This research investigates the practicalities and effectiveness of adding exterior perimeter edge insulation to concrete floor slabs in residential construction in New Zealand. In particular, it attempts to demonstrate the benefits of perimeter insulation when used on new, reinforced floor slabs on compacted ground, as is currently the case with many new builds in Christchurch.

The work models the performance of perimeter insulation in various sizes, materials and configurations when used in combination with three common floor slab and wall construction techniques. It also investigates the performance of perimeter insulation when used with additional under-slab insulation.

As well as computer modelling, the performance of perimeter insulation was verified with experimental data and the results from a long-term study of an occupied residence in Christchurch.