Solar Roof Mounts: 5 Things You Need to Know

Solar roof mounts (also known as roof-mounted solar panel systems) are by far the most popular solar solution to high energy bills and are backed by deep discounts and 25-year warranties. However, your roof is very important, so you’ll want to know what a solar panel system means to you and your roof. Here are some common questions and answers to get you started.

1. What are the most important factors in determining if a roof is suitable for solar energy?

There are two really important requirements that your roof must meet. One has to do with the direction you face and your access to sunlight during the day. The other is the likelihood that your roof will outlast your solar roof assembly (30+ years). If your roof is not in good shape, now is the time to replace or repair it. Before installing, a professional solar consultant will inspect your roof and determine if your roof needs to be repaired or replaced and if it will be able to support the additional weight of the racks and solar panels (at least 4 pounds per square foot).

2. What types of roof are best for installing a solar roof bracket?

No type of roof will disqualify you from going solar. Solar installation companies have successfully installed solar roof mounts on metal, asphalt, shingle, slate, and gravel roofs. It is difficult to generalize about which type of roof is best because it varies by individual situation, building type, building height, weather, and seismic factors.

3. What are my options for a ceiling mount?

There are two basic types: weighted and penetrating. Ballasted panels, which are particularly suitable for flat roofs, are weighted onto your roof. In this way, they offer minimal disruption to the roof. Penetrating solar panel systems attach to your roof, making them more suitable for situations where wind or seismic conditions require more stability. Penetrating solar roof mounts can affect your roof warranty; ballasted usually won’t. A good solar consultant can lay out the pros and cons of each for your particular situation.

4. How much roof space will a solar panel system take up?

The size of your system largely depends on your energy usage, how much you intend to offset with solar, and how much space is available. An average residential system is typically between 400 and 700 square feet. However, smaller and more discreet systems are also possible (eg for a solar patio or a garage).

5. What qualifications must my solar installation company have?

As with all solar installations, your installer must be well established, registered with the BBB, and have all necessary licenses for electrical and solar work. Experience is a must, especially in roofing: Solar installers who have had experience as roofers can be counted on to treat your roof with care during installation.