MECHANICAL LOCK STANDING SEAM

Mechanical Lock Standing Seam by MWI Metal Roofing & Siding is designed to provide the most long lasting and maintenance free metal roofing for your home or commercial building. Available in G90 Galvanized Steel, Galvalume, Aluminum, Copper and Zinc. Choose your material and colour, our standing seam installation experts will roll form your metal roof to the exact specifications. Because we manufacture your roof right on site, there is minimal risk of material damage, costly errors, and heavy delivery surcharges.

Dark Brown ML Standing Seam Orangeville ON
Dark Brown ML Standing Seam Orangeville ON

What is Standing Seam?

Standing seam is a type or profile of metal roofing that is roll formed out of continuous coils of sheet metal. Standing seam roofs are easy to spot because of their distinct raised vertical seams. Each panel should run continuously from the eave at the base of the roof up to the ridge. Properly installed panels should not overlap horizontally as this would compromise watertightness. Larger roofs require the panels to be roll formed on site because they are too long to fit onto a transport trailer. The seams on a standing seam roof are engaged in one of two ways; “Snap Lock” or “Mechanical Lock”.

Why is it Called Mechanical Lock?

Mechanical Lock refers to the method of engagement of one vertical panel to the adjacent vertical panel. Also known as mechanically seamed, this standing seam is designed so that the overlapping seams of each parallel panel are permanently folded over (using a small roll forming tool) and locked into place. Mechanical lock panels are watertight and perform exceptionally well even on roofs with a very low slope.

MECHANICAL LOCK FEATURES & BENEFITS

MECHANICAL LOCK STANDING SEAM PICTURES

Old Town Grey ML Standing Seam Port Carling
Iron Ore ML Standing Seam Muskoka ON
Silver ML Standing Seam Muskoka ON
Muskoka, Ontario Grey Standing Seam Metal Roof

MECHANICAL LOCK SPECIFICATIONS

Panel Gauge: 24Ga & 26Ga.

Panel Width: 12-24”

Seam Height: 1 15/32”

Panel Length: to Specification

Finish: SMP & PVDF Matte/Low Gloss

Materials: G90 Galvanized Steel, Galvalume, Aluminum, Copper, Zinc

Installation: Direct to Deck

Minimum Pitch: 1/12

SS150 Mechanical Lock Standing Seam Profile CAD

Mechanical Lock SMP Colours

SMP ASTM Data

PROPERTYSMP COATING TEST METHODSMP COATING SPECIFICATION
Dry Film ThicknessASTM D 1400-94
ASTM D 1005-95
0.75-1.85 Mil
0.90-1.15 Mil
Specular GlossASTM D 523-89 @ 60°20-35
Humidity ResistanceASTM D 2247
(100% relative humidity @ 95°)
Passes 1000 Hrs
Salt SprayASTM B 117
(5% salt spray @ 95°)
Passes 1000 Hrs with <5% #6 blisters
Acid Pollutant ResistanceASTM D 1308-87
(20% sulfuric acid 18hrs, 10% muriatic acid 15 minutes)
No effect
Graffiti ResistanceCleanability of Defaced Panels
(spray paint, pens, etc.)
No effect
Abrasion ResistanceASTM D 968-93
(to expose 5/32" of substrate)
25-40 Litres
Chalk ResistanceASTM D 4214
(Florida exposure @ 45° S)
Rating not < 8 @ 10 yrs.
Non Vertical Rating < 7 @ 10 yrs.
Colour RetentionASTM 2244 - Hunter Units
(Florida exposure @ 45° S)
Rating not < 5∆ Hunter Units @ 10 yrs
AdhesionASTM D 3359-95a
(Reverse impacted 1/16" crosshatched)
No adhesion loss
Pencil HardnessASTM D 3363H-2H (NCAA 11-12)
Reverse ImpactASTM D 2794-93
(3000 x inches of metal thickness)
Passes - No pick off with Scotch #610 tape
Flexibility T-BendASTM D 4145-83
(no crack, no pick-off)
2T-4T bends, no loss of adhesion
Film CureASTM D 5402
(>100 double MEK rubs)
Passes
Fire RatingE 84Fuel contributed zero, passes
WeatherometerD6695Passes 3000 Hrs
UV ExposureD4587Passes 1000 Hrs
Film Integrity40 Years Limited Warranty

Mechanical Lock PVDF Cool Roofing Colours

PVDF ASTM Data

PROPERTYPVDF COATING TEST METHODPVDF COATING SPECIFICATION
Dry Film ThicknessASTM D 1400-94
ASTM D 1005-95
0.75-1.85 Mil
0.90-1.15 Mil
Specular GlossASTM D 523-89 @ 60°20-35
Humidity ResistanceASTM D 2247
(100% relative humidity @ 95°)
Passes 2000 Hrs
Salt SprayASTM B 117
(5% salt spray @ 95°)
Passes 1000 Hrs with <5% #6 blisters
Acid Pollutant ResistanceASTM D 1308-87
(20% sulfuric acid 18hrs, 10% muriatic acid 15 minutes)
No effect
Graffiti ResistanceCleanability of Defaced Panels
(spray paint, pens, etc.)
No effect
Abrasion ResistanceASTM D 968-93
(to expose 5/32" of substrate)
100 Liters
Chalk ResistanceASTM D 4214
(Florida exposure @ 45° S)
Rating not < 8 @ 20 yrs.
Colour RetentionASTM 2244 - Hunter Units
(Florida exposure @ 45° S)
Rating not < 5∆ Hunter Units @ 20 yrs
AdhesionASTM D 3359-95a
(Reverse impacted 1/16" crosshatched)
No adhesion loss
Pencil HardnessASTM D 3363HB-2H
Reverse ImpactASTM D 2794-93
(3000 x inches of metal thickness)
No cracking or loss of adhesion
Flexibility T-BendASTM D 4145-83OT-3T bends, no loss of adhesion
MandrelASTM D 522-93A
(180 bend around 1/8" mandrel)
No cracking

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