VELUX FAQ for Skylights, Sun Tunnels, and more!
1. Do I have to create an account on SkylightsForLess.com in order to purchase something?
2. What is the difference between tempered and laminated glass?
3. Do I have to pay sales tax on my order?
4. What is a flashing system/flashing kit?
5. Do I need a flashing kit?
6. What is the warranty on VELUX products?
7. How do I find the serial number of my product?
8. How do I find replacement parts?
9. Are custom-sized skylights available?
10. How do I install a skylight or sun tunnel?
11. What is the difference between deck mounted and curb mounted skylights?
12. What is a pan-flashed skylight?
13. What is a fixed skylight?
Do I have to create an account on SkylightsForLess.com in order to purchase something?
No. Creating an account and registering for the site is optional. There are a variety of benefits to creating an account like reviewing order history, printing invoices, and placing new orders without having to retype everything.
What is the difference between tempered and laminated glass?
Laminated glass is a combination of two or more glass sheets with one or more interlayers of plastic (PVB) or resin. In case of breakage, the interlayer is designed to hold the fragments together. Tempered glass does not contain an interlayer to hold the fragments together. Instead, tempered glass is designed to break into small, pebble-like pieces. When tempered glass breaks, pieces of glass come loose and may strike an individual.
Do I have to pay sales tax on my order?
Only Pennsylvania residents are required to pay sales tax on their order and any additional shipping costs, if incurred.
What is a flashing system/flashing kit?
Flashing kits/systems are designed to shed water without relying on sealants that can break down over time. Boiled down: it's what keeps the rain out! View our flashing systems section for more details.
Do I need a flashing kit to install a skylight?
Yes, except for pan-flashed skylights. Note: skylights that do not utilize a properly-installed VELUX flashing kit do not quality for the No Leak Warranty. See our Warranty Information section for more details.
What is the warranty on VELUX products?
Warranty information can be found on our Warranty Information section.
How do I find the serial number of my product?
Every VELUX skylight and roof window features a data plate mounted on the frame. This dataplate contains the product serial number, which tells the skylight model, glass type and date of manufacture.
When ordering accessories for existing products or requesting product servicing, you should locate this number prior to contacting us. Doing so will help us provide you with the best service possible.
Tip: For the FS the plate is located at the bottom left frame, VS/VSE is at the bottom left sash. For QPF, FCM, VCM and VCE the information is stamped into the side of the exterior covers.
How do I find replacement parts?
We have an assortment of Velux parts and accessories for your next home improvement project. If our catalog does not contain a specific item that you are in the market for, please call us at 888-866-1149 or fill out a contact form. Our warehouse is filled with extra parts that can fit your skylight, sun tunnel, blind, or roof window.
View our parts and accessories section
for more information.
Are custom-sized skylights available?
Yes. Custom sizes for residential skylights are available for curb mounted fixed skylights (FCM) and deck mounted fixed skylights (VCM). Custom-sized commercial units may also be available depending on the size and glass. Please calls us at 888-866-1149 to get a quote for a custom-sized skylight.
How do I install a skylight or sun tunnel?
Installation instructions and technical details can also be found in our Installation section.
What is the difference between deck mounted and curb mounted skylights?
Deck mounted skylights are attached directly to the roof sheathing and attaches to the drywall that sits below. These are typically installed in slightly sloped roof pitch situations so the water will run around the skylight and not into the building. For a deck mounted skylight, the minimum pitch is 3:12 / 14 degrees or greater.
Curb mounted skylights sit on a 2x4 or 2x6 curb or raised frame when the roof pitch is lower or flat. The curb itself will channel water away from the skylight keeping the space below dry. The roof pitch for a curb mounted skylight is is 0:12 / 0 degrees to 20:12 / 60 degrees.
What is a pan-flashed skylight?
A pan-flashed skylight already has a flashing kit built-in. This differs from roof windows, curb mounted, and deck mounted units as they require a flashing kit [sold separately]. Visit our pan-flashed skylight section for more details.
What is a fixed skylight?
A fixed skylight can also be referred to as a non-venting skylight. The glass is stationary and does not open or close. In comparison, a venting skylight - manual, electric, or solar powered - will open to allow fresh air to enter and humidity to escape. View a full list of our fixed skylights for more details.