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Roof ventilation / Product information

Interlocking and Plain Tile Cowl Vent (Small) CV10K/CP10K

A low profile cowl vent featuring a small cowl providing 10,000mm 2 ventilation area.

More about this product

The cowl incorporates barriers to prevent water ingress and block wind driven rain, allowing the water to drain away downslope. Ariel Plastics have a comprehensive range of tile cowl vents available to match most known plain and profiled tiles, with specials available on short lead times. A colour matching service ensures that even on a weathered roof the Corovent will blend discreetly with the existing tiles.

  • Incorporates barriers to prevent water ingress
  • Provides 10,000mm 2 of ventilation
  • CV10K features a large spigot for roof ventilation
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Plain Tile Cowl Vent
Plain Tile Cowl Vent · published Ariel image

Published product information

Detail & guidance

Incorporates barriers to prevent water ingress

Provides 10,000mm 2 of ventilation

CV10K features a large spigot for roof ventilation

CP10K features a pipe terminal for either 110mm or 125mm connections

Can be made to suit a wide range of tiles and slates (please check for availability)

Colour matching service available

One felt sleeve (FW1) is supplied with each unit

ideal for

Roof pitches over 20°

Full installation details are available on request from the Technical Department.

Tile Cowl Vent Technical Data

Published source data for Interlocking and Plain Tile Cowl Vent (Small) CV10K/CP10K · source data, technical review pending
Tile VentVentilation AreaAirflow ResistanceRoof PitchesWater Resistance
CV10K10 000mm2N/AOver 20°Exceeds all relevant parts of DoE Partners in Technology Programme
CP10K10 000mm218.5 Pascals @ 30ltr/secOver 20°Exceeds all relevant parts of DoE Partners in Technology Programme

Installation: Cowl or Roofline Vents for Tile Roof

Complete roofing to one course below the position for the tile vent.

Hold vent in position as centrally as possible between the rafters and mark where the vent spigot touches the underlay.

Cut underlay in a cross, fold up and back.

Insert felt weir, if using, under batten above opening, positioning it centrally above the hole.

Nail felt weir to the batten.

Nail felt over the battens.

Supporting resources

Documents for this range

Linked in the published catalogue

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Product & project support

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Source & review information

Content imported from Ariel’s published product information, captured 27 October 2026. Final technical/content approval is pending; current stock, delivery and warranty assurances are not asserted. Source reference (opens a new tab) ↗