The parapet top often needs protective caps to shield it from the elements. Aluminium copings are adaptable solutions intended to safeguard and embellish freestanding walls. They provide an appealing finishing touch to the wall and serve the crucial function of preventing water infiltration, which could otherwise lead to structural damage due to weathering or freezing.
The lightweight nature of aluminium coping does not compromise its durability, making it well-suited for withstanding high wind loads, temperature fluctuations, and other environmental challenges. Its bright finish is also aesthetically pleasing and stands out against brick, stone, concrete and other common wall materials.
The Benefits of Aluminium Coping
Durability – Aluminium has an exceptional strength-to-weight ratio and resists dings, abrasions and punctures far better than thinner gauge metals. Modern finishes make it extremely weather-resistant as well. This durability translates into a long service life – warranties of 35 years or more are common.
Low Maintenance – Properly finished aluminium requires almost no maintenance other than occasional cleaning. It won’t rust, corrode, rot or decay like other materials. This saves on upkeep costs in the long term.
Lightweight – Pound for pound, aluminium coping weighs far less than steel, zinc or copper options. This allows for easier handling and installation and may allow the use of less substantial/costly substrates.
Thermal Consistency – Aluminium coping maintains its shape and strength through extreme temperature fluctuations. This consistent thermal performance is important for parapets and locations with severe weather swings.
Recyclable and Eco-Friendly – Recycling aluminium requires far less energy than creating new metal. And it can be recycled infinitely without quality loss, making aluminium coping a sustainable choice.
Installation Best Practises
Proper installation ensures aluminium coping performance and longevity on masonry walls. Here are some key guidelines:
Precise sizing and fabrication – Coping pieces must be cut and formed to fit the wall dimensions nearly perfectly. Even small gaps can allow water intrusion, which may cause leaks or freeze-thaw damage.
Waterproofing underlayment – Self-adhering waterproof membrane along the top of the parapet or wall is recommended prior to aluminium coping installation. This offers a second line of defence against moisture penetration.
Proper fastening – Per industry standards, aluminium coping should be fastened to the substrate at least every 18 inches in the centre (more closely for high wind zones). Stainless steel screws with neoprene washers are recommended for corrosion resistance. Fastener holes should be slightly oversized.
Joint caulking – A high-quality polyurethane sealant matching the coping finish colour helps prevent water ingress through butt joints and mitres. All joints are to be caulked after installation per the manufacturer’s guidelines to allow for thermal expansion.
Overlapping seams – Long sections of coping should include slight overlaps (around 1/4 inch) to allow for expansion and prevent exterior drips from running beneath the aluminium during temperature changes.
Concluding Thoughts
Aluminium copings offer durability and aesthetic appeal for parapet walls. As you have learned, these versatile solutions have a wide range of applications. When properly installed, aluminium caps provide long-lasting weather protection. Their sleek metallic finish also enhances the look of any building.
Whether designing a new structure or renovating an existing one, consider incorporating aluminium copings. Their longevity and low-maintenance qualities make them a smart choice for home builders, architects, and construction professionals alike. Upgrade your parapet walls with beautiful aluminium caps that will stand the test of time. Let their strength and style elevate your next project.