The experts at Dahlsens can recommend and supply a huge range of high quality thermal and acoustic insulation products at competitive prices. Improve the energy efficiency and comfort of your new build or renovation project with Dahlsens insulation supplies.
Our suppliers
Dahlsens partners with Australia’s leading insulation suppliers such as Reflex, Pro Clima® and Ametalin.
Pro Clima is a global leader in high‑performance building envelope systems, specialising in airtightness, weathertightness and moisture control solutions that support healthier, more durable and energy‑efficient buildings. Originating in Germany and now widely adopted in Australia, Pro Clima products are designed to work as integrated systems that help builders meet modern performance requirements, including NCC 2022 energy efficiency and condensation management standards.
Through Dahlsens, builders can access a range of Pro Clima products tailored for Australian construction conditions.
Roof sarking
Acting as a protective second skin under your roof, roof sarking provides benefits such as:
- Protecting against mould and ceiling damage caused by roof leaks
- Limiting the amount of dust that can enter a home
Roof sarking is available in a range of insulation types with additional capabilities such as improving a homes thermal performance or providing a secondary form of ember protection for BAL regions ranging from 12.5 to 40.
Roof sarking regulations
According to the Building Code of Australia (BCA), it is mandatory to sark all tiled, residential roofs with a rafter length over 6 metres. This regulation applies regardless of roof pitch. The BCA has other requirements relating to how a building is protected from external moisture, so it is considered best practice in the building industry to sark all tiled and metal roofs during the initial build.
Ask Dahlsens about our competitive pricing for roof sarking installation services. Roof sarking is installed under tiles and helps to minimise water damage caused from weather events such as wind-driven rain.
Trade Select Sarking HVB
Trade Select™ Sarking HVB is designed for use where water barrier and Class 1 Vapour Barrier properties are required for use as a roof sarking and wall wrap in residential and commercial buildings in BCA climate zone 1 and regions north of the Tropic of Capricorn in Climate Zone 2.
- Extra Heavy Duty
- Class 1 Vapour Barrier
- Air and Water Barrier
- Superior strength, puncture resistant
- Low Flammability, suitable for all BALs in bushfire-prone areas
- Can also be used for tile and metal roofs
VapourFlex® Vapour Permeable Membrane (VPM)
Looking for a wall wrap that ticks all the boxes for moisture control, durability, and code compliance? VapourFlex® vapour permeable membrane (VPM) by Reflex Insulation delivers.
Why builders trust VapourFlex® VPM:
- Vapour out, sealed: Class 4 vapour permeable with a built-in water barrier to reduce condensation risk.
- Strong and flexible: Lightweight, durable, and tear-resistant: easy to handle on-site.
- Built to last: UV resistant for up to 90 days and low flammability (≤5) for bushfire compliance across all BAL zones.
- Versatile: Ideal for all cladding types: brick veneer, weatherboard, timber, and fibre cement. Use on residential and commercial sites.
- Compliant where it counts: Meets NCC 2022 condensation management, sarking-type exemptions, and bushfire regulations.
- Custom branding available: Use your builds as billboards for your brand
Where to use it:
- External wall and gable applications
- Behind all cladding types
- In climate zones 2-8
- When you need to start internals before cladding goes up
Handy roll sizes:
- 2740mm x 30m (82.2m²)
- 1500mm x 30m (45m²)
- 1370mm x 30m (41.1m²)
FAQs
What is builders wrap used for?
Builders wrap, also known as house wrap, is a protective material used in building construction to create a weather-resistant barrier around the exterior of a building. Its primary purposes include:
- Moisture Barrier
- Air Barrier
- Breathability
- Insulation Support
Is building wrap necessary?
Yes, building wrap is generally considered necessary for most construction projects, especially in areas prone to varying weather conditions. While not strictly mandatory in every situation, it offers multiple benefits that enhance a building’s durability, energy efficiency, and protection.
What is roof sarking?
Roof sarking is a pliable, laminated membrane installed beneath roof coverings, such as tiles or metal sheets, to provide additional protection and enhance the building’s thermal performance.
Wraps, membranes and sarking warranties
Here at Dahlsens, we only partner with suppliers who provide high quality products and exceptional after sales support. In the unlikely event that there is an issue with your product, we are your single point of contact for all warranty enquiries. Simply contact us with your concern and Dahlsens will coordinate a resolution with the supplier on your behalf.