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Minnesota State Capital, St. Paul, Minn

The Minnesota State Capital in St. Paul, Minn., underwent a renovation and restoration with the original copper roof removed, documented and cataloged. Metal installer and fabricator MG McGrath, Maplewood, Minn., repaired some of the upper architectural elements. The original roof was installed in 1902 and historic restoration needed to be as original as possible. The process included documenting the roof's development and filing paperwork with the Minnesota Historical Society. The roof is a 260-square-foot copper finial roof consisting of 20-ounce copper provided by Revere Copper Products Inc., Rome, N.Y., with a natural finish and gold leaf gilding. The restoration process also included installing one layer of Cambridge, Mass.-based Grace Construction Products' Ice and Water Shield over the roof's concrete substrate and another layer of the Ice and Water shield went over the new stainless steel roof system supplied by Firestone Metal Products Inc., Anoka, Minn. Steel was installed to reinforce and brace the steel rod that supports the copper ball that defines the top of the roof structure. The restoration is expected to last more than 100 years. HGA, Minneapolis, served as the project architect, and JE Dunn, Minneapolis, was the general contractor

Grace Construction Products, www.na.graceconstruction.com

Firestone Metal Products Inc., www.firestonemetal.com

Revere Copper Products Inc., www.reverecopper.com