McLean County Museum of History

Western Specialty Contractors Replaces Leaking Roof in Bloomington, IL
McLean County Museum of History, Helps Save Historic Relics

Extensive water damage from an aging roof threatened to destroy treasured artifacts housed at the McLean County Museum of History in Downtown Bloomington, IL. The water intrusion resulted from a 30-year-old, damaged roof that had exceeded its useful life span by more than five years, allowing rain to leak through the roof and insulation, clay tile, and mortar down into the building’s ceilings and interior rooms.

The nationally accredited, the award-winning museum occupies the former McLean County Courthouse, an American Renaissance-style structure built between 1900 and 1903. The building features a limestone-clad facade and solid masonry construction with a steeply sloping roof connecting the built-in gutter to the clocktower dome rising from its center. The old roof consisted of a 4-ply, built-up asphalt roof over one-inch perlite insulation mopped to the clay tile deck.

Although the McLean County maintenance staff had repaired the roof over the years, it no longer functioned properly and needed to be replaced immediately, along with the historic building’s drainage system. According to reports, as much as 14 gallons of water had leaked into the building after heavy spring rains, causing extensive damage. Although the water had damaged no artifacts, one area of the museum had to be closed off, and an office was relocated due to the leaking roof.

In 2020, the McLean County Board agreed to hire Scharnett Architects & Associates of Bloomington to perform architectural and engineering services to replace the building’s roof and improve its drainage system. Western Specialty Contractors’ Peoria Roofing Branch was contracted to replace the historic building’s damaged roof, with work on
the project was starting in May 2021.

Western’s crew removed the old roof and replaced it with a Firestone UltraPly TPO roofing system consisting of an 80 mil white membrane over gypsum coverboard, Polyisocyanurate insulation, and vapor barrier directly over the clay tile deck.

“The entire job was very challenging. We had to stage materials on the grounds as we needed them because the old clay tile deck could not be overloaded,” said Western Specialty Contractors Peoria Assistant Branch Manager Jared Osterman. “Tearing off the old roof every day was equally difficult because we had to crane materials down and up from the street as we progressed.”

The architect designed the new TPO roof system to go above and beyond what the manufacturer recommended, with double membrane thick valleys and ridges and built-in gutters lined with TPO and terminated with a liquid flashing, three-course step. The liquid flashing was use in place of counterflashing to minimize the use of mechanical fasteners in the historic structure. The job also required a 30-year, 80 MPH Firestone Roof warranty, including hail, cut, and puncture resistance.

Western’s Springfield, IL Branch also participated in the project by grinding out reglets, reworking the clay tiles around the drain replacements, and cleaning and sealing limestone at the gutter edge.

Performing a successful mock system pull test to ensure the new roof’s viability and strength, Western completed the roof replacement in September 2021. The museum had been closed to visitors during the roof replacement project while its restrooms were remodeled and its lighting fixtures replaced.

Julie Emig, the museum’s Executive Director, noted that the staff was relieved when the roof was restored. “The quality of Western Specialty Contractors’ work, especially given the complexity of this project, was outstanding. We no longer
worry that the next rainstorm could damage our award-winning collections and exhibits.”

Auburn University Stadium | Auburn, IL

Western Specialty Contractors Tackles Tough Restoration Project at Auburn University

Western Specialty Contractors – Atlanta Branch recently tackled the job of restoring the stadium at Auburn University.

The iconic stadium was originally dedicated on Thanksgiving Day, 1939, before the first varsity football game was played. Although known primarily as a venue for football, the stadium has also hosted appearances by evangelist Billy Graham and musicians James Brown, The Beach Boys, Miranda Lambert, and Kenny Chesney, among others, throughout its history.

The concrete stadium seats 87,451 people and is one of the top 15 largest college stadiums in the U.S. Expanded 14 times since its original construction, with significant renovations in 2004 and 2017, the stadium required restoration and maintenance to prepare it for the 2022-23 football season.

Most sports stadiums and arenas in the United States are made of reinforced and precast concrete with steel seating supports and railings. Unfortunately, an even more universal characteristic is their openness and vulnerability to the elements — in addition to the wear and tear they receive from fans — all of these forces take a toll on a stadium’s structural integrity.

Without routine maintenance and protection, these concrete structures are subject to cracking, spalling, and structural damage from movement and reoccurring freeze and thaw cycles.

Western Specialty Contractors worked with Project Engineer Stephen Ward & Associates of Madison, AL, to analyze the type and extent of damage present in the stadium and recommend cost-effective, remedial measures to extend the facility’s life and keep fans safe. Cutting-edge, long-wearing deck coatings are often recommended to restore a stadium and protect it from future damage.

Western switched the primer on the treads to an epoxy primer due to the concrete having a concrete surface profile (CSP) of 8, with the coating manufacturer requiring a CSP of 3-4. The epoxy primer allowed workers to smooth out the overly rough areas before adding sand to the epoxy to give it the correct profile.

Western’s Atlanta team completed the project in August 2022, right on time for the university’s football season to begin.

Frost Bank Tower

Western has been working on the downtown Frost Bank building in Corpus Christi. The project consists of removing and replacing 110,000 lineal feet of sealants, cleaning the building and sealing 125,000 square feet, and also 35,000 lineal feet of window frame coating.

Ameristar Casino

250,000 Square Feet
Mechanically Fastened
.060 TPO Roof System

Berry Plastics

500,000 Square Feet
Mechanically Fastened
.060 TPO Roof System