Toronto & the GTA
Metal Roofing in Toronto & the GTA
If you're weighing a metal roof against another roofing system, this page covers what the choice involves, what affects an estimate, and what our metal roofing projects look like.
The decision
Metal compared with asphalt shingles
Most homeowners arrive here comparing the two. These are the differences that tend to decide it, and the trade-offs that come with each.
They are chosen on different timescales
Asphalt is normally replaced within the period a family owns the house. Metal is usually chosen with a longer horizon in mind, which is why the cost is generally weighed against how long you expect to keep the roof rather than against the quote on its own.
Trade-off: a higher figure at the outset, and a decision that is harder to revisit later.
They handle water and snow differently
A metal surface and a shingle surface behave differently as water and snow leave the roof. What happens at the eaves matters more as a result, and it is worth discussing before the system is chosen rather than after.
Trade-off: snow movement needs to be planned for, particularly above entrances, walkways and driveways.
Roof design affects metal more than it affects shingles
Shingles absorb complexity fairly easily. Metal panels are set out across planes, so hips, valleys, dormers and changes of direction have a larger effect on both the work and the estimate.
Trade-off: a complex roof narrows the sensible options and raises the cost more steeply than the same complexity would with asphalt.
It is a visible architectural decision
Profile, orientation and finish change how the house reads from the street. On some properties that is the reason to choose metal; on others the roof needs to sit quietly and the choice narrows accordingly.
Trade-off: harder to reverse than a colour choice in shingles.
It helps to know, ahead of an estimate, roughly how long you plan to keep the house, how complex the roof is, and what you want it to look like. Those three settle the decision faster than a materials comparison does.
Suitability
Metal roofing is a system decision, not just a material choice
Metal suits many GTA properties and not all of them. What determines it is the roof itself — its shape, its current condition and how water has to leave it — rather than a preference for the material.
The system
A metal roof is more than the panels you see
The visible metal is the outer layer of an assembly. The layers below give a general idea of what a metal roof involves — the exact roof assembly depends on the property and the roofing system selected.
Roof deck
The structural surface everything else is built on. Its condition affects what is possible above it.
Underlayment
A layer between the deck and the metal.
Metal roofing system
The panels and the way they are joined and fixed — the visible layer, and the one usually chosen first.
Flashing and transitions
Transitions such as walls, chimneys and changes in roof plane require careful detailing.
Ridges and edges
The perimeter and the ridge, where the roof meets the weather first.
Penetrations
Vents, pipes and skylights each pass through the roof surface and need to be detailed.
Drainage
How water and snow leave the roof, and where they go once they do.
Specification
The make-up of the assembly is set per property, once the roof has been assessed.
How a metal roofing project runs
From assessment to completion
A general outline of the stages a metal roofing project moves through.
Assessment
The stage where the roof, its structure and its details are reviewed to establish what the property can take.
System selection
Where the assembly and its appearance are decided for that specific roof.
Roof preparation
Bringing the deck and underlying layers to the condition the new system requires.
Metal roofing work
Installation of the panels across the roof planes.
Detailing
Flashings, edges, ridges and penetrations — the points that need the most careful work.
Completion
The stage where the finished roof is reviewed.
What affects the estimate
What a metal roof costs depends on the roof
There is no single square-foot figure that holds across properties. These are the variables that move a metal roofing estimate.
- Roof size — the total area to be covered
- Roof geometry — planes, pitch, hips, valleys and dormers
- Existing roof condition — what is found once the current covering is assessed
- Access — how the roof and the site can be reached
- Details and penetrations — chimneys, skylights, vents
- The metal roofing system selected
- Scope of preparation required before the new system goes on
Common questions
Metal roofing questions
Is metal roofing suitable for homes in Toronto?
Metal roofs are used on residential properties across Toronto and the GTA. Whether one suits a particular house depends on the roof itself — its shape, its current condition, how water and snow leave it, and how the material sits with the architecture. It is a property-by-property question rather than a general one.
Can a metal roof be installed on an existing home?
Metal roofing can be installed on many existing homes, but the existing roof and underlying structure need to be assessed first. The condition of the roof deck and the layers beneath the current covering determine what preparation is required.
How is metal roofing different from asphalt shingles?
They are different systems rather than different-looking versions of the same thing. They shed water and snow differently, they are detailed differently at edges and penetrations, they are usually chosen on different timescales, and they change the appearance of the house in different ways.
Direct performance comparisons — service life, ratings, energy figures — are not stated here without verification.
Does roof shape affect metal roofing installation?
Yes. Roof geometry can materially affect the complexity and the estimate. A simple roof with few planes is a different job from one with multiple hips, valleys, dormers and penetrations.
What affects the cost of a metal roof?
Roof size and geometry, the condition of the existing roof, access to the property, the number of details and penetrations, the metal roofing system selected, and how much preparation the roof needs before the new system goes on.
What should I consider before choosing a metal roof?
How long you expect to keep the roof, how you want the house to look, what the existing roof condition allows, and how complex the roof is to detail. Those four together usually settle the decision faster than a materials comparison does.
Service areas
Metal roofing across the GTA
Next step
Considering a metal roof?
Start with what your roof allows.