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SureCav 25 Pack of Ten


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£149.13 Ex. VAT

In stock

IMPORTANT: Please contact us for a quote on Surcav, We can organise direct shipping at great prices. Please do not order for delivery direct from website this is for collection only.

Please check that you have ordered the correct depth of SureCav!


(Joining strips are included in the price.)

Panel size: 1200 x 450 x 25. SureCav25 is a 25mm deep version of the popular SureCav50 Cavity Spacer Backing Board. It is a moulded, 100% recycled, polypropylene panel with spacer protrusions, forming a 25mm clear cavity and providing the perfect backing board for the stone, slate, brick and flint outer leaf. SureCav25 is BBA certificated. This cavity protection system ensures clean and moisture free cavities with either timber frame or traditional construction.

SureCav25 is certified by the BBA and an accepted construction system by LABC and Premier Guarantee.



SureCav is an 100% recycled plastic cavity spacer system, replacing the need for concrete backing blocks and helps to construct more sustainable homes. SureCav allows you to achieve a higher quality build, whilst saving money, time and space, as well as lowering your carbon footprint by 6x!

SureCav25 is the only way, anywhere, to form an approved 25mm residual cavity, BBA Approved!

Advantages of SureCav 25

Below, we list the advantages of SureCav25. They are the same as for Surecav50 but with the added benefit of an extra 25mm of space!

SureCav video

Learn more about SureCav

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Downloads, Drawings and Manuals


SureCav25 and SureCav50 – easy to source on NBS

SureCav is available on both NBS Source and NBS Chorus – the most popular and comprehensive products for specifiers in the construction industry. Go to NBS Source here

For architects, designers and builders, both SureCav50 and SureCav25 are as easy to source as they are to work with.

A certified choice

You can specify SureCav with confidence. Approved by the British Board of Agrément (BBA certification No. 04/4154).

It’s the only BBA-certified alternative to concrete backing blocks or shuttering that guarantees a moisture and mortar free cavity and allows a minimum 25mm residual cavity.

SureCav is unique

A new and lightweight alternative to heavy and expensive concrete backing blocks. SureCav increases floor space and acts as a rainscreen to the harshest weather. BBA certified and readily available to specifiers, SureCav is the ultimate space and cost saving solution for cavity wall construction.


• Is BBA certified

• Lowers U-values by making more room for extra insulation

• Increases internal room space

• Maintains an essential air gap

• Offers a space-saving 25mm permitted residual cavity

• Protecs from wind-driven rain, which keeps moisture out of the cavity

• Available on NBS Source & NBS Chorus

• Suitable for use with brick, stone, flint or slate external finishesSureCav25 with Ashler stone

Huge cost savings

Concrete is deceptively expensive. SureCav can significantly lower your building costs. It forms a 25mm or 50mm moisture-free clear cavity, providing a backing board for the stone, slate, brick and flint outer leaf.

This halves the cost of building with a backing block. It’s also environmentally sound, producing a sixth of the CO2 footprint compared to using a concrete block backing wall.

Gain even more space with SureCav25!

The gains in space are equally huge. A reduction in wall thickness of just 25mm will increase the internal dimensions of the property by 50mm in each direction and result in an average of 1.25% increased floor space over 2 floors.

Removing the 100mm backing block adds another 5% internal space. This can rise to over 7% additional floor space in very severe weather zones, where a 75mm clear cavity may be required.

This results in an overall gain of 7.5%. That's equivalent to the floor space of 3 extra houses on an 80 house site!

SKU: F367660 Category:

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