Sydney’s coastal climate exposes us to dynamic weather patterns and salt air. These contributing factors mean that mortar and metals deteriorate faster than inland regions.
Lintels and arch bars have a life span of around 30-40 years. If your lintels or arch bars are visibly rusting, cracking the brickwork above or are pushing the surrounding brickwork – it is time to see a specialist!
HD Gal Lintels V Concrete Lintels – what’s the difference and why?
HD Gal lintels, made from Stainless Steel are is used above doorways & windows where the facade is brickwork.
We use Concrete lintels are for rendered surfaces, or when they are exposed to salt air. Concrete won’t corrode as quickly as metal.
Ultimately, the type of lintel we use depends on the desired finish and suitability of your building.
What does HD Gal mean?
Hot-dip galvanization is the process of coating the steel by immersing the metal in a bath of molten zinc. When exposed to the atmosphere, the pure zinc reacts with oxygen to form zinc oxide, which further reacts with carbon dioxide to form zinc carbonate, a usually dull grey, fairly strong material that protects the steel underneath from further corrosion in many circumstances.
Galvanized steel is widely used in applications where corrosion resistance is needed, and is considered superior in terms of cost and life-cycle. It can be identified by the crystallization patterning on the surface (often called a “spangle”).