Roof Access Window
Roof Window Specialist
The GXL 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 GXL roof window opens to easily provide ventilation to any room and features a seamless, waterproof polyurethane finish.
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.
- Frame is pine wood, pre-painted white.
- Easy roof access for roof repairs, maintenance, emergency and Egress.
- Can be installed as left hinged or right hinged roof access and window.
- Locking device that keeps sash in open position and ventilation flap.
- Optional insect screen and blinds available.
- Also available in polyurethane or varnished pine. Call for pricing and ETA.
- Flashing and underlayment sold separately.
- Offered in Triple Pane for enhanced energy effeciency.
Our unique ventilation flap keeps dust and insects out while letting fresh air in.
The GDL roof window meets ENERGY STAR approval guidelines for energy efficiency in most climatic regions of Canada.
The GGL roof window meets ENERGY STAR approval guidelines for energy efficiency in most climatic regions of Canada.
On the GGL roof window, the window swivels 180° in its frame so that the glass can be safely and easily cleaned from inside the room.
When the GGU 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 GGU roof window comes with laminated insulated glass only.
Sunscreening options for optimal light control
The GGU 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 GGU roof window on most types of roofs:
- Shingles and shakes
- High profile roofing
The GGU 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
The GGU roof window has a timber core with a moulded white polyurethane finish, and aluminum exterior cladding.
The smooth, low-profile of the GGU roof window does not obstruct your roofline.
The GGU roof window comes available in three large sizes to maximize air circulation. 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.
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.
Since this roof window flips inward for its opening, it makes the insect screening options somewhat limited. For this reason, we often recommend the GPU roof windows as a better option for our clients (see GPU Pro's Advice).