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Airtrak MV Mansard Ventilators

Nicholson STS

Range of mansard ventilators for slate and tile roofing is used to introduce ventilation into a flat roof where it falls out onto a pitched roof.

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+44 (0) 1763 295828 www.nicholsonsts.com
Application

  • Suitable for use at the junction of a slated roof with metal, membrane or liquid roof coverings.
  • E Version: For increased resistance to both wind uplift in exposed locations and corrosion in coastal locations, the ventilator can be supplied in 1.0 mm-thick, 316 grade stainless steel. Where extreme weather conditions are likely, consideration should be given to providing more weathering cover to upstands and slating or tiling to improve the integrity of the detail.
  • FR Version: To reduce spread of fire through ventilation apertures, the ventilator can be supplied with an intumescent seal.

Note: Standard Airtrak details assume moderate weather conditions. Small amounts of moisture may be admitted under heavy storm conditions. Where more severe weather conditions are likely, consideration should be given to increasing the vertical overlap dimension to upstands and to slating or tiling to improve the integrity of the weathering detail. For slate and tile details the manufacturer also recommends the use of the Airtrak LPS where appropriate. Contact manufacturer for further technical help.

Description

Range of mansard ventilators for slate and tile roofing is used to introduce ventilation at the point where the flat roof falls out onto a pitched roof. This is predominately used to ventilate the flat roof area but can also be used to provide ventilation to the head of the slate or tile roof at the same time.

Features and benefits:

  • The stainless steel profile is covered by the flat roofing material or flashing.
  • Combined with a Airtrak LPS low pitch soaker to maintain the integrity of the detail as the pitch reduces, selection guide below.
  • Can be combined with Airtrak CF ClipFast clips where it is possible that the flashing might slip off the ventilator over time and the welt disengage from the lower edge.
  • Supplied pre-bent to a specified angle.

Applications:

  • Suitable for use at the junction of a slated roof with metal, membrane or liquid roof coverings.
  • E Version: For increased resistance to both wind uplift in exposed locations and corrosion in coastal locations, the ventilator can be supplied in 1.0 mm-thick, 316 grade stainless steel. Where extreme weather conditions are likely, consideration should be given to providing more weathering cover to upstands and slating or tiling to improve the integrity of the detail.
  • FR Version: To reduce spread of fire through ventilation apertures, the ventilator can be supplied with an intumescent seal.

Note: Standard Airtrak details assume moderate weather conditions. Small amounts of moisture may be admitted under heavy storm conditions. Where more severe weather conditions are likely, consideration should be given to increasing the vertical overlap dimension to upstands and to slating or tiling to improve the integrity of the weathering detail. For slate and tile details the manufacturer also recommends the use of the Airtrak LPS where appropriate. Contact manufacturer for further technical help.

Product selection guide:

- Tiled roof applications:

  • 60-90° roof pitch: MV150.
  • 45-59° roof pitch: MV200.
  • 35-44° roof pitch: MV200 + LPS150.
  • 30-34° roof pitch: MV225 + LPS150.

- Slated roof applications:

  • 60-90° roof pitch: MV150.
  • 45-59° roof pitch: MV200.
  • 35-44° roof pitch: MV200 + LPS225.
  • 25-34° roof pitch: MV225 + LPS225.

Installation:

Consult manufacturer's literature for details.

General information
Material

Insect mesh: Vinyl-coated glass-reinforced plastic (GRP)

Uniclass 2015
Strip ventilators (Pr_30_59_29_82)Primary
Specification data - Strip ventilators
Product Reference

Airtrak MV150 Mansard Ventilator, pitch

Standard. Refer to product selection guide and insert pitch requirement.

Airtrak MV150-E Mansard Ventilator, pitch

Increased exposure. Refer to product selection guide and insert pitch requirement.

Airtrak MV150-FR Mansard Ventilator, pitch

Fire resistant. Refer to product selection guide and insert pitch requirement.

Airtrak MV200 Mansard Ventilator, pitch

Standard. Refer to product selection guide and insert pitch requirement.

