Metal roofing experts in Toronto
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Standing seam metal roof

standing seam metal roof

There are many people in Ontario having or considering standing seam metal roofs for residential and commercial properties. Let’s clear out the terms. Standing seam metal roof is called so because you can see the raised interlocking seam which attaches one panel to the nearest other. The most remarkable thing about standing seam is that the fastener is concealed, and there are no holes on the roofing panels. Such seam systems are typically used for metal roofing, or sometimes for metal walls (metal facades).

With the standing seam there is almost infinite variety of options for customers: one can choose the color, how long or how wide the panel should be, profile type, as well as shape, thickness and many other possibilities. What is more, there are many kinds of materials from which the profile is made: aluminum, copper, hot zinc coated steel. Below each material will be explained cost-wise as well as from the practical perspective.

Material options

Aluminum has become popular material for metal roofs in Toronto. On the plus side, aluminum roof does not rust and suits the properties located in the areas of mild weather with little chance of snow, ice or strong winds. On the down side, it is expensive and usually thin and bends easily under wind, then it never restores without braking to its initial form.

Aluminum standing seam
Aluminum standing seam

Copper roof is not only reliable, but also gives an elegant flair to the building. However the copper metal roofing is considerably more expensive than steel and aluminum, so the maintenance will turn rather costly.

We often use copper for curved standing seam profiles (mechanical lock). Copper is popular material for bay windows, cupolas, curved roofs, dorms and other types of metal roofs with difficult shapes.

Copper standing seam
Copper standing seam

Optimal material used for metal roofs is hot zinc coating steel. The material has enhanced rust protection, because Roof Experts use steel with minimum zinc amount of 275 g/sq.m or G90. It is world recognized standard for the outer steel constructions. That is why such roof is highly resistible to aggressive environment and extreme weather conditions.

Let’s dwell on the most demanded types of standing seam profiles and their usage.

Standing seam metal panel profiles

When we say “profile” we mean the shape and how panels are seamed together. Roof Experts will help you to decide which profile fits best for your building. The choice is based on such factors as the roof type and its pitch, architectural features, surroundings, weather conditions, and so on. There is a number of standing seam types which we will discuss further down.

Snap-lock / clicklock standing seam profiles

Details

There are many types of these profiles (for example trapezoidal standing seam), but basically, snap-lock is a profile that snaps down on one side.

Snap-lock standing seam profile
Snap-lock standing seam profile

Construction

The installers attach the panels to the plywood deck with the help of a clip which locks underneath the panel. When the panels are long (over 40 feet), then we use the float type of clip, which allows the roof metal to expand and contract. The best thing about snap-lock or clicklock standing seam system that it does not require manual or mechanical seaming.

Texture

  • Snap-lock profile can be flat, ribbed or striations (embossed)
  • Metal may have glossy or matt pain finishing

Benefits

  • Snap-lock roof systems perform best when the roof slope pitch which is no less than 3/12
  • Snap-lock standing seam panels are fast and easy to install, because no mechanical seaming is required

Dimensions

  • Metal has thickness 26-gauge (0.5 mm) or 24-gauge (0.7 mm)
  • Metal protected with hot-coated Zinc: G90 or 275 g/sq.m.

Nail strip/hem or fastener flange standing seam profile

Details

Nail strip Standing Seam profile
Nail strip Standing Seam profile

Nail strip standing seam panel system and a snap-lock panel system have a lot in common. They both suit better simple metal roofs. The difference is in the nature of connection.

Also it is worthwhile noting that for snap-lock and nail strip standing seam profiles we use hard steel which keeps shape of the panel. Usually we use matt (35 micron) or glossy (25 micron) polyester coated steel from local or European steel manufactures.

Construction

Nail strip standing seam does not use the clip to lock the panel. Instead, the panel is fastened right onto the deck. It is important that the fasteners are not fixed too tight and located in the center of the holes. Otherwise, the panels will not have opportunity for thermal expansion and might break off.

