Building Wraps & Rigid Air Barrier
Creating a warmer drier home with the correct building wraps, that is energy efficient and healthier for your family
Here is the solution!
The range of internal and external wall membranes offers homeowners the opportunity to create homes that are warm, dry and healthy, while also being energy efficient and environmentally friendly.
In New Zealand we don’t have the same temperature extremes as many other countries but homes are often chilly and damp, and fall below World Health Organisation standards. Damp, mouldy, draughty houses have been linked to respiratory illnesses especially asthma with an estimated one in four children having symptoms, the second highest rate in the world after the UK (ref: The Asthma Foundation of NZ).
Moisture is created from internal condensation, dampness getting into the house from the outside or during a new building process when moisture can be trapped in the building envelope. It is also surprising how many litres accumulate from numerous household activities such as cooking, clothes washing and drying, showers and baths, and using gas heaters.
The Airtightness vapour check membranes and Weathertightness wall wraps provide the ultimate solution. They protect the insulated wall cavity from uncontrolled air movement and moisture which enables the insulation to work better. Moisture is also transported out of the wall but not back in eliminating the problem of structural damage within the building envelope. Surprisingly the issues with uncontrolled air movement and moisture not only apply to older homes, but new building code compliant houses also. Although we are greatly aware of leaky building issues how many of us, when building a new home,question standards and what is available to vastly improve comfort, health and also to protect our most important investment?
The system in your home means that less energy is used providing direct savings with your power bill. With effective clean air ventilation added to the mix, you will enjoy comfortable, healthy living throughout all seasons, all year round.
We believe every New Zealand family also deserves the best in their lives and homes!
Definition of a Rigid Air Barrier:
- Impermeable to airflow – the system must be continuous (no holes, openings or penetrations) and resistant to pressure differentials
- Continuous over the entire building enclosure
- The panels are able to withstand the forces that may act on them during and after construction
- Durable over the expected lifetime of the building
Understanding of a Rigid Air Barrier:
Wall cavities require the presence of an air-impermeable barrier to enclose a building cavity. A rigid air barrier is a solid substrate that blocks air flow and prevents air pressure and water infiltration from the outside to the interior of the building. It acts as a secondary line of defence against water penetrating into the wall system – the primary defence being the wall cladding.
In New Zealand, a rigid air barrier system is now mandatory for buildings in extra high wind zones. Rigid air barrier systems also provide a more robust cavity and offer structural bracing when used in the construction of buildings in earthquake zones.