Airtrak MV200-E Mansard Ventilator, pitch

Increased exposure. Refer to product selection guide and insert pitch requirement.

Airtrak MV200-FR Mansard Ventilator, pitch

Fire resistant. Refer to product selection guide and insert pitch requirement.

Airtrak MV225 Mansard Ventilator, pitch

Standard. Refer to product selection guide and insert pitch requirement.

Airtrak MV225-E Mansard Ventilator, pitch

Increased exposure. Refer to product selection guide and insert pitch requirement.

Airtrak MV225-FR Mansard Ventilator, pitch

Fire resistant. Refer to product selection guide and insert pitch requirement.

Airtrak LPS Low Pitch Soaker

Not required

Airtrak LPS150 Low pitch soaker for tiled roofs

Not available with Airtrak MV150.

Airtrak LPS225 Low pitch soaker for slated roofs

Not available with Airtrak MV150.

Airtrak CF ClipFast fixing clips

Not required

Airtrak CF ClipFast clips, stainless steel

Airtrak CF ClipFast clips, copper

Standard product features

Material:

Insect mesh: Vinyl-coated glass-reinforced plastic (GRP).

Length:

1000 mm.

Ventilation:

25 mm continuous ventilation aperture.

Product Options

Product reference:

- Airtrak MV150/ Airtrak MV150-FR:

  • Material: 0.7 mm-thick 304 grade stainless steel.
  • Cover to roof pitch: 150 mm.
  • Overall width: 180 mm.
  • Safe to use with other metals (lead, copper, zinc) under normal inland (non-marine) conditions.

- Airtrak MV150-E:

  • Material: 1.0 mm-thick 316 grade stainless steel.
  • Cover to roof pitch: 150 mm.
  • Overall width: 100 mm.
  • Increased resistance to chemical corrosion and marine environments.
  • Safe to use with other metals (lead, copper, zinc) in coastal environments.

- Airtrak MV200/ Airtrak MV200-FR:

  • Material: 0.7 mm-thick 304 grade stainless steel.
  • Cover to roof pitch: 200 mm.
  • Overall width: 240 mm.
  • Safe to use with other metals (lead, copper, zinc) under normal inland (non-marine) conditions.

- Airtrak MV200-E:

  • Material: 1.0 mm-thick 316 grade stainless steel.
  • Cover to roof pitch: 200 mm.
  • Overall width: 240 mm.
  • Increased resistance to chemical corrosion and marine environments.
  • Safe to use with other metals (lead, copper, zinc) in coastal environments.

- Airtrak MV225/ Airtrak MV225-FR:

  • Material: 0.7 mm-thick 304 grade stainless steel.
  • Cover to roof pitch: 225 mm.
  • Overall width: 275 mm.
  • Safe to use with other metals (lead, copper, zinc) under normal inland (non-marine) conditions.

- Airtrak MV225-E:

  • Material: 1.0 mm-thick 316 grade stainless steel.
  • Cover to roof pitch: 225 mm.
  • Overall width: 275 mm.
  • Increased resistance to chemical corrosion and marine environments.
  • Safe to use with other metals (lead, copper, zinc) in coastal environments.

Intumescent seal (Airtrak MV150-FR/ MV200-FR/ MV225-FR only):

  • Size: 4 x 30 x 1000 mm.
  • External finish: Foil wrapped for moisture protection.
  • Activation: 180–200°C.
  • Expansion ratio: 30:1.

Airtrak LPS Low Pitch Soaker:

  • Material: 0.5 mm-thick aluminium.
  • Overall width: LPS150: 175 mm; LPS225: 250 mm.
  • Overall length: 1000 mm.

Airtrak CF ClipFast fixing clips:

Fixing clip for securing lead flashings to the Airtrak ventilators to prevent flashing creep over time. Clips locate in the slots found in the lower edge of the ventilator; these slots are spaced at approximately 330 mm centres.

  • Length (overall): 70 mm.
  • Width (overall): 60 mm.
  • Thickness: Copper: 0.5 mm; stainless steel: 0.6 mm.

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