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Anodized aluminum corrosion
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Anodized aluminum corrosion
The cold weather, ice and snow take their toll on commercial properties. Since the winter elements are safety hazards, immediate removal is critical. This is an important safety measure to ensure building occupants and visitors do not slip and fall, but materials that help melt the ice and snow often lead to metal deterioration.
Aluminum is known for its ability to resist corrosion well, but it can corrode under certain circumstances. Unfortunately, exposure to salts in ice melt is one of those circumstances. Metal corrosion is a concern primarily in parking garages due to the steel rebar that is in the concrete to reinforce it.
The common dry non chloride deicers that are used to avoid corrosion are CMA (Calcium Magnesium Acetate), sodium acetate and urea. The primary non chloride liquid for anti-icing use on pavement is potassium acetate. Note that none of these chemicals have the word “chloride” in them.
A few chloride-based deicers are claiming to be “less corrosive”. These products contain 95 – 99 percent chlorides and have about one 1 percent CMA added. CMA costs about 20 times as much per pound as salt; this is why only a “pinch” can be added to a common deicer. There is currently no evidence supporting the claim that adding any amount CMA to salt helps reduce the corrosiveness of chlorides.
If the price non-corrosive deicer exceeds your budget, there are some steps you can take to minimize the corrosion process and avoid costly repairs:
- Place mats both outside and inside all entrances
- Increase frequency of cleanings
- Try to keep the snowmelt from building up on any of your metal
- Once warmer temperatures arrive, pressure wash areas exposed to ice melt
For more information on how to protect and maintain your building’s exterior through the winter, contact KC Restoration today. We are the trusted experts in restoration, beautification and preservation. Keep your metal clean and shiny with regular maintenance services!
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Mirror finished stainless steel