Texture

  • Nail strip profile can be flat, ribbed or striations (embossed)
  • Metal may have glossy or matt pain finishing

Benefits

  • Nail flange system is a popular choice for wide variety of building applications
  • Can withstand high wind loads
  • Clip-less design means easy installation as well as saving labor and money

Dimensions

  • Metal has thickness 26-gauge (0.5 mm) or 24-gauge (0.7 mm)
  • Metal protected with hot-coated Zinc: G90 or 275 g/sq.m.

Mechanical / classical standing seam lock profile

Details

Mechanical standing seam single lock profile
Mechanical standing seam single lock profile
Mechanical standing seam double lock profile
Mechanical standing seam double lock profile

Construction

Classical or mechanical standing seam lock is roll-formed. It is important that panels’ edges are aligned. The roll-forming process can be performed right at the working area with any length needed for the project.

Manually or mechanically, the installers bend the edges and fasten two panels together.

Texture

  • Nail strip profile can be flat, ribbed or striations (embossed)
  • Metal may have glossy or matt pain finishing

Benefits

Single Lock standing seam profile
(90-degree seam)
  • Standing seam panels are assembled by forming single folds
  • Suits regular environments
  • Unlike double lock profiles, single locked systems are easier to install
  • A damaged panel can be replaced with minimal effort
Double Lock standing seam profile
(180-degree seam)
  • Standing seam panels are assembled by forming two folds
  • Suits for roofs with low pitch, almost flat (up to 0.5/12) when architecture of the building requires vertical, horizontal and slope installation
  • Performs best at the areas of harsh climate, strong wind and heavy rain. The system allows thermal movement of the panels, while double lock prevents the seam from braking
  • Double lock panels are very reliable, but require more man-hours to install and are hard to change

Specification

  • Metal has thickness 26-gauge (0.5 mm) or 24-gauge (0.7 mm)
  • Metal protected with hot-coated Zinc: G90 or 275 g/sq.m.
Double lock standing seam
Double lock standing seam

For mechanical lock standing seam profiles on the simple roofs we can use regular steel from local suppliers. But we prefer to work and highly recommend our customers to chose GreenCoat PURAL FAP steel from recognized world leader in steel production industry – Swedish company SSAB. GreenCoat boasts excellent forming properties which help to reach the demanding folding. Thanks to these characteristics we can bend metal, make double lock standing seam and work with difficult roof elements such as chimneys, skylights, eyebrows, bay windows and etc. GreenCoat FAP performs well in rough conditions at workshops as well as on the roof and is workable at temperatures down to – 15°C. This means installation at lower costs during any season.

Colors

color standing seam

There is a big range of colors for standing seam profiles: from white to black. Below you can see the most popular colors for standing seam metal roof systems.

Stone Grey Standing seam
Mountain Grey Standing seam
Walnut Brown Standing Seam
Nordic Night Black Standing Seam

Price of standing seam metal roof system

Price of Standing Seam metal roof system

Price per square foot of standing seam metal roof system depends on:

  • type the profile: snap-lock or mechanical standing seam profile
  • type of metal for standing seam panels: steel, aluminum, copper or zinc
  • difficulty of the standing seam roof:
  • existence of valleys, skylights, eyebrows, chimneys, dormers etc.;
  • slope of standing seam roof;
  • rise of the standing seam roof: amount of the levels under the roof.

All these factors influence to the cost of standing seam roof. Average price for snap-lock standing seam roof starts from $8.00 per square foot. For mechanical standing seam profile price starts from $10 per square foot for material and labor.

Warranty

The warranty applies to metal supplied by Roof Experts on hot dipped galvanized steel, with minimum 275 g/sq.m. Zinc mass. For example, SSAB guarantees that the coating will not scale, crack or peel from the metal and that there will be no significant or uneven alterations in the color (moderate color alterations are possible and not covered by the guarantee). SSAB further guarantees that there shall be no perforation of the metal, as a result of oxidation, during 30-years counted from the start of the guarantee. When Roof Experts do installation of standing seam metal roofs, we provide warranty for 50 years for the roof system.

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