
Concrete & Masonry Repair & Restoration
Our Concrete & Masonry Repair & Restoration Division offers several services that complement our Industrial Cleaning & Coatings, Commercial Painting and Fireproofing Divisions.
We offer our services to containment structures, parking garages and decks, and the restoration of historical icons like the Divine Lorraine, one of the most historical landmarks in Philadelphia, PA! Moravian University, the 6th oldest university in the United States, also selects G.C. Zarnas to preserve their buildings. Even the government has called on the expertise of G.C. Zarnas to preserve its national treasures!
Our clients rely on the expertise of G.C. Zarnas professional estimators and project leaders who provide safe, quality solutions to maintain, lower costs, and provide beauty and security… protecting their investments for years to come!
Services include:
- Masonry and concrete repair
- Structural strengthening
- Coatings and waterproofing
- Expansion joints
- Caulking and sealants
- Brick and stone pointing
- Blasting services including sponge, ice and more!

Façade work:
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- Brick, block, and stone repointing
- Brick, block, and stone removal and replacement
- Stone and block replacement
- Stone dutchman repairs
- Grout injection
- Low- and high-pressure water cleaning
- Chemical cleaning
- Abrasion blast cleaning
- Sealant replacement
- Lintel and shelf angle replacement
- Flashing
- Coping stone removal and replacement
- Façade investigation

“Team Zarnas was honored to have received the Alvin H. Butz Construction 2023 Special Recognition Award for their concrete repair and waterproofing at Cedar Crest College in Allentown, PA. As defined, loyalty, responsiveness, consistency, and superior service or craftsmanship are the hallmarks of the Special Recognition Award recipient.”
The Concrete and Masonry Division was presented a 2024 Safety Award by the General Building Contractors Association of Philadelphia. G.C. Zarnas received the award for their safe practices while replacing a 13,000 square ft elevated parking deck with new concrete and metal decking. Rodin Place Property Manager John Romeo says “Safety is paramount with G.C. Zarnas. I highly recommend G.C. Zarnas to PennDOT based on their level of expertise, communication, and partnership with their customers, structural engineers, and city inspectors.”
Projects
Cedar Crest College
G.C. Zarnas receives the Alvin H. Butz 2023 Special Recognition Award for outstanding service at Cedar Crest College! The multi-component coatings system applied to the deck of the Thompkins Center Terrace mitigated water migration into the lower-level food prep...
Parking Deck Philadelphia
A 13,000 sq. ft. elevated parking deck in center-city Philadelphia received a complete replacement of concrete and metal at the hands of the Concrete and Masonry Division...and a Safety Award for their work from the General Building Contractors Association...
Hunterdon Medical Center, Concrete Floor Coatings
Through our Concrete and Masonry Repair and Restoration Division, G.C. Zarnas repaired and applied new concrete floor coatings to the hospital's mechanical room. We understand the logistical challenges of finding a contractor who can perform large or small jobs. ...
Concrete Repairs to Member of Global Parking Management Company
Through our Concrete and Masonry Repair and Restoration Division, G.C. Zarnas was selected to perform precast column repair at one of the Nexus parking garages in New Jersey, a member of a global parking management company. In addition to parking garages and decks, we...
Philadelphia’s Most Historical Structure Turns to Zarnas Expertise
We were honored to provide our restoration services, including abatement, painting, and wall coverings, to the Divine Lorraine Hotel, Philadelphia's most historic structure. The $44 million renovation was completed in 2017. This Victorian landmark in North...