Need a bespoke size flat roof skylight?
We've got you covered - please check our instant price calculator!
Skylight Fitting and Setup Recommendations
Measuring for Installation
The specified size refers to the internal dimensions of the skylight.
When preparing the structural opening, measure from upstand to upstand, adding 10 mm to both the width and length.
This allowance of 10mm ensures the skylight fits properly within the opening.
For example, a 1000 x 2000 mm skylight requires a structural opening of 1010 x 2010 mm.
Upstand Construction Tips
Construct the upstand using 4 x 2 inch timber for the framework. Add 2 x 1 inch or 2 x 2 inch timber battens on the interior to support the bottom pane of glass.
Pitch and Water Drainage
Ensure the upstand has a minimum 6-degree pitch, ideally on the shorter side, to prevent water pooling. This typically translates to a 10 cm elevation per linear meter of skylight. Adjust accordingly if the skylight is pitched along the longer side—for instance, 20 cm for a 2000 mm length.
Weight Distribution and Sealing
- Place a foam rope along the top of the timber batten to smooth out any uneven surfaces and distribute the skylight's weight evenly.
- Use a black weatherproof sealant along the upstand's surface where the skylight overhangs to ensure full sealing and protection against the elements.
Recommended Sealants:
- Only use silicone or polyurethane sealants for optimum performance and compatibility.
- Avoid using acrylic sealants as they may chemically react with the skylight's finish, potentially compromising the unit’s seal.
These practices will help ensure a successful installation and long-lasting performance of your skylight.
Please note that your skylight is backed by a 25-year warranty only with the use of our recommended Structural Glazing Tape!!!
Product title
£19.99 | £24.99
Product title
£19.99 | £24.99
Product title
£19.99 | £24.99
Product title
£19.99 | £24.99
Let customers speak for us
Easy to order, super communication, delivered when specified. Recommended.
Fast delivery, quality product, good price
Easy to use at good price
Great information on website and easy to order. The product arrived when they said it would, more than happy with the product when it arrived. I spoke with the technical help for fitting advise and the guy was really helpful would recommend to other people and you again in the future if needed
The product was easily ordered, delivered to date expected and has been successfully installed. All in all a smooth service
I perched a triple glazed window the delivery was much quicker than expected witch was fantastic, the quality was also excellent I would definitely recommend this company
We`ve recently installed a 1500 x 1500 rooflight at a project in Wolverhampton. The rooflight appears to be good quality, it was competitively priced and delivered quickly. We will definitely use Skylight Factory for future projects.
Great service and arrived promptly was well packaged and looks great overall I will be using the skylight factory again on future projects.
Easy to install
Ordered 2 1000 x 2000 frameless skylight, easy transaction, fast delivery, great product, will definitely use again, thanks
It came very well packaged, delivered on time. No problem with the installation. We are very very with it.
Wonderfull service, great quality product which was received in the time what was given
Bought this Skylight for my dining area to improve the natural light into the open space of the kitchen/dining/living room, the change it has made to the room is amazing, we are very happy with the result, friends and family absolutely love this feature of the house.
Great product! Fast shipping and great customer service. High quality and easy to install with installation videos supplied. Will buy again.
We needed a skylight fast, and this company delivered within two days at the best price compared to others online. My only regret is not discovering them sooner. If I had known, I would have re-designed the roof to accommodate a larger skylight, as the cost difference for bigger glass is minimal.
