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Flat Roof Ventilators

​Allows ventilation up to 450 sq. Ft. Per unit

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Flat roof ventilators

Specifications and characteristics

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Low maintenance: No moving parts, no electricity and completely silent.

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Rodent Proof: Built-in galvanized wire mesh screen

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Storm Proof: Unique precision engineered deflector system

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Hurricane Rated: Withstanding wind and rain conditions of 180 km/h or 110 mph.

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Flashing: Available for all types of roofs.

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Construction: 24 & 26 gauge galvanized steel.

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Finish: Bake polyester powder coating,  interior and exterior with UV protection

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Warranty: Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion

Flat roof ventilators

Unlike the goss neck, the Maximum Ventilators are CSA approved. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./h (4 mph). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

Available Colours

Black
QC-8262
VW-6068

Regent Grey
QC-8730
VW-6082

Metro Brown
QC-8228
VW-6154

Maximum White

For more colours available, consult our charter

To know the prices and availability, find a distributor

​Our models

VMAX-102-12

Deflectors: 1
Base: 45 degree cant.
Height : 23 1/4 in.
Ventilation area: 100 to 150 ft2

VMAX-101-12

Deflectors: 4
Base: 45 degree cant.
Height : 24 1/2 in.
Ventilation area: 151 to 400 ft.2

VMAX-102-12-MB

Deflectors: 1
Base: insulated interior
Height : 24 1/4 in.
Ventilation area: 100 to 150 ft.2

VMAX-201-12-MB

Deflectors: 4
Base: insulated interior
Height : 24 1/2 in.
Ventilation area: 151 to 450 ft.2

You are a professional and want to know more about our products, visit our partners section

Buy our products from our many distributors

Accessories

Media filter

If snow infiltration is a problem. The Media Filter can be used in residential, commercial and industrial applications. A loss of ventilator efficiency of approximately 20% should be considered.

Bassin

Retention pan

Used in conjunction with the media filter. The polypropylene retention pan must be placed over the insulation to act as a second line of defence against infiltration.

Extensions

If your roof ventilator is not high enough. We have an extension from 12" to 72". Available Colours: Black, Brown, and Grey.

Architects

Are you looking for detailed specifications of exhaust fans and flaps for architects and construction professionals?

MODEL VMAX-102-12 

Deflectors: 1 Base: 45 degree cant. Height : 23 1/4 in. Ventilation area: 100 to 150 ft2
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

This model has been designed to be installed onto a wooden curb. The thickness of the wooden curb in conjunction with the thickness of the roofing membrane will determine the size of the ventilator required. The interior dimension of the wood curb should equal to the opening in the deck to allow for unobstructed air flow. The suggested roof area for one (1) ventilator model VMAX-102-12 has been calculated based on a 10 in. x 10 in. opening or (hole) of curb and roof deck.
Model : VMAX-102-12
Deflectors : 1
Net Free Evacuation : 96 in.2
Suggested Ventilation Area : 100 to 150 ft.2
Tested Extraction Rate : 134 CFM
Base Flashing : 45 degree cant flashing
Storm Proof : Unique precision engineered deflector system
Solid : Built of structural galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey, and white
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 102

MODEL VMAX-101-12

Deflectors: 4 Base: 45 degree cant. Height : 24 1/2 in. Ventilation area: 151 to 400 ft.2
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

This model has been designed to be installed onto a wooden curb. The thickness of the wooden curb in conjunction with the thickness of the roofing membrane will determine the size of the ventilator required. The interior dimension of the wood curb should equal to the opening in the deck to allow for unobstructed air flow. The suggested roof area for one (1) ventilator model VMAX-101-12 has been calculated based on a 10 in. x 10 in. opening or (hole) of curb and roof deck.
Model : VMAX-101-12
Deflectors : 4
Net Free Evacuation : 144 in2.
Tested Extraction Rate : 418 CFM
Suggested Ventilation Area : 151 to 400 ft2. (Refer to chart)
Base Flashing : 45 degree cant flashing
Storm Proof : Unique precision engineered deflector system
Solid : Built of structural galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey, and white
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 101

MODEL VMAX-102-12-MB

Deflectors: 1 Base: insulated interior Height : 24 1/4 in. Ventilation area: 100 to 150 ft.2
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

All in one, no need of a wood curb, this model has been designed to allow you to install the roofing membrane onto the base flashing the same way you would a wood curb. We have made an allowance for the membrane so that the neck of the ventilator will go over both the flashing and the membrane.
Model : VMAX-102-12-MB
Deflectors : 1
Net Free Evacuation : 96 in2.
Tested Extraction Rate : 134 CFM
Suggested Ventilation Area : 100 to 150 ft2.
Base Flashing : Flat base, insulated interior flashing
Storm Proof : Unique precision engineered deflector system
Solid : Built of structural galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey and white
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 102-MB

MODEL VMAX-201-12-MB

Deflectors: 4 Base: insulated interior Height : 24 1/2 in. Ventilation area: 151 to 450 ft.2
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

All in one, no need of a wood curb, this model has been designed to allow you to install the roofing membrane onto the base flashing the same way you would a wood curb. We have made an allowance for the membrane so that the neck of the ventilator will go over both the flashing and the membrane.
Model : VMAX-201-12-MB
Deflectors : 4
Net Free Evacuation : 121 in2.
Tested Extraction Rate : 351 CFM
Suggested Ventilation Area : 151 to 450 ft2. (Refer to chart above)
Base Flashing : Flat base with insulated interior
Storm Proof : Unique precision engineered deflector system
Solid : Built of structural galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey, and white
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 201-MB

ACCESSORIES - EXTENSIONS

EXTENSIONS

  • Special orders only. Manufacturing delays may vary depending on season.
  • Available Colours : Black, brown and grey.
  • Support Brackets are available for extensions three (3) feet and higher at a small premium.

A limited selection of special colours is available at a slight premium.

VMAX MODEL WALL STORM PROOF SOFFIT

The VMAX wall storm proof soffit is a unique soffit that has been specifically designed and manufactured to allow fresh air intake for attic air circulation while preventing any weather infiltrations into the attic space. Designed for flat or sloped roof applications, the wall mounted storm-proof soffit is a solution for any building with no roof edges. Due to its wall installation, this product offers the possibility of having a uniform and linear air intake entry around the perimeter of the building, thus promoting optimal attic ventilation.
Factory made, 24 and 26 gauge galvanized structural steel construction.
Available in 8′ long sections.
Built-in 1/8in (3.175mm) galvanized steel wire mesh.
Perforations : 0.1875 po.
Left and right end caps offered separately.
Prewashed with a phosphate treatement and then coated with an interior and exterior baked polyester powder paint with UV protection.
Standard colours: black and white
RAL colour chart also available.
Special colours: please refer to our colour chart for more information.
Five (5) years on paint and corrosion, lifetime warranty on any manufacturing defects.
Norms and certifications : CSA, CAN-3-A930M82, ASTM-527

DIMENSIONS AND SPECIAL CHARACTERISTICS – WALL STORM PROOF SOFFIT

DIMENSIONS AND SPECIAL CHARACTERISTICS – CATHEDRAL SYSTEM