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The four surfaces of the pyramid slope upwards at an equal angle, of approximately 30 degrees, to a central point. There are no structural framing members other than the base.
This type of skylight can be installed on all types of site built curbs, whether pre-existing or new. For additional weathertightness, ensure you use roofing membrane in addition to flashing system on the curb.
For typical residential application Vinyl Curb Mount (VCM / OVCM) are utilized for skylights less than 5 x 5 and aluminum thermally broken curb mount (ATCM) for larger models. Commercial applications typically utilize the aluminum thermally broken outside fastening (AOF) skylight.


The Columbia vinyl curb mounted skylight is designed to work on any height curb with a nominal 2 width.
Electric operating mechanism
- The OVCME skylight consists of concealed slim motor with attractive cover, control system and rain sensor that automatically closes your skylight during inclement weather.
- Easy to install electric system plugs into standard 110V outlet
Infrared remote control
- Your OVCME electric skylight opens and closes with the use of your included, easy to use remote control
- A remote can operate up to 4 electric skylights
Removable insect screen
- Pre installed with white aluminum frame to match vinyl base and light shaft
- Spring loaded pins allow for easy removal and installation
Wide range of glazing options in acrylic and polycarbonate
A. Acrylic
- Clear
- Bronze
- White
All above available in single, double, or triple glazed.
B. Polycarbonate
- Clear
- Bronze
- White
All above available in single, double, or triple glazed.
See Glazing section for additional information.
Suitable for all flat or sloped roof applications
- Acrylic Installs on flat or sloped roofs
- Polycarbonate Installs on flat or sloped roofs.
See Roof types and slopes section for additional information.
Standard sizes include a full range of models for homes designed with 16 and 24 on centre rafters or trusses.
See Why Skylights What Size section for additional information.
Any size skylight available
- Acrylic and polycarbonate available in 6 standard sizes from 16x16 to 48x48.
- Any custom size in acrylic or polycarbonate is also available. Example inside curb dimension 43 x 43.
Exterior frame finishes four standard colours
- Standard frame colour Rideau Brown
- Optional frame colours Black, White, Sandalwood
- Custom coloured frames also available
Large capacity four sided condensation channel
- Weep holes in all four corners to allow any condensation build up to drain to the outside roof
- Allows for multi directional installation of skylight. Direction must be specified when ordering.
- Eliminates water stains on your interior light shaft
Energy Star
- The OVCM skylight in different acrylic or polycarbonate glazing options meet Energy Star requirements in different Canadian climatic zones.
See Energy Star section for additional information.
Flashing system
- Flashing kits available for sloped applications only
- Suitable for shingles and other low profile roofing materials
- Use in conjunction with roofing membrane for superior seal
- Custom flashings are required for flat roofs and other roofing materials
Interior frame finish including drywall return
- White vinyl base frame matches interior light shaft
- Built in drywall return to provide easy and clean finishing
Warranty
- Comprehensive 10 year warranty on the skylight
See Warranty section for additional information.
The most popular residential venting curb mounted skylight. This model consists of a durable, weather resistant, extruded aluminum retaining frame and an extruded two piece fusion welded vinyl (PVC) sash and base frame. The vinyl frames are thermally broken, preventing the passage of cold air from the exterior to the interior light shaft.
The Columbia vinyl curb mounted skylight is designed to work on any height curb with a nominal 2 width.
Removable insect screen
- Pre installed with white aluminum frame to match vinyl base and light shaft.
- Spring loaded pins allow for easy removal and installation.
Operating mechanism
- The OVCM-P skylight is easily opened and closed manually with standard crank handle.
- The handle may be replaced with adaptor to use in conjunction with telescoping extension poles. Available in 4-6 and 6-10 lengths.
Wide range of glazing options in acrylic and polycarbonate
a.Acrylic
Clear
Bronze
White
All above available in single, double, or triple glazed.
b. Polycarbonate
Clear
Bronze
White
All above available in single, double, or triple glazed.
See Glazing section for additional information.
Suitable for all flat or sloped roof applications
- Acrylic Installs on flat or sloped roofs
- Polycarbonate Installs on flat or sloped roofs.
See Roof types and slopes section for additional information.
Standard sizes include a full range of models for homes designed with 16 and 24 on centre rafters or trusses.
See Why Skylights What Size section for additional information.
Any size skylight available
- Acrylic and polycarbonate available in 7 standard sizes from 16 x 16 to 48 x 48.
- Any custom size in acrylic or polycarbonate is also available. Example: inside curb dimension 43 x 43.
Exterior frame finishes four standard colours
- Standard frame colour Rideau Brown
- Optional frame colours Black, White, Sandalwood
- Custom coloured frames also available
Large capacity four sided condensation channel
- Weep holes in all four corners to allow any condensation build up to drain to the outside roof
- Allows for multi directional installation of skylight
- Eliminates water stains on your interior light shaft
Energy Star
- The VCM skylight in different glass or acrylic glazing options meets Energy Star requirements in different Canadian climactic zones.
See Energy Star section for additional information.
Flashing system
- Flashing kits available for sloped applications only
- Suitable for shingles and other low profile roofing materials
- Use in conjunction with roofing membrane for superior seal
- Custom flashings are required for flat roofs and other roofing materials
Interior frame finish including drywall return
- White vinyl base frame matches interior light shaft
- Built in drywall return to provide easy and clean finishing
Warranty
- Comprehensive 10 year warranty on the skylight
See Warranty section for additional information.

The Columbia vinyl curb mounted skylight is designed to work on any height curb with a nominal 2 width.
Wide range of glazing options in acrylic and polycarbonate
A. Acrylic
- Clear
- Bronze
- White
All above available in single, double, or triple glazed.
B. Polycarbonate
- Clear
- Bronze
- White
All above available in single, double, or triple glazed.
See Glazing section for additional information.
Suitable for all flat or sloped roof applications
- Acrylic Installs on flat or sloped roofs
- Polycarbonate Installs on flat or sloped roofs.
See Roof types and slopes section for additional information.
Standard sizes include a full range of models for homes designed with 16 and 24 on centre rafters or trusses.
See Why Skylights What Size section for additional information.
Any size skylight available
- Acrylic and polycarbonate available in 7 standard sizes from 16 x 16 to 56 x 56.
- Any custom size in acrylic also available. Example inside curb rough opening 37 x 37.
Exterior frame finishes four standard colours
- Standard frame colour Rideau Brown
- Optional frame colours Black, White, Sandalwood
- Custom coloured frames also available
Large capacity four sided condensation channel
- Weep holes in all four corners to allow any condensation build up to drain to the outside roof
- Allows for multi directional installation of skylight
- Eliminates water stains on your interior light shaft
Energy Star
- The VCM skylight in different glass or acrylic glazing options meets Energy Star requirements in different Canadian climactic zones.
See Energy Star section for additional information.
Flashing system
- Flashing kits available for sloped applications only
- Suitable for shingles and other low profile roofing materials
- Use in conjunction with roofing membrane for superior seal
- Custom flashings are required for flat roofs and other roofing materials
Interior frame finish including drywall return
- White vinyl base frame matches interior light shaft
- Built in drywall return to provide easy and clean finishing
Warranty
- Comprehensive 20 year warranty on insulated glass, and 10 years on the skylight
See Warranty section for additional information.