Dramatic luxury roofline against twilight sky

STRUCTURAL

INTEGRITY

Roofing & Exterior Craftsmen — Est. 2008

850+

Projects Completed

17

Years of Precision

100%

Licensed & Insured

25yr

Material Warranty

Material Atelier

Every Surface, A Statement

We source and install only the finest exterior materials — each chosen for its endurance, beauty, and structural performance.

Slate roofing material texture
MAT-001 / Natural Stone

Slate

Wind Rating150 MPH
Lifespan75–100 Years
Fire RatingClass A
R-Value0.05/inch
Copper roofing material texture
MAT-002 / Premium Metal

Copper

Wind Rating175 MPH
Lifespan60–100 Years
Fire RatingClass A
PatinaNatural Verdigris
Cedar roofing material texture
MAT-003 / Natural Wood

Cedar

Wind Rating110 MPH
Lifespan30–50 Years
InsulationR-0.97/inch
TreatmentPressure Sealed
Zinc roofing material texture
MAT-004 / Standing Seam

Zinc

Wind Rating180 MPH
Lifespan50–80 Years
Fire RatingClass A
Gauge0.7mm Standard
Asphalt roofing material texture
MAT-005 / Dimensional Shingle

Asphalt

Wind Rating130 MPH
Lifespan20–30 Years
Fire RatingClass A
Impact RatingClass 4 / IR
Scroll to explore
Our Process

Precision at Every Phase

01

Consultation

We begin with a thorough property assessment and architectural review to understand your vision and structural needs.

02

Engineering

Our team develops precise specifications, material selections, and a detailed project blueprint tailored to your property.

03

Construction

Expert crews execute with millimetric precision, following strict quality protocols at every stage of the build.

04

Protection

Every project is backed by comprehensive warranties and scheduled maintenance programs for lasting performance.

Project Gallery

Built to Endure,
Designed to Inspire

The Meridian Residence
Metal Roofing

The Meridian Residence

Calgary, Alberta

A complete exterior transformation featuring an aluminum standing seam roof system with custom flashing and integrated drainage architecture. Engineered to handle Calgary's freeze-thaw cycles and heavy snow loads.

Harbourview Estate
Roofing

Harbourview Estate

Calgary, Alberta

A full residential roofing replacement on a two storey Calgary home. We installed a Class 3 impact-rated architectural asphalt shingle system, complete with new underlayment, ice and water shield, and seamless flashing details. Built to handle extreme weather.

Lakeside Retreat
Metal Roofing

Lakeside Retreat

Orillia, Ontario

A full standing seam metal roof installation on a lakeside cottage. We fitted a charcoal steel panel system across a complex multi-plane roofline, including integrated skylight flashing and custom valley details — engineered for low maintenance and decades of performance.

Cedarhill Modern
Roofing

Cedarhill Modern

Calgary, Alberta

A full tear off and replacement on a residential roof. The crew stripped the existing shingles down to the deck, installed fresh underlayment and ice & water shield, then laid a Class 3 asphalt shingle system for a clean, durable finish built to last.

Rockview Barnhouse
Metal Roofing

Rockview Barnhouse

Calgary, Alberta

A new construction roofing package on a modern farmhouse build. We installed a standing seam metal roof over the wraparound porch canopy and a dimensional asphalt shingle system on the main structure — delivering a clean contrast of materials built to last in any climate.

Alpine Ridge Cabin
Metal Roofing

Alpine Ridge Cabin

Banff, Alberta

A standing seam metal roof installation on a remote mountain cabin nestled in the Rockies. We fitted a bronze steel panel system across the multi-pitch roofline, engineered to shed heavy snow loads and withstand the extreme alpine climate year-round.

Stonegate Exterior
Siding

Stonegate Exterior

Calgary, Alberta

A full exterior siding replacement on a three-storey Calgary home. We installed a lap siding system with crisp white trim details, refreshing the entire facade for a clean, modern look that complements the stone accents and existing architecture.

Burgundy Ridge Residence
Metal Roofing

Burgundy Ridge Residence

Toronto, Ontario

A full standing seam metal roof installation on a classic brick bungalow. We fitted a deep burgundy steel panel system across the entire roofline, including custom hip details, chimney flashing, and precision cut valley work transforming the home's profile while delivering decades of low maintenance performance.

Parkside Townhomes
Siding

Parkside Townhomes

Calgary, Alberta

A new construction siding package on a multi-unit townhome development. We installed a dual-tone vinyl siding system combining crisp white board & batten on the upper floors with slate grey lap siding on the lower levels — delivering a modern aesthetic built for low maintenance and long-term durability.

Grandeur Manor
Slate Roof

Grandeur Manor

Kawartha Lakes, Ontario

A premium natural slate roof installation on a grand estate property. Each slate tile was hand-laid and individually fastened across a complex Mansard-style roofline featuring copper dormer flashing and curved eave details — a project demanding the highest level of craftsmanship and precision.

Client Testimonials

Trusted by Homeowners
Across Canada

"

GMT transformed our home completely. The standing seam metal roof they installed is flawless, the attention to detail was something we've never seen from any other contractor. Truly exceptional craftsmanship.

Michael T.

Calgary, Alberta

Standing Seam Metal Roof
FAQ

Common Questions

Structural Estimator

Your Project Begins Here

ServiceMaterialDetails
Contact Us

Let's Talk
About Your Project

Based In

Calgary, Alberta

We serve residential and commercial clients across Alberta and Ontario. All estimates are free with no obligation.

GMT
GMT roofing & Exteriors

Redefining exterior craftsmanship through precision engineering and architectural excellence since 2008.

Direct Line to Lead Architect

Navigation

AboutContact Page
© 2026 GMT Roofing & Exteriors. All rights reserved.Licensed & Insured