5 Questions to Ask a Pro About Skylight Installation

A skylight is a great way to bring natural light into an otherwise dark space, but planning this project can feel a little daunting—after all, your roof will need to accommodate a new window. Poor installation can lead to leaks and water damage, but a qualified skylight installation pro will set your vision into motion. Discuss these questions with a professional to get on the same page before you begin.

1. What kind of roof do you have?

Your skylight installer will need to know about the roof type on your house. Skylights should be tailored to your specific roof. For example, a stick roof offers more customization options because the rafters are farther apart (although the installer may need to cut into them.) On the other hand, roof trusses are typically set at a standard 25-inch width. 

2. What is the material on your roof?

The roof material dictates two things: the installation method and the type of skylight. For example, for a metal roof, you’ll need to install a deck-mounted skylight (which is attached directly to the roof deck). Shingle roofing and tile roofing can support either deck-mounted or curb-mounted skylights (the latter is installed on a raised curb, which comes with a reduced risk of leaking). You’ll also need to check that the flashing and the window frame are made from materials that are compatible with your roof—otherwise, the skylight could leak. 

3. How tall is your house?

Discuss the height and pitch of your roof with your contractor. The pitch, in particular, can influence which type of skylight will work best. If your roof is steep or especially tall, your contractor will have to take special safety precautions that will add to the cost of the skylight installation.

4. What kind of skylight do you want?

There are several types of skylights—from a basic vented skylight that pops open like a regular window to a large ridge skylight that can transform your space into a sunroom. Beyond that, there are different skylight shapes and dimensions, types of shafts that direct the light, and various add-ons such as UV-blocking glaze. Custom designs are also an option. Whatever your vision, you’ll need to discuss it with a local skylight installation pro to assess your roof and provide an accurate quote. 

5. When would you like the work completed?

Skylight installation can take a day or several days, depending on the complexity of the job. As you book the service, consider that you’ll likely have to wait a few weeks for the materials. That’s because each skylight is customized to fit the roof and your design preferences. Discuss the timeline with your contractor so you know what to expect.