Built Up Insulation System
Many specifiers recommend a built up insulated roof and wall cladding system for complete thermal efficiency.
The cavity in the built up insulation system is created with either:
- The Ashgrid Safe-Loc bar system in the first diagram or
- The mini zed purlin as shown in the second diagram.
Because of increases in the insulation thickness needed to achieve the current ‘U’ values for buildings, the Ashgrid Safe-Loc bar system is more able to deal with the increased cavity size.
Two examples of U value/ insulation thickness are shown below. Other variations are available please contact our sales office for details.
- Roofs 0.25 W/m2k – 180mm Insulation
- Walls 0.35 W/m2k – 120mm Insulation
In cases of high humidity a vapour barrier and breather membrane may be required. These are not shown in this example to allow clarity.
For many years a shallow profile NWSSL20, in a .4 gauge has been used as the liner in the built up insulation system.
We are now able to offer a .7 gauge liner panel NWSSL32 in a deeper profile to match the same profile as the outer sheet. This has proved to be popular with experienced contractors.
The first picture below, shows a built up system using a metal liner sheet. The second picture shows a roof over system onto existing fibre cement sheets. Once again they do not show any vapour barrier or breather membrane to allow clarity.