Flint Construction

Flint masonry finish - perfect with SureCav.
 

Flint’s durability is one of the reasons it has been used as a type of building material since antiquity. It is also portable, available and inexpensive.

No longer requiring a backing block, the flint is built directly against the flat face of the SureCav panel. Flint can be prepared in various ways, such as snapped, knapped or squared, producing a variety of decorative effects that can be incorporated as a feature effect in walls.

The SureCav cavity-spacer panels come in 2 depths, 25mm and 50mm. SureCav25 provides the solution to successfully reducing the wall width, or allowing for more insulation in the cavity, helping to bring down U-Values. SureCav25 is suitable for construction throughout the UK and Ireland with a current BBA certificate that approves a protected 25mm residual cavity.

General installation instructions

For traditional internal blockwork: Build in the wall ties as usual, every 450mm vertically. The SureCav panels will slot between the ties, and can be held in place with the wall tie clips. If additional support for the flint is needed, extra ties can be fixed by drilling and plugging through the pods using the SureCav seal washers. Alternatively, a helical tie can be fixed through any flat face of the SureCav panel (not through the pods).

For timber-frame: Fix the structural ties along the top of each row of SureCav at the specified stud centres. Cut the long joining strip up to the tie and continue the other side with the off-cut. If additional non-structural ties are needed for support, us helical ties, as above, or screw frame ties into the sheathing through the pods, using the SureCav seal washer.

It can create extra internal space

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 1.6% increased floor space over two
storeys. See more examples of space-saving benefits here.

Additional advantages

• No backing block means more room for insulation, helping to lower U values. Meet the new 2022 building regulations for walls by using SureCav25, which allows more insulation in a designed 100mm overall cavity For example, with SureCav25 and 75mm rigid board insulation, you can achieve U-Values as low as 0.18W/m2K
• Ensures completely clean cavities. The residual cavities formed  by the SureCav panel will prevent any mortar from contaminating the wall ties
• SureCav is designed to prevent saturated masonry, caused by wind driven rain, from traversing the cavity. The 'wall of plastic' formed by the sheets provides a barrier that will protect the fabric of the building. Combined with cavity ventilation, the cavity will remain free from moisture
• It is BBA certified
• For all architects and designers, SureCav is listed with NBS here