SD20 Disc Vent Data Sheet (PDF, opens a new tab)
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Roof ventilation / Product information
Soffit Vent Disc SD20
Corovent Soffit Disc Vents ensure that adequate ventilation is provided to the inner roof area to minimise the risk of trapped moist air.
- Easy to retro fit during refurbishment
- Used with any soffit over 4mm thick
- Provides 2,000mm2 of ventilation
Published product information
Detail & guidance
Easy to retro fit during refurbishment
Used with any soffit over 4mm thick
Provides 2,000mm2 of ventilation
Incorporates an insect grill
ideal for
Traditional fascia and soffit boards
Full installation details are available on request from the Technical Department.
Installation
The first thing you need to do is find your rafters. That done, mark the points halfway between them. These will be the locations of your soffit vents. Mark them with a pencil.
Take your drill and find the proper bits for the particular vents. The hole saw should be smaller than the flanges of the vent, but still big enough to install the vent. Drill the holes on the marks you made earlier.
Now that you have the holes, push the round vents into them. You can use silicone, if you want, to make sure the flanges are holding properly. You can also use the silicone to fill any gaps. Now, screw the vents into the soffit.
Supporting resources
Documents for this range
Open
Linked in the published catalogue
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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) ↗