Repair Systems — 03 — Facade & External Envelope
Code 6 heavy duty lead cavity flashing
Supplier reference for Code 6 heavy duty milled lead cavity flashing (2.65mm, 30 kg/m²) for masonry facade remediation on Class 2 strata buildings. The heaviest standard lead code — for parapet copings on exposed coastal buildings and engineer-specified applications where maximum fatigue resistance and service life are required.
What is Code 6 heavy-duty milled lead flashing?
Code 6 milled lead sheet (2.65mm, 30 kg/m²) is the heaviest standard lead code for masonry cavity flashing — specified for the most demanding applications including exposed parapet copings on coastal buildings, high-rainfall parapets, and engineer-specified heavy-duty cavity flashing where maximum fatigue resistance and longevity are required.
Product Reference
2 products — 2 suppliers — Code 6 heavy-duty milled lead flashing — scroll to view all
Midland Lead Australia — Code 6 Milled Lead Sheet
Code 6 milled lead sheet — heavy-duty and engineer-specified flashing
System Description
Midland Lead Australia's Code 6 product is the heaviest standard lead code for masonry cavity flashing. Specified for the most demanding applications — exposed parapet copings on coastal buildings, and where the structural engineer has nominated Code 6 for fatigue or longevity reasons. Supplied in 3m and 6m rolls in standard widths. Available through plumbing and building materials merchants nationally. Confirm current stock and availability with local merchant before specifying.
Technical Properties
- Code: Code 6 — heavy-duty and engineer-specified flashing grade
- Thickness: 2.65mm
- Weight: 30.05 kg/m²
Limitations
- Very heavy — 30 kg/m² — delivery to parapet level on high-rise strata requires scaffold materials handling planning
- Not suitable for contact with zinc-coated or galvanised steel without isolation strip
- Not available in all merchant stock locations — confirm availability before specifying
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
Austral Lead — Code 6 Milled Lead Sheet
Code 6 milled lead sheet — Australian supply
System Description
Austral Lead supplies Code 6 milled lead sheet through plumbing and building materials merchants. Equivalent to Midland Lead Code 6 specification. May not be held as standard merchant stock — confirm availability with merchant before specifying and allow lead time if required.
Technical Properties
- Code: Code 6 — heavy-duty and engineer-specified flashing grade
- Thickness: 2.65mm
- Weight: 30 kg/m²
Limitations
- May not be held as standard merchant stock — allow lead time when specifying
- Availability varies by state — confirm before specifying
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
System Comparison
Side-by-side comparison of Code 6 milled lead flashing suppliers. Confirm all product selections with current supplier before specifying.
| Supplier | Code | Thickness | Weight | Distribution | Key feature | Primary use |
|---|---|---|---|---|---|---|
| Midland Lead | Code 6 | 2.65mm | 30 kg/m² | National — Midland distribution network | Maximum standard lead thickness | Parapet coping — coastal / high-exposure / engineer-specified |
| Austral Lead | Code 6 | 2.65mm | 30 kg/m² | Plumbing merchants — state-dependent | Australian supply chain | Heavy-duty parapet / engineer-specified |
Do not confuse Code 6 lead flashing with:
- Code 5 lead flashing (2.24mm, 25 kg/m²) — standard parapet grade — appropriate for most parapet applications unless engineer specifies Code 6 — listed on the Code 5 lead flashing page
- Code 4 lead flashing (1.8mm, 20 kg/m²) — standard cavity flashing grade for base of cavity and over lintels — not appropriate for parapet copings in exposed locations — listed on the Code 4 lead flashing page
- Aluminium cavity flashing — not self-sealing at laps, not always suitable for coastal environments — listed on the cavity flashing — aluminium page
- Alcore composite flashing — bitumen-aluminium laminate — lighter, easier to install but different performance characteristics — listed on the cavity flashing — Alcore page
Disclaimer
This page provides general technical information only. Lead code selection, flashing width, lap detail, and weep former spacing must be confirmed by a qualified remedial practitioner and structural engineer against project-specific conditions and AS 3700.