When it comes to airtightness, many Australian builders rely on reflective wall wrap. It meets the basic code requirements, but it often falls short on the airtightness and moisture control a home needs for real energy efficiency and long-term durability.
Airtightness matters because air leaks waste the heating and cooling you pay for. In a Queensland climate, leaks also let hot, humid air into the walls, which drives up cooling costs and can cause condensation inside air-conditioned walls. Wall wrap alone is the minimum to satisfy the regulations, not necessarily what makes a comfortable home.
This isn't sponsored content. We like the pro clima system, a taped membrane system, so here's how it compares with standard reflective wrap, and when it's worth the extra cost.
C10 - Rough In Stage Inspection Checklist
$59.00 AUD
Last updated 28 Oct 2026 · Revision 3 · Free updates for life
Checklist Type: Minor
Form Factor: Fillable, print-ready PDF (A4, 27 pages)
When to use: Rough-in stage: after services are installed, before cladding and linings go on
An 84-point rough-in checklist. Check plumbing, electrical, gas, solar, air conditioning and data after every trade has finished, before the insulation and linings hide them.
The Building Envelope Is More Than Wall Wrap
The building envelope (the walls, roof and floor that separate inside from outside) is more complex than wrapping the frame. It has multiple layers, each with a job: keeping rain out, stopping air leaks, managing moisture and controlling heat.
In our article on "Why Rainscreens are essential for new homes" we explain how all these layers have to work together.
Anthony Painter
Reflective wall wrap is useful, but on its own it often fails to stop moisture getting in, manage condensation or provide continuous airtightness, especially when poorly installed.
That's where a system like pro clima helps: it combines airtightness, moisture control and durability in a way basic wall wrap can't.
A rainscreen adds an extra layer of defence by letting water that gets behind the cladding drain away before it reaches the wall. An airtight system like pro clima stops air leaking through gaps and cracks, cutting heat loss and improving comfort.
The common problem with wall wrap on site is installation: it's stapled on with unsealed laps and torn or left untaped around windows and pipes, which leaves gaps for air and water.
Combined with a rainscreen, a membrane system like pro clima covers all four control layers of the envelope: air, moisture, heat and vapour. Read more in our article "Optimising the 4 Control Layers for High Performance Homes":
Anthony Painter
Anthony Painter
The Limitations of Reflective Wall Wrap
Many project builders use reflective wall wrap because it's quick to install and meets minimum compliance. It reflects radiant heat and offers some vapour control.
But the way it's often installed (see our article on "The Right Way to Install Wall Wrap According to Australian Standards" below) raises several concerns:
Anthony Painter
- Inconsistent Airtightness: Overlapping sheets stapled to the frame don't create a continuous airtight seal. Gaps and tears form around penetrations such as windows, doors and services, and air leaks through the thermal envelope.
- Moisture Management Depends on the Product: Many reflective wraps sold now are vapour permeable, but some are not, and a vapour-resistant wrap in the wrong place can trap moisture in the wall cavity and cause mould. Since NCC 2022, wall wraps must meet condensation management requirements, including minimum vapour permeance in some climate zones. Ask your builder for the wrap's vapour permeance class and check it suits your climate zone.
- Limited Performance Testing: Reflective wraps meet the relevant Australian Standards, but they're rarely tested as part of a complete airtight system the way higher-end membrane systems are. A compliant product doesn't guarantee long-term performance, particularly in humid climates or where temperatures swing widely.
Why Pro Clima Outperforms Reflective Wall Wrap
Where pro clima pulls ahead of standard reflective wrap:
- Complete Airtightness Solution: Instead of overlapping and stapling, pro clima uses tapes, membranes and adhesives to create a continuous airtight barrier. Tapes like TESCON EXTORA® and TESCON VANA® seal joints and penetrations around windows, doors and other openings.
- Better Moisture Management: Interior membranes like INTELLO® PLUS change their vapour resistance with humidity, helping prevent condensation in the wall cavity. The SOLITEX EXTASANA® wall wrap lets vapour escape while keeping external water out, reducing the risk of mould.
- Tested for Demanding Conditions: pro clima products are widely used in Europe, where airtightness standards are among the highest in the world, and are tested for UV resistance and durability.
- Longevity and Durability: pro clima publishes long-term ageing tests for its tape adhesion. Ask for the current warranty terms in writing for the products used on your job. Poorly installed wraps, by contrast, can tear and degrade, leading to air leaks and lost thermal performance.
Installation Comparison: Pro Clima vs. Reflective Wall Wrap
pro clima needs precise installation and attention to detail. Wall wrap is usually installed faster and with less care, and critical steps like taping around penetrations often get skipped.
Why do builders choose the fastest method? Our article on the "Holy Trinity of Construction" (time, cost and quality) explains the trade-offs.
Anthony Painter
- Reflective Wall Wrap Installation: Typically involves rolling out the wrap, stapling it to the frame, and overlapping the seams. While reflective wall wrap can provide some level of protection, gaps and improper sealing around edges and penetrations are common issues that lead to reduced effectiveness.
- Pro Clima Installation: Every joint, seam, and penetration is carefully sealed with airtight tapes, ensuring no leaks. Pro Clima also offers spray-on airtightness solutions, such as AEROSANA® VISCONN, which are ideal for sealing hard-to-reach areas and complex building junctions. This attention to detail ensures maximum airtightness and moisture protection.
- What to ask for: whichever system you use, ask your builder how laps, tears and penetrations will be sealed, and check it at your frame and pre-plaster inspections.
The Catch: Cost, Skills and Ventilation
pro clima isn't free. The membranes and tapes cost more than standard wrap, and the labour takes longer because every joint and penetration has to be sealed. It also needs installers who know the system; a badly taped membrane is no better than badly stapled wrap. And an airtight home needs planned ventilation (exhaust fans ducted outside, openable windows, or mechanical ventilation) so moisture and stale air have somewhere to go.
Bottom line: reflective wrap meets the minimum. If you want a genuinely airtight, durable envelope, a taped membrane system like pro clima is worth pricing, as long as it's installed properly and the house is designed to ventilate.
FAQS
Can Pro Clima be used in retrofitting projects?
Yes, the Pro Clima System is suitable for both new builds and retrofitting projects. Its range of products, including airtight tapes and spray-on airtightness solutions, can be applied to existing homes to improve airtightness and energy efficiency without the need for extensive renovations.
How does pro clima perform in different climates?
The products are designed for a range of climates, from humid coastal areas to hot, dry regions. In humid Queensland climates the key is choosing membranes and wraps with the right vapour permeance for your climate zone, so walls can dry out.
What is Air Changes Per Hour (ACH), and why is it important?
ACH measures how many times the air inside a building is replaced in an hour, usually tested at a set pressure (a blower door test). A lower number means a more airtight home, which holds its temperature better and uses less energy.
Is pro clima cost-effective?
It costs more upfront than standard reflective wrap, in both materials and labour. The payback comes through lower energy bills, fewer moisture problems and a more durable building, so get it priced as a separate item and weigh it up.
