The original SureCav50 was designed to form a lightweight alternative to backing blocks that would increase floor space and act as a barrier to wind driven rain, effectively providing a consistent mortar and moisture-free 50mm clear cavity. Now, SureCav25 forms a 25mm clear cavity, making extra room for insulation or for creating even more floor space.
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SureCav25 forms a 25mm clear cavity providing a backing board for the stone, slate, brick and flint outer leaf. It halves the cost of building with a backing block and halves the CO2 footprint, compared to using a concrete block backing wall and is fully BBA certified.
A reduction in wall thickness of 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. 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.
Consider this: An overall 7.5% gain is equivalent to the floor space of 6 extra houses on an 80 house site!
SureCav is made from 100% recycled plastic and almost halves the carbon footprint when compared to the weight of the concrete blocks it replaces.
More about eco-friendly SureCav helping the environment here
40 tonnes of 100mm concrete blocks
The equivalent wall area of SureCav panels, that would require 40 tonnes of 100mm concrete blocks, will easily fit into a pick-up truck, saving valuable site storage space.
Now drive down U-Values! SureCav25 allows for more room in the cavity for insulation, thus enhancing the thermal performance of the wall. Where heat conservation is the prime concern, SureCav25 will release an additional 25mm in the cavity that can be used for extra insulation.
This example shows how a 100mm overall cavity width, comprising 75mm board insulation and a 25mm clear cavity using SureCav25, can achieve U-Values as low as 0.18 W/m²K. Alternatively, a 125mm overall cavity width, comprising 100mm board insulation and a 25mm clear cavity using SureCav25, can achieve U-Values as low as 0.15 W/m²K. (Figures calculated using Kingspan Kooltherm K108 Cavity Board insulation and the Kingspan U-Value calculator)
Now guarantee clean and moisture free cavities with SureCav25! The SureCav25 cavity backing system is used to form a consistent 25mm clear cavity in new masonry or timber frame walls of domestic and non domestic buildings.
The 25mm air gap between the outer layer of masonry and the insulation, coupled with the moisture beating design of the SureCav25 panels, will prevent any water penetration. The SureCav25 panels will also hold the insulation in place, adding to its effectiveness in preventing heat loss.
In very severe exposure zones there is sometimes a requirement for a clear cavity up to 75mm, however, you can use SureCav25 and save up to 50mm space! As well as the SureCav panels preventing moisture from bridging the cavity, the unique shape of the SureCav pods directs any moisture to the outside leaf, protecting the fabric of the building.