The Revolutionary Cavity Wall Spacer

SureCav is the BBA approved 100% recycled cavity spacer rainscreen system. It’s the easy answer to the new regs, it saves you space and provides a rainscreen protection against wind-driven rain. Eliminating the risk of water ingress whilst providing a guaranteed clear, moisture and mortar-free cavity. SureCav25    and SureCav50 are both approved for use in ALL exposure zones.

Buy online

What is SureCav?

Recycled, Rainscreen Cavity Spacer System

SureCav is the 100% recycled, BBA approved 25 and 50mm cavity spacer system. SureCav is the sustainable, cheaper, faster and space saving solution. Being the ONLY approved way to build a 25mm approved cavity, gives you the chance to achieve the new 0.18 regs and still KEEP your 100mm cavities. When used with brickwork you can keep a 100mm overall clear, dry, vented partial fill cavity. Gaining all the benefits of partial fill and saving valuable internal floor space!

When building with stonework, it is the upgraded solution to concrete backing blocks and shuttering boards. The SureCav cavity spacer rainscreen system sits in the cavity and allows a stone, slate, brick or flint outer skin to be built without the need of an additional block leaf. 

SureCav gives you a rainscreen protection against wind-driven rain whilst maintaining a guaranteed clear, dry, vented cavity. Eliminating issues from cavity bridging and water ingress. By installing SureCav you can have the peace of mind that you have a 100%, mortar and moisture-free, clear cavity.

SureCav is BBA approved for use in every exposure zone, with any masonry outer leaf and any construction type. The SureCav system is designed to last the lifetime of the building. 

Our Awards

SureCav are proud to have received recognition for their products over the years. Some highlights are Planet Mark, for our commitment to sustainability and The National Building and Construction Awards.

Awards
NBCA finalist 2022 icon Planet Mark icon

About us

SureCav’s story starts in 2000, when Charlie came up with the idea of a process to simplify the building of natural stone walls. Building with natural stone required a backing wall of heavy concrete blocks or the removal of temporary shuttering. This often damages the newly-constructed stonework, resulting in mortar contaminating the cavity, as well as water penetration.
SureCav is a polypropylene panel that sits in the cavity and allows a stone, slate, brick or flint outer skin to be built without the need of an additional block leaf. It is designed to form a lightweight alternative to backing blocks that also acts as a barrier to wind-driven rain, effectively providing a consistent, mortar and moisture-free, clear cavity.

SureCav is made from 100% recycled polypropylene, designed to last the lifetime of the building and is BBA certified. SureCav is the only approved method for constructing an NHBC accepted a 25mm residual cavity.
Surecav stonework, SureCav 25. The Keeping a clear, dry, vented cavity free from any moisture. Eliminating water ingress issues and damp in homes . Used with stone and Brick masonry finish with SureCav25 bba approved cavity spacer rainscreen system keeping clear, dry, vented moisture and mortar-free cavities guarenteed whilst protecting against wind-driven rain and avoiding water ingress issues easily

SureCav
Product Range

SureCav 50 cavity spacer rainscreen system
SureCav 50

The 50mm cavity spacer system. Creates a guaranteed clear, dry, moisture and mortar free BBA approved 50mm residual cavity
Panel size: 1200mm x 450mm x 50mm

£150.00 ex VAT

SureCav 25. The Keeping a clear, dry, vented cavity free from any moisture. Eliminating water ingress issues and damp in homes . Used with stone and Brick masonry finish with SureCav25 bba approved cavity spacer rainscreen system keeping clear, dry, vented moisture and mortar-free cavities guarenteed whilst protecting against wind-driven rain and avoiding water ingress issues easily
SureCav 25

The 25mm cavity spacer system. Creates a guaranteed clear, dry, moisture and mortar free BBA approved, 25mm residual cavity 
Panel size: 1200mm x 450mm x 25mm

£150.00 ex VAT

Surecav washers
Washers

Washers are used when installing SureCav on timber/SIP frame buildings to create a watertight seal. 5 per panel recommended
Size: 6mm diameter hole x 10mm deep

£11.00 ex VAT

Surecav type W vent
Type-W Vent

Achieves 1500mm2 per linear meter
BBA ventilation requirement, when installed every 0.5m high and low with these vents
Size: 105/115mm x 65 x 10mm

£24.00 ex VAT

Surecav type W vent-extender
Type-W Vent Extender Duct

The extension ducts are used with
the Type W vents. The Extenders are required with an outer leaf over 100mm deep.
Size: 200/225 x 65 x 10mm

£49.00 ex VAT

Certifications

View all certifications
bba logo

BBA Approved

BBA Certification is a trusted mark of quality in construction, awarded after rigorous testing by the British Board of Agrément. It ensures products meet all relevant standards and are fit for purpose.

LABC Approved

Local authority building control teams help people comply with the latest building regulations by giving feedback on plans and providing site inspections.

NBS Source

Used by architects, specifiers, and construction professionals, providing easy access to high-quality building product data. Offering detailed product information, technical specifications, and compliance documentation, all in one place

