The GPU roof window lets you expand or transform upstairs space such as attics, above-garage bonus rooms and loft areas into beautiful living areas filled with daylight, outdoor views and fresh air. Designed to be installed within reach, the GPU roof window opens to provide maximum ventilation.
Modern skylights offer all the dependability, features and accessories available with vertical windows and in some cases more, for adjusting and controlling light, ventilation, and solar heat gain or loss.
- Timber core with moulded white polyurethane finish.
- Opens to a 45° angle to satisfy egress requirements for emergency escape (check local building code).
- Window rotates 180° and locks in place for easy cleaning of outer pane.
- Ventilation flap opens for limited ventilation.
- Optional insect screen available.
- Convenient handle at the bottom of the window.
Bottom latch 
Comfortable to operate and easy to access.
Ventilation flap 
Our unique ventilation flap keeps dust and insects out while letting fresh air in.
ENERGY STAR® 
The GDL roof window meets ENERGY STAR approval guidelines for energy efficiency in most climatic regions of Canada.
Uninterrupted view 
Experience a clear view with the top-hung GPL’s 45° opening angle.
Product details
ENERGY STAR®
The GPU roof window meets ENERGY STAR approval guidelines for energy efficiency in most climatic regions of Canada.
Emergency escape solution
The GPU top-hinged roof window opens to a 45° angle to provide ample ventilation and to satisfy egress requirements for emergency escape.
Easy cleaning
On the GPU roof window, the top sash rotates completely inward so that the glass can be easily cleaned from inside the room.
Convenient ventilation
When the GPU roof window is closed, a ventilation flap can be opened to provide a breath of fresh air ― even if it is raining outside.
Energy efficient glass for added safety and energy efficiency
The GPU roof window comes with laminated insulated glass only.
Sunscreening options for optimal light control
The GPU roof window is compatible with several manual sunscreening accessories including:
- Blackout blind - Complete light blocking
- Venetian blind - Accurate glare and light control
- Roller blind – Light diffusion
- Exterior awning charcoal net cloth – Reduces heat gain and glare
Optional insect screen
An optional insect screen is available.
Flashing options for a weathertight installation
A complete line of flashing systems help ensure a weathertight installation for your GPU roof window on most types of roofs:
- Shingles and shakes
- High profile roofing
Installation slope
The GPU roof window installs on roofs with slopes between 18.5° (4:12) and 55° (17:12).
Warranties you can trust
We stand behind our products with a promise of lasting service. Our warranty covers 20 years on insulated glass seal and 10 years on the skylight. For details, see our full Warranty.
Quality construction
The GPU roof window has a timber core with a moulded white polyurethane finish, and aluminum exterior cladding.
Streamlined exterior
The smooth, low-profile of the GPU roof window does not obstruct your roofline.
Available sizes
The GPU roof window comes in five different sizes. For details on these sizes, please download a copy of our roof window sizes and pricing from the top of the page. Due to local sales tax, transportation and delivery costs that may vary, please consult your local VELUX dealer for pricing.
Review: A roof window is really a skylight that is within hands reach and is used to look outside from, rather than being way overhead. That's why it's called a "window" rather than a skylight. Because it is meant to be looked through, the window is made to flip right over and allow the cleaning of the outside glass, from inside the house.
This GPU model can also open completely outwards, allowing the insect screening to be used with the skylight fully opened, therefore, giving much more ventilation (as opposed to its GGU counterpart). Also, because the hinge is at the very top of this window, the overall opening is large and more usable for a person to look out through. In fact, this unit is considered an egress window, allowing a person to exit through the window in case of emergency.
These roof windows are more expensive than regular skylights and require more installation time, but for a loft area, they offer viewing and usability that is far beyond what regular skylights can offer.
These are the units that we most often recommend to our clients who have a loft space.
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Deck Mounted Skylights
The ultimate daylighting experience, the GDL CABRIO™ balcony roof window opens to create a roof balcony, transforming unused attics or above-garage bonus rooms into extraordinary living space that embraces the best of the outdoors.
VELUX is emissions-free and all of the materials used in our manufacturing processes are non-hazardous. The wood used to make our skylights comes from 100 percent certified mills. All paint and finishing of our products are water-based for safer disposal and to reduce VOCs released into the environment.
- Window opens out to a small roof balcony.
- The CABRIO is easy and quick to close – in case it rains.
- Adds sophistication to your space with extra light and a stunning floor-to-ceiling view.
- Lower section comes with safety glass to reduce the risk of injury.
- Upper section has all the benefits of our standard GPL top-hung roof window.
- Can be used as an emergency exit.
- Natural pinewood with clear TopFinish.
A balcony in disguise 
When closed, the CABRIO looks like two roof windows joined together.
Instant balcony 
Integrated banister railings automatically appear when the lower window is opened.
ENERGY STAR® 
The GDL roof window meets ENERGY STAR approval guidelines for energy efficiency in most climatic regions of Canada.
The sky’s the limit 
Install multiple CABRIOs for even more sunshine and flowing space.
Product details
Emergency escape solution
The GDL balcony roof window opens to a 45° angle to provide ample ventilation and to satisfy egress requirements for emergency escape.
Exclusive dual sash operation
The top sash opens for maximum ventilation and also pivots inward for easy cleaning from inside the room. The bottom sash opens outward to create a roof balcony.
Convenient ventilation
When the GDL CABRIO roof window is closed, a ventilation flap can be opened to provide a breath of fresh air ― even if it is raining outside.
Energy efficient glass for added safety and energy efficiency
The GDL roof window comes with laminated insulated glass only.
Sunscreening options for optimal light control
The GDL balcony roof window is compatible with the following manual sunscreening accessories:
- Venetian Blind - Accurate glare and light control
- Blackout Blind- Total light blockage
- Roller Shade - Economical choice for light reduction
Optional insect screen
An optional insect screen is available.
Flashing Options For A Weathertight Installation
A complete line of flashing systems help ensure a weathertight installation for your GDL roof window on most types of roofs:
- Shingles/Shakes
- High Profile Roofing
Installation slope
The GDL balcony roof window installs on roofs with slopes between 35.25° (8 1/2:12) and 53° (15:12).
Warranties you can trust
We stand behind our products with a promise of lasting service. Our warranty covers 20 years on insulated glass seal and 10 years on the skylight.
Quality construction
The GDL CABRIO roof window comes with a select wood frame and sash coated with a clear finish, and aluminum or copper cladding.
Streamlined exterior
The smooth, low-profile of the GDL roof window does not obstruct your roofline.
Review: This is the grand lady of skylights. In fact, it's more than a skylight, it's a balcony. We have installed several of these units over the years and nothing else gives the same experience as this balcony skylight does. It is quite a bit larger than any other skylight system, and requires a fair bit of restructuring of the roof framework. Also, it is the most complex skylight on the market and requires a very experienced crew to install. This skylight provides such a spectacular atmosphere of a balcony up amongst the tree tops, that it usually becomes a big selling feature for a home.
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Project Daylight
The GGU roof window lets you expand or transform upstairs space such as attics, above-garage bonus rooms and loft areas into beautiful living areas filled with daylight, outdoor views and fresh air. Designed to be installed within reach, the GGU roof window opens to easily provide ventilation to any room and features a seamless, waterproof polyurethane finish.
Product details
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