Should You Replace Your Roof Before Installing Solar Panels?
Earthlight Technologies • November 9, 2026
Should You Replace Your Roof Before Installing Solar Panels?
If your roof is getting older, you might be wondering whether to replace it now or go solar first. Homeowners in Connecticut and Massachusetts ask us this all the time, and our answer is usually straightforward: if your roof is near the end of its life, replace it before your solar panels go up.
Why Roof Age Matters for Solar
A solar system is a long-term investment, and it should sit on a roof that will last as long as the panels do. Installing solar on a roof that should have been replaced can lead to leaks, and that is something we work hard to avoid. It also means you will likely pay for a panel removal and reinstall in just a few years when the roof finally gives out. Removal and reinstall currently averages about $300 to $350 per panel, so on a full system that cost adds up quickly.
How Earthlight Grades Your Roof
When