Insulation of slab-on-ground floors
Understanding how to maximise the insulation of a slab-on-ground floor is an important step to designing an energy-efficient building. So, where is the main heat loss, and how is a slab best insulated?
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By Ian Cox-Smith – 1 December 2008, Build 109
Understanding how to maximise the insulation of a slab-on-ground floor is an important step to designing an energy-efficient building. So, where is the main heat loss, and how is a slab best insulated?
By Ian Cox-Smith – 1 December 2016, Build 157
Modelling of concrete floor slabs at BRANZ has provided insights into how to optimise the effectiveness of exterior perimeter edge insulation.
By Ian Cox-Smith – 1 February 2008, Build 104
Reflective foil insulation products are commonly labelled with a component R-value. This does not signify performance, and should not be confused with the R-values for bulk insulation products.
By Ian Cox-Smith – 1 October 2013, Build 138
The BRANZ helpline regularly gets asked whether to include garages in a building’s thermal envelope and which parts should be insulated. Each situation is different, but to help answer these questions, BRANZ has carried out some thermal modelling.
By Ian Cox-Smith – 1 December 2015, Build 151
Heating costs could be cut if we do as Americans and Europeans do and add perimeter edge insulation to heated concrete floor slabs.
By Ian Cox-Smith – 1 April 2016, Build 153
Ventilation is required to reduce moisture levels, but can too much subfloor ventilation reduce the effectiveness of underfloor insulation? BRANZ set out to find the answer.
By Trevor Pringle – 1 December 2016, Build 157
It can be tricky to construct thermally efficient concrete slabs as the footprint gets more complicated. Here are a few points to consider.
By Ann Galloway – 1 October 2016, Build 156
There’s a little breathing space, but soon, many rental properties will need to be retrofitted with underfloor insulation. Retrofitting foil insulation has been banned, so what are the options?
By Dr Dave Dowdell – 1 April 2017, Build 159, Feature article
Life cycle assessment is being applied to building materials as part of a major BRANZ study into the resilience of flooring and insulation materials to floods and exposure to water.
By Ian Cox-Smith – 1 June 2007, Build 100
BRANZ has been researching how to improve the insulation of concrete slab-on-ground floors and has found an alternative method which is practical and improves performance.