Testimonials

We are thrilled to share the feedback we have received for our SureCav solution, and how it has improved a wide range of projects across the UK and Internationally also. Explore the testimonials below to see how industry professionals, builders, architects, site managers and even the self-builders have benefitted from SureCav. Scroll through to discover what they have had to say about the product, benefits, service and more.
Clear, dry, vented cavity creating using the SureCav 100% recycled plastic cavity spacer system
SureCav is a fantastic product and as we said in the CPD it has very much become a standard detail for stonework within the office. Perhaps now with knowledge of the further advantages of waterproofing and stability it may become more widely specified for other cavity wall types also. Many thanks for all your help and we hope that our support of your product will continue to push SureCav as a recognised standard for cavity wall construction within the industry.
Louisa Meek, CSA architects
Masonry construction, against the SureCav BBA approved, cavity spacer, rainscreen system used with a partial fill insulation cavity.
I have specified Surecav on building regulations applications after the product had been recommended to me by the Local Authority Building Inspector and was interested to try it on my own extension. I found the product to be perfect for creating a random limestone facade which abuts the traditional rubble filled construction seamlessly yet overcomes the inherent problems of water ingress through the limestone fissures. Additionally, the reduction in depth of wall gives space for appropriate levels of insulation whilst achieving maximum internal space. I will continue to specify the product as the benefits far outweigh the costs and it is a breeze to install.
Jonathan Athay, JMA Design, North Yorkshire
Builder laying bricks
One of the best products in the construction industry!
Dan, Greenhill Construction SW Ltd
Masonry construction, against the SureCav BBA approved, cavity spacer, rainscreen system used with a partial fill insulation cavity.
My opinion is that SureCav is the way forward and is a great product and great solution. I can see this completely doing away with outdated backing block design. I have been personally really impressed with the overall SureCav system and have happily shown some of your prospective customers around. I talked to your prospective customers about the many benefits of SureCav, including it being simple and easy to erect and also, with the advantage on a tight site it taking up less valuable storage space and can be moved and handled with ease. The biggest advantage, of course, is that you can increase the overall floor area by using SureCav.
Daniel Cox, Site Agent
Masonry construction, against the SureCav BBA approved, cavity spacer, rainscreen system used with a partial fill insulation cavity.
Love this product, my local building control officer recommended it for my stone built project. The product was easy to install and made the building of the stone walls quick and easy. I’m now using it on all projects. Nice to see a product that does what it says!
Glen Davison
Stone wall under construction with SureCav installed
If you haven’t used SureCav yet, look this product up – it’s the future!
JR Masonry
Large house with red roof tiles
We have just built a new build using SureCav25 and found it superb to use, allowing us to increase insulation thicknesses within the build, enabling us to achieved a great EPC (energy performance) result. We also found it very easy to use as it guaranteed a clear cavity throughout the build and it also saved us using a backing block for the stone façade, actually increasing the internal rooms sizes by at least 200mm. Overall, we found the SureCav a fantastic system – thanks SureCav!
Tony Iles, Director, Tonic Construction Limited
House under construction with scaffolding around it
I really can’t recommend the SureCav product enough! Our self build project has been stressful to say the least with the rising costs of labour and materials, we’ve had to do whatever we can to save where we can. I thought a good way to do this would be installing the SureCav myself, however with never using the product before I was unsure of how straight forward this would be. I am happy to say it was an absolute breeze! The stonefacing looks great against it and the stone lads said it gave them a great flat structure to work against. This really is a 10/10 A*** product that we couldn’t be happier with and recommend enough.
Andy Holcroft, self-builder in Cumbria
laying stonework easily against the SureCav system, SureCav 25. The Keeping a clear, dry, vented cavity free from any moisture. Eliminating water ingress issues and damp in homes . Used with stone and Brick masonry finish with SureCav25 bba approved cavity spacer rainscreen system keeping clear, dry, vented moisture and mortar-free cavities guarenteed whilst protecting against wind-driven rain and avoiding water ingress issues easily
Having used SureCav on at least 6 contracts we will never use backing blocks or shutter boards again.
Richard, EMM-LEC Ltd
Stone built home, under construction using the SureCav cavity spacer, rainscreen BBA approved system
The speed of build, easy storage and handling make SureCav an ideal system. We have found this especially to be the case where storage and working space on site is at a premium.
Ray Holmes, Hopkins Developments
Masonry construction complete using SureCav25, against the SureCav BBA approved, cavity spacer, rainscreen system used with a partial fill insulation cavity.
I am so impressed with this product I would be happy for you to bring any of your prospective customers to my site at Wool, Dorset, and I will be pleased to show them your system.
Chris Allworthy, Barratt Homes Site Agent
standing infront of SureCav, 100% recycled cavity spacer rainscreen system, behind is insulation and traditional build in a partial fill cavity. The SureCav25 and 50 are both BBA approved for use in any exposure zone, offering protection against wind-driven rain and moisture issues.
We have used SureCav on a new stone house which was shortlisted for an RIBA Award. SureCav is a very good way, without the need for all of the additional foundations, and loss of floor space in the building associated with a blockwork backing to the external masonry. This saves time, space and money plus it gives the additional layer of weather protection provided by the SureCav sheets. We are currently using SureCav. We are very pleased with the high quality stonework. SureCav makes it easier to achieve the effect we want.
Phil Easton, Founding Director at Western Design Architects
Brick traditional Masonry construction, against the SureCav BBA approved, cavity spacer, rainscreen system used with a partial fill insulation cavity.
SureCav is a fantastic product and would use it on all jobs.
Ross Parkyn, Director, Duchy Brickworks
Block wall under construction with SureCav in cavity
We have supplied the SureCav system for several years to bricklayers across the Southwest. Not only do we find the team at SureCav highly knowledgeable and helpful, but the SureCav system gets great reviews from all our customers who install it. Customers who use SureCav will continue to use it on future projects as it is a quick, easy and professional system to instal. The service is second to none and I really can’t find a fault. Suitable for both timber frame and masonry, it really is a fantastic system.
Eric Sutherland, Branch manager

Talk to an expert about using SureCav for your next project

Call us now on 01963 34660 8am – 5pm (Mon-Fri), or fill in the contact form, to find out how SureCav benefits your build or ask us a question!

  • Join the SureCav Revolution
  • Become a SureCav Stockist
  • Fully Accredited by BBA
Contact Us Now
Find out how SureCav benefits your project, or ask us a question below..

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.