Investing in a new shed is always a large decision. A question we get asked often is:
Hot dipped galvanised steel vs painted - what is the right one for me?
In this article, we compare the two and what we recommend for different shed types.
Hot dip galvanised steel, is steel covered in a zinc coating to protect the steel from corrosion.
The galvanising process involves cleaning the steel and dipping it in a 'bath' of molten zinc solution at temperatures around 450 degrees. The liquid zinc adheres to the metal and when you pull the metal out of the bath the zinc hardens. This results in a really hard outer coating of zinc, protecting the inner steel core from moisture and other corrosion.
Technically yes, however, hot-dipped galvanized steel resists corrosion in numerous environments for much longer than uncoated steel.
Whether it is paint or galvanised steel, any coating is designed to protect the base material. The coating corrodes instead of the core material. Any moisture and corrosive materials (including oxygen in the air) will eat away the coating first before oxidising the metal underneath.
When you have a galvanised coating the zinc will oxodise instead of the metal it is coating. Zinc oxidises slower than uncoated steel, preserving your sheds structural integrity.
Paint is the more traditional and cost effective way of protecting your shed against the elements. The steel is sand blasted to clean any mill-scale and to roughen it the surface so the paint will stick. The paint is then sprayed onto the clean steel surface of the metal to provide a protective layer.
The thick zinc rich paint we use providesr a layer of the zinc on the materials surface to further help with corrosion resistance.
However, paint is softer and thickness can vary. This means that the painted coating is susceptible to chips and scratches, exposing the underlying metal to corrosion.
Paint will stick to anything, including galvanised steel. If you are wondering how to paint galvanised steel, it involves a number of steps. Simply put:
There are advantages and benefits for both painted and galvanised sheds. The choice comes down to you and your needs.
Painting is no doubt the most cost effective coating system we provide. Whist it provides adequate protection many situations there are some applications where galvanising is strongly recommended. These Include:
If you still have questions about which option is best for you give us a call on
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