EXPERT CRAFTMANSHIP, EXTREME SELECTION
Thank you for considering Keystone Exterior Finishes for your next project. Our company is committed to creating carefully planned and well-executed building exteriors that go above and beyond our client’s expectations. Specializing in a variety of exterior products, including Exterior Insulation Finish Systems (EIFS), stucco, stone installation and air/moisture barriers, we have a highly qualified team of sales professionals, project managers and master craftsmen who will listen to your wishes and provide you with exceptional results.



The EnduraMax Advantage
Every component of EnduraMax is specially engineered to integrate into a complete high-performance wall system. This total cladding system provides an energy-saving R13.6 insulation barrier and complete built in moisture management
Amazing, Consistent Results
EnduraMax was designed with an emphasis on easy, efficient installation. Masonry units are friction fit into pockets on the polystyrene foam. Mortar is then applied into the gaps between the fitted stones. This level of ease allows most experienced contractors to quickly become familiar with the Enduramax installation process.
The Three Essential Elements
1. Foam Installation Panels
Polystyrene panels offer a significant insulation advantage, along with drainage channels for complete moisture management. Recesses in the outside face of the foam form the installation pattern for masonry units.
2. Masonry Units
Durable stone, clay and concrete brick options offer endless unique looks. Also, they are heavier and sturdier that other veneer systems, providing years of low maintenance.
3. EnduraMax Mortar
Specially engineered Type-S mortar offers superior bond strength, adhesion, flexibility and stability, ensuring ultimate long-lasting durability.

EnduraMax Masonry Wall Systems
By integrating authentic Oldcastle stone and brick units into a continuous insulated foam layer, the EnduraMax High-Performance Wall System vastly outperforms other cladding options. During 10 years of research and development, we’ve ensured the EnduraMax system’s optimum performance across the board – providing lasting strength, resilience, comfort and safety.