CV10K Cowl Vent Data Sheet (PDF, opens a new tab)
PDF · discovered on the published product page. File version and current applicability require confirmation.
Roof ventilation / Product information
A low profile cowl vent featuring a small cowl providing 10,000mm 2 ventilation area.
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.

Published product information
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
Roof pitches over 20°
Full installation details are available on request from the Technical Department.
Tile Cowl Vent Technical Data
| Tile Vent | Ventilation Area | Airflow Resistance | Roof Pitches | Water Resistance |
|---|---|---|---|---|
| CV10K | 10 000mm2 | N/A | Over 20° | Exceeds all relevant parts of DoE Partners in Technology Programme |
| CP10K | 10 000mm2 | 18.5 Pascals @ 30ltr/sec | Over 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
PDF · discovered on the published product page. File version and current applicability require confirmation.
PDF · discovered on the published product page. File version and current applicability require confirmation.
Linked in the published catalogue

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Keep this product context with your enquiry and let Ariel confirm the next step.
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) ↗