URSA Façade is mechanically fixed to the wall structure between the brackets used to support the cladding system. The usual procedure for construction is;
1. Timber and metal stud framed walls should include a suitable air and vapour control layer on the inner surface behind the plasterboard. Timber frame walls should also include a breather membrane external to the sheathing.
2. The cladding system brackets are fixed to the main structural wall in accordance with the manufacturer’s instructions.
3. Fix the URSA Facade slabs to the wall in a staggered pattern. Ensure all joints are tightly butted together and that the slabs are cut accurately and tightly around the brackets ensuring that there are no gaps. Leaving the slabs cut slightly oversize ensures that the fibres will ‘knit’ together. The slabs cut easily with the use of a sharp knife.
4. The URSA Façade slabs are mechanically fixed to the wall using suitable insulation retaining fixings (with a minimum head diameter of 70mm) depending upon the substrate. A typical fixing pattern is shown below – the central fixing in each slab must be metal rather than plastic. Alternatively use a plastic fixing at the corner of each slab with a with a metal fixing at the cebntre. Do not overdrive the fixings.
5. Ensure that cavity barriers are installed in accordance with the Building Regulations. In high rise this would include at every compartment floor level and at the top of the cavity. Ensure external openings are correctly sealed also.
6. Fit only sufficient URSA Façade slabs that can be covered and protected on the same working day otherwise provide temporary protection. Provide temporary protection during bad weather including rain, wind and snow or freezing conditions
7. Once the insulation is fitted the external cladding work may proceed in accordance with the manufacturer’s instructions.