Copper Siding on Overland Elementary Not Expected to Turn Green – Rochester Minnesota News, Weather, Sports

Why was copper cladding chosen for the new Overland Elementary School? Wouldn’t that cost a lot more compared to other options? – JS

Ah yes, the copper cladding. It definitely costs a little more than the pretty penny it resembles, but I’ve been told it was still good business overall.

According to the insiders, the siding cost $ 508,950, about $ 175,000 less than the estimated cost.

So hats off to whoever cut coupons that day.

I spoke to architect Kevin Holm, who didn’t know how much more expensive the siding would have been compared to other materials. However, he made it clear that materials are not the most expensive part of a project.

“The actual cost increase is pretty small when you talk about non-ferrous metals versus ferrous metals,” said Holm. “If you look at any material in construction, the material cost is generally 50% plus or minus the labor cost.”

For those who do not have an architect-lay dictionary on hand, “non-ferrous metals” refers to those that do not contain iron. In other words, it means they won’t rust.

And that brings us to the reason copper was chosen in the first place.

“It significantly reduces maintenance,” said Holm. “In theory, this copper never needs to be repaired or improved.”

However, it changes color, a process known as “patina”. As in “It should patina over time.” In other words, it should take on a darker shade, closer to a bronze color.

However, he said the new elementary school shouldn’t be destined for the same result as the Statue of Liberty, another copper-clad project.

“It shouldn’t turn green in our lifetime,” said Holm. “The reason for the patina (of the Statue of Liberty) is acid rain, and in the Midwest we just don’t have that unless you are near a factory or plant.”

Since Overland Elementary is surrounded by residential neighborhoods, in my opinion it is safe to avoid acid rain falling on it and it will turn green.

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