Case Studies
Residential Apartment
New build / Grade 1
There are a handful of builders who build a good quality unit above the minimum BASIX or NCC standard. Their clients tend to be owner occupiers rather than renters.
Problem
Provide a high level of performance without being too over the top.
Application/Solution
With projects like this, the attention to detail is noticeable, the sites are well organised and schedules dependable. Using PIR boards below and XPS above the balconies results in a maximisation of performance with minimum space. The building is airtight and well insulated, with little or no chance of condensation.
Wall insulated internally.
Note: NCC had previously allowed combustible insulation within the façade behind a non-combustible lining. The builder, designers, and sub-contractors need to receive sign-off from a qualified engineer or certifier to confirm fire and condensation issues are resolved.
The following cross section is a preferred solution, if there is approval from certifiers and designers.
GRADE 2
These projects are properties looking to meet most of the ideals for energy efficiency. Good examples would use a minimum of R2.5 extruded polystyrene above the slab, have a breather membrane fixed to the lightweight frame and R2 PIR fixed to the carpark soffit.
The documentation has normally been assessed to Australian Standards by an ILAC recognised laboratory.
Builders and sub-contractors will be notified by the construction manager and architect not to use foil as an insulation product.
Rectification grade
Normally, I would advise my clients and family to avoid buying units that have no insulation above the slab, or use bulk fibre below the slab. The walls often have no insulation and there will be a damp smell on southern rooms. In general, it feels colder inside these houses than the external temperatures. As a result, some of these builders are no longer operating.
Ghost Leaks
Ghost leaks or leaky building syndrome can be described as water
or moisture seen on walls or floors as condensation, when no rain had fallen. Mould can be toxic and often the only solution is demolition.
or moisture seen on walls or floors as condensation, when no rain had fallen. Mould can be toxic and often the only solution is demolition.
Fixing condensation issues
Don't go to court. Ask the builder to enter mediation and get it fixed the first time round. We understand condensation is caused by moisture from the inside trying to escape.
Start a project with us.
Our mission is to deliver value for owner and occupiers of buildings. Passive House provides a means of achieving great thermal comfort levels by using simple systems and attention to details during construction.
CONTACT
rav@desilvasolutions.com
Telephone
+61 2 9596 2957
0435 75 3547
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Design & Development: June 03rd