Aluminium Window Installation and Waterproofing Guide

1. Introduction: Why AS 2047 Compliance Matters

For contractors and installation teams working in Australia, AS 2047 is the essential benchmark for external aluminium windows and doors. The standard defines mandatory performance tests — including water penetration, air infiltration, structural strength and operating force — ensuring that every installed window performs reliably under real environmental conditions.

However, AS 2047 compliance depends not only on the window system but also on the installation and waterproofing method. A fully compliant product installed incorrectly can still fail water penetration tests.
This guide integrates AS 2047 requirements, AGWA-recommended installation practices and Hanstim’s system design to help contractors achieve consistent, leak-free, long-lasting installations.

2. Understanding AS 2047 Requirements (Contractor’s View)

A quick overview for installation teams:

• Structural strength & deflection — Window frames must withstand site wind pressure conditions without excessive deformation.
• Water penetration resistance — No leakage under simulated wind-driven rain.
• Air infiltration — Ensures energy performance and indoor comfort.
• Operating force & hardware integrity — Smooth operation under load.

For commercial and residential projects, AS 2047 certification is mandatory. Choosing a supplier with verified test reports simplifies compliance, reduces on-site risks and avoids future liability disputes.

3. Why Hanstim Is a Trusted AS 2047 Aluminium Windows Supplier

Hanstim focuses on supplying engineered aluminium window systems designed specifically for AS 2047 and AGWA construction practices. Its B2B-oriented production ensures quality consistency for large projects and repeat procurement.

✔ Structural Strength

• 1.6–2.0 mm wall thickness high-strength aluminium profiles
• Supports high wind pressure zones, including coastal and high-rise applications
• Ensures stability and reduced frame deformation during installation

✔ Waterproof System

• Dual-layer waterproof structure
• Integrated drainage channels and weep holes
• Prevents pressure build-up and water trapping inside the frame

✔ Premium Sealing Materials

• Neutral-cure silicone (non-corrosive, high adhesion)
• EPDM gaskets for long-term flexibility and airtightness

✔ Glass System Options

• 5+5 mm insulated units, Low-E, laminated or safety glass
• Suitable for hot, humid, coastal and mixed climates across Australia

✔ Installation Compatibility

• Fully compatible with Timber Reveal and stainless-steel flashing systems
• Matches AGWA-recommended detailing for modern builds

✔ Long-Term Maintenance Design

• Modular frame structure for easy part replacement
• Reduces lifetime service cost for builders and owners

4. Installation & Waterproofing Guide (AGWA-Recommended)

4.1 Pre-Installation Preparation

• Check design wind pressure rating — Match window performance with site classification.
• Verify rough opening size — Ensure square, plumb, level building frame.
• Use correct packers — Prevent frame distortion and maintain load transfer integrity.

4.2 Fixing the Frame

• Position the aluminium frame using packers.
• Use corrosion-resistant fixings suitable for the structure (timber, steel or masonry).
• Fix through jambs or brackets according to manufacturer recommendations.
• Recheck frame squareness after fixing to avoid sash misalignment.

4.3 Flashing & Moisture Protection

This is the core of waterproofing — and most common cause of failure in non-compliant projects.

Essential flashing components:

• Head flashing — Extends beyond cladding edges to shed water.
• Jamb flashing — Extends past window height to direct vertical water flow.
• Sill flashing or sill pan — Critical where decks, balconies or wet zones connect with the façade.

AGWA Best Practices:

• Flashings must overlap progressively to create a continuous water-shed path.
• Avoid horizontal joints that can trap water.
• Protect window-to-wall junctions with neutral-cure silicone and EPDM seals.

4.4 Drainage & Weep Hole Management

Hanstim’s profile incorporates internal drainage channels — but proper installation is essential:

• Align frame drainage paths with external cladding drainage lines.
• Ensure weep holes are fully exposed and unobstructed.
• Never apply sealant over drainage holes.
• Verify water discharge direction before final sealing.

4.5 Timber Reveal / Sub-Frame Integration

If using timber reveal (very common in Australia):

• Use neutral-cure silicone between aluminium frame and timber reveal.
• Install stainless steel head flashing over reveal.
• Wrap reveal connections with waterproof membrane and integrate with building wrap.

4.6 Glass, Gasket & Sealant Finishing

• Install EPDM gaskets without stretching.
• Ensure consistent pressure along the entire sash perimeter.
• Apply exterior silicone to frame-cladding junction in a continuous, smooth bead.

5. Long-Term Maintenance for Leak-Free Performance

A key differentiator compared with competitor guides is including lifecycle maintenance — essential for builders and facility managers.

Recommended Maintenance Schedule:

• Every 6–12 months — Clear drainage holes & clean tracks
• Every 12–24 months — Inspect silicone, EPDM gaskets, flashing edges
• Every 6 months — Lubricate hardware (hinges, rollers, locks)
• As needed — Replace worn seals or damaged components (Hanstim’s modular design facilitates this)

Proper maintenance significantly reduces water infiltration, operational issues and after-sales disputes.

6. Documentation & Compliance Checklist for Contractors

To reduce risk and support project audit trails, Hanstim recommends contractors keep the following:

• AS 2047 compliance certificates
• Water penetration & wind pressure test reports
• Installation drawings / shop drawings
• Site photos before and after flashing
• Silicone & sealant specification sheets
• Maintenance handover documents

Providing complete documentation is a strong differentiator for professional builders.

7. Why Contractors Trust Hanstim for AS 2047 Aluminium Window Supply

Choosing Hanstim means:

• Repeatable product quality for ongoing B2B procurement
• Reduced installation risk thanks to stronger frame engineering
• Faster installation due to compatibility with AGWA methods
• Lower long-term repair cost from modular design
• Full support from a supplier built around exports, quality control and international standards

For builders and installation teams aiming for consistent, compliant and powerfully waterproof installations, Hanstim delivers both technical advantages and long-term project value.

8. Conclusion

Proper aluminium window installation is a combination of AS 2047 performance, AGWA-compliant waterproofing and choosing the right window supplier. By integrating high-strength frames, dual-layer waterproofing, EPDM sealing and engineered drainage systems, Hanstim provides contractors with a reliable, compliant and installation-friendly aluminium window solution.

When performance, durability and waterproof reliability matter, Hanstim is a trusted AS 2047 aluminium windows supplier for commercial and residential projects.