How to Evaluate Aluminium Window & Door Installations for Coastal Suburbs

When homeowners in coastal or near‑coastal suburbs plan upgrades or renovations, the choice of window and door materials takes on added importance. Aluminium frames are increasingly popular due to their light weight, resistance to corrosion, and range of design options. In this guide, we’ll walk through key considerations, common pitfalls, and maintenance best practices you should be aware of when arranging aluminium glazing works.

Why Aluminium Is a Strong Option for Humid or Coastal Environments

Corrosion resistance: With proper anodizing or powder coating, aluminium stands up better to salty air than untreated metals.
Durability and strength: Aluminium allows slim profiles while maintaining structural integrity—ideal for large window or door panels.
Thermal performance: Aluminium can be fitted with thermal breaks, double or triple glazing to reduce heat transfer.
Design flexibility: It’s easier to customize shapes, sizes, colors, and even integrate with sliding or stacking systems.

Key Factors to Assess Before Installation

1. Frame Thickness, Profiles & Finishes

Thicker frame walls and quality extrusions reduce deflection and improve longevity. Always confirm the thickness and mechanical strength of the profiles. The surface finish—whether powder coating or anodizing—must be rated for coastal exposure.

2. Thermal Breaks and Glazing Options

Avoid single‑sheet glazing in warmer or humid climates. Opt for double or triple glazing, and insist upon thermal breaks (plastic or polyamide sections) to prevent heat bridging through the aluminum.

3. Sealants, Gaskets & Drainage

Proper water management is essential. Check that designs include drainage channels, overlap thresholds, and robust EPDM (or equivalent) gaskets and seals.

4. Hardware Quality & Security Features

High quality hinges, multipoint locks, and reinforced sash corners contribute to both operation longevity and security. In coastal environments, zinc or chrome plating alone may corrode; opt for stainless or suitably protected hardware.

5. Installation Quality & Tolerances

Even premium materials fail with poor installation. Expect straight, level mounting, consistent reveals, and accurate tolerances. Insist on warranties that cover frame warping, seal failure, or finish degradation.

Maintenance Tips to Extend Lifespan

Rinse frames annually with fresh water to remove salt deposits or airborne pollutants.
Lubricate tracks, hinges, and moving parts periodically with silicone or dry‑film lubricants.
Inspect and replace worn gaskets or seals to prevent leaks or drafts.
Touch up chipped coatings promptly (after proper cleaning) to prevent corrosion starting points.
Schedule regular checks (every 3–5 years) to confirm drainage holes are clear and structural screw fixings remain tight.

When to Engage a Specialist Installer

If your project involves large panels, unusual geometries (arched or pivoting units), heritage preservation requirements, or high wind zones, bring in a specialist early. They’ll help validate structural loads, perform mockups, and ensure that the system meets local building codes and wind load standards. It’s also wise to cross‑compare bids not just by price, but by documented technical specs, expected warranty, and service track record.

For an example of a company offering aluminium door and window services (for reference, not an endorsement), refer to installing aluminium windows and doors in Durbanville.