DE PERE, Wis. (WBAY) – The city of De Pere is getting more environmentally friendly.
It is replacing 8,000 square feet of its city hall roof with a green roof.
It uses the existing roof and seals it for leaks before laying dirt and planting sedums. Those plants can take care of themselves with little weeding and can withstand cold winters.
The roof insulates well in the winter and absorbs heat in the summer, saving on energy costs year-round.
“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,” said city administrator Larry Delo. “And then of course, it collects the storm water, versus just kicking it off the roof.”
Officials say the roof will pay for itself in energy savings within the next 19 years. It won’t need to be replaced for at least 50 years.