What sits behind your cladding matters just as much as the cladding itself.
Inadequate or incorrectly installed sarking can trap moisture, promote mould growth, or compromise thermal performance.
Too often we find sarking that’s ripped, missing, or installed with the wrong overlaps — exposing buildings to long-term water damage and non-compliance.
At Atomic Projects, we treat sarking and vapour barriers as part of the core facade system. Our installation is meticulous, tested, and NCC-compliant — giving your building a protected, breathable skin behind the cladding.
1. When Sarking Is Required
We install sarking and moisture barriers for:
- New cladding installations (fire-rated or standard)
- Replacement of combustible cladding
- Substrate repairs where the old membrane is compromised
- Projects needing condensation control and thermal regulation
- Weatherproofing upgrades in line with AS4200.1
Building types covered:
- Residential apartment buildings
- Public and government buildings
- Schools, healthcare and aged care
- Mixed-use and commercial assets
2. Products & Systems We Use
We work with high-performance vapour-permeable barriers from top-tier manufacturers.
Typical products:
- Bradford Enviroseal ProctorWrap
- Sisalation Vapawrap
- Kingspan Air-Cell Permishield
- Polywoven Class 4 sarking
- Fire-retardant sarking for high-risk zones
All installed with:
- Branded tapes and adhesives
- Correct lap spacing per AS4200.1
- Thermal break tapes where required
- Breathable installation to prevent condensation
3. Installation Process
We follow a strict moisture control methodology:
- Inspect and clean the substrate
- Select the correct sarking product for the cladding type
- Install with correct overlaps and direction
- Seal all penetrations, joints, and fastener holes
- Apply pressure-taped joins using approved adhesives
- Integrate into cavity system with battens and flashings
- Conduct QA check before cladding is installed
We install sarking with the same precision and accountability as our cladding panels — because failure behind the facade is just as costly.
4. Compliance & Quality Assurance
Our installation meets:
- AS/NZS 4200.1 – Material performance of sarking
- AS/NZS 4200.2 – Installation of pliable building membranes
- NCC condensation management requirements
- Manufacturer detailing and fire-rating guidance
- Project-specific fire engineer cavity detailing
All works are documented with:
- Installation photos
- Batch numbers and brand of materials
- ITP sign-offs and joinery inspection records
5. Deliverables & Handover
We provide:
- Sarking layout and direction photos
- Product brand and specification details
- Tape/adhesive batch and installation proof
- Signed ITP forms
- Summary report for fire engineer or consultant
Need to match these details to a cladding system warranty? We can align it all for you.
6. Why It Matters
✅ Protects building from moisture ingress behind the cladding
✅ Helps control condensation and mould
✅ Ensures correct cavity ventilation
✅ Required for full cladding compliance
✅ Supports fire safety and thermal performance
Outcome:
Correct sarking installation doesn’t just tick a compliance box — it forms the protective backbone of your entire facade system.
We make sure it’s installed right, tight, and ready to perform.
If you’re ready to get started, we're ready to help.
Take the next step and let’s build something that lasts.
📞 Call Us: 0410 515 509
✉️ Email Us: hello@atomicprojects.com.au
— Ben Tran, General Manager, Atomic Projects
