GM Exteriors is Ontario’s premier full-service specialty siding contractor, trusted by architects, developers, and property managers for over two decades. We deliver durable, energy-efficient, and visually striking exterior solutions tailored to industrial, commercial, institutional, and residential properties.
From fiber cement and engineered wood siding to aluminum and phenolic cladding, we offer the industry’s top materials from leading manufacturers. Whether enhancing curb appeal or ensuring long-term performance, our expert team provides superior installation and craftsmanship.
GM Exteriors is Ontario’s premier full-service specialty siding contractor, trusted by architects, developers, and property managers for over two decades. We deliver durable, energy-efficient, and visually striking exterior solutions tailored to industrial, commercial, institutional, and residential properties.
From fiber cement and engineered wood siding to aluminum and phenolic cladding, we offer the industry’s top materials from leading manufacturers. Whether enhancing curb appeal or ensuring long-term performance, our expert team provides superior installation and craftsmanship.
Durable siding systems for every building type.
We offer high-performance siding options including fiber cement, engineered wood, and aluminum. Designed for weather resistance and long-term visual appeal, our siding installs are built to last.
Advanced cladding solutions engineered for performance.
From phenolic panels to thermally broken systems and ACM, our cladding solutions are ideal for commercial, industrial, and residential builds. We focus on structural integrity and energy efficiency.
We handle every step—consultation, measurement, installation, and post-install inspections—to ensure precision and quality. Explore our extensive portfolio to see how we’ve transformed buildings across Ontario.
Mon–Fri: 7:00 AM – 5:00 PM
Sat–Sun: Closed
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