Home > Companies > Manthorpe Building Products Ltd > Slate Ventilator Range

Manufactured from injection moulded polypropylene and designed for roof ventilation in both new build and refurbishment applications.

The products can also be used as outlet terminals for extraction fans and soil pipe ventilation when used in conjunction with Manthorpe GRPA Flexible pipes.

Options

Product reference:

- GILSV25-20 Small Format In-Line Slate Vent:

  • Discreet, unobtrusive design.
  • Suitable down to 22.5° roof pitch (30° with 400 x 200 mm slates).
  • For use with 500 x 250 mm format slates.
  • Can be used with smaller 400 x 200 mm slates.
  • Wind tunnel tested at the BRE.
  • Built in spigot, no need for an adaptor.
  • Protective edge skirt improves weatherproofing.
  • 6000 mm²/M of free vent area per unit.

- GILSV30-25 In-Line Slate Vent:

  • Discreet, unobtrusive design.
  • Suitable down to 22.5° roof pitch.
  • For use with 600 x 300 mm format slates.
  • Can be used with smaller 500 x 250 mm slates.
  • Wind tunnel tested at the BRE.
  • Built in spigot, no need for an adaptor.
  • Protective edge skirt improves weatherproofing.
  • 8800 mm²/m of free vent area per unit.

- GRSV30/25R Refurbishment Slate Vent:

  • Designed for retro fitting without the requirement to cut slate battens for use with 600 x 300 mm slates, but can be trimmed to fit 500 x 250 mm slates using pre-marked cutting lines.
  • Suitable for high and low level ventilation applications to provide 10 000 mm²/m free airflow.
  • Available finished in black with a light texture surface.
  • The hood is fitted with a 4 mm fly screen.
  • The GVSV30/25R has been extensively wind tunnel tested to BS 6367 Deluge test 225 mm/hr rainfall and driving rain test down to a roof pitch of 15º with an up roof wind speed of 13 m/s and a rainfall rate of 200 mm/hr to generate a fine, penetrative spray.

- GRSV30/25 Slate Vent:

  • Designed for use with as standard with 600 x 300 mm slates, but can be trimmed to fit 500 x 250 mm slates using pre-marked cutting lines.
  • Suitable for high and low level ventilation applications and designed to provide 10 000 mm²/m free airflow.
  • Available finished in black with a light texture surface.
  • The hood is fitted with a 4 mm fly screen.
  • It can also be used as an outlet terminal for extraction fans and soil pipe ventilation when used in conjunction with a GRPA Flexible Pipe.
  • The GRSV30/25 has been extensively wind tunnel tested to BS 6367 Deluge test 225 mm/hr rainfall and driving rain test down to a roof pitch of 15° with an up roof wind speed of 13 m/s and a rainfall rate of 200 mm/hr to generate a fine, penetrative spray.

- GRSV45 Slate Vent:

  • Designed for use with random slates with a base size of 600 x 450 mm for high and low level ventilation applications.
  • Units are designed to provide 10 000 mm²/m free airflow and are available finished in black with a light texture surface.
  • The hood is fitted with a 4 mm fly screen.
  • It can be used as an outlet terminal for extraction fans and soil pipe ventilation when used in conjunction with a GRPA Flexible Pipe.
  • The GRSV45 has been extensively wind tunnel tested to BS 6367 Deluge test 225 mm/hr rainfall and driving rain test down to a roof pitch of 15° with an up roof wind speed of 13 m/s and a rainfall rate of 200 mm/hr to generate a fine, penetrative spray.

- GRSV45R Refurbishment Slate Vent:

  • Designed for retro-fitting without the requirement to cut slate battens.
  • Manufactured as standard for 600 x 450 mm slates, but can be trimmed to fit 500 x 250 mm slates using pre-marked cutting lines.
  • Suitable for high and low level ventilation applications and designed to provide 10 000 mm²/m free airflow.
  • Available finished in black with a light texture surface.
  • The hood is fitted with a 4 mm fly screen.

Flexible pipe connector:

- Type GRPA:

  • A 455 mm long polyethylene flexible pipe designed for coupling directly to the slate vent oval spigot GRSV30/25 or GRSV45.
  • Can be trimmed to suit other terminal types with a 110 mm diameter connection.
  • The flexible pipe can be used to couple a soil pipe or mechanical extraction equipment and is supplied with metal screw clamp.
  • It allows 8000 mm² airflow.

- Type GRPA/1:

  • A 692 mm long polyethylene flexible pipe designed for coupling 4" ventilation products to 4" soil pipes or mechanical extraction equipment and is supplied with metal screw clamp.
  • It allows 8000 mm² airflow.

- Type GRPA/2:

  • A 800 mm long polyethylene flexible pipe version of the Type GRPA above.
  • It allows 8000 mm² airflow.

- Type GRPA/3:

  • A vacuum formed ABS flexible pipe reduction adaptor, designed for reducing 4" ducting and flexible pipes to make connection to 3" ventilation products.
  • It can be used in conjunction with the GRPA Flexible Pipe.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-20-75/375 Roof slope ventilator tiles
45-20-75/370 Roof slope terminals

Product specification

An important note about specifying

Manufacturer

Name:

Manthorpe Building Products Ltd

Tel:

+44 (0)1773 514200

Product reference

[GILSV25-20]
[GILSV30-25]
[GRSV30/25]
[GRSV30/25R]
[GRSV45]
[GRSV45R]

Accessories

 - Flexible pipe connector:
[Not required]
[GRPA]
-
For when used as a roof slope terminal (Clause 850).
 

Manufacturer details

Manthorpe House,
Brittain Drive,
Codnor Gate Business Park,
Ripley,
Derbyshire, DE5 3ND
Tel +44 (0)1773 514200
Fax +44 (0)1773 514261
NBS Plus