De Pere plants a green city hall rooftop

City leaders say the green roof will pay for itself in energy savings

Dirt on city hall roof
(Photo: WBAY)

DE PERE, Wis. (WBAY) –  The City of De Pere is taking its efforts to be environmentally friendly to new heights.

The city is replacing 8,000 square feet of the city hall rooftop with a green roof.

The existing roof will be sealed for leaks, and then dirt will be laid down and sedums planted.

Those perennial plants can take care of themselves with little weeding and can withstand cold winters.

City leaders say the new roof will save energy and help with storm water collection.

“It has a very high R-factor for winter heat loss, but it also absorbs the sun and the heat during the summer, so your cooling costs go way down for those areas as well. And then, of course, it collects the storm water versus just kicking it off the roof,” City Administrator Larry Delo said.

City officials say the roof will pay for itself in energy savings within 19 years and won’t need to be replaced for at least 50 years.

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