the building industry through to our latest product innovations, Manthorpe Building Products has grown year on year thanks to a philosophy of continuous investment and development. 

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At Manthorpe we pride ourselves on our high quality standards, not just for the products that we produce; but for our design, manufacture, sales and delivery processes as well.

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Innovation has always been at the core of the company.  From new technology investment to in-house research and development, Manthorpe is constantly looking ahead to meet the needs of the industry.

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