Projects

Minnesota State Capitol

Location

Saint Paul, MN

Architect

HGA Architects

General Contractor

JE Dunn

Industry

Government & Civic


The Minnesota State Capitol Restoration Project is a $272.7 million, three plus-years restoration, renovation and repair initiative. Work began in fall 2013 and ended in 2017.

The Capitol was built in 1905 and, after more than a century of use, has reached a critical deterioration point:

  • Inefficient and cumbersome spaces for the public
  • Crumbling exterior marble and stone
  • Life-safety concerns
  • Antiquated mechanical, electric and plumbing systems

Systems: Copper Finial Roof: 260 square feet of 20 ounce copper; finished in Gold Leaf Guilding.

Applied new gold left guilding.

Removed documented and cataloged original copper roof and architectural elements. Upper architectural elements were moved to MG McGrath shop to be repaired.

Parge original substrate with mortar to repair damages and create a smooth surface with positive drainage.

Installed Ice and Water shield membrane over concrete substrate

Installed new stainless steel roof system as a back up roof.

Installed another layer of ice and water shield over stainless steel roof

Installed steel reinforcing to brace steel rod that supports copper ball.

Installed  new copper roof system.

Strip gold leaf guilding from decorative architectural elements, repair fractures and dents and reinstall.

McGrath didn’t just show us what the next steps were, they took them with us. The project came out better than we imagined because they were involved.

Steve Berg Principal, BWBR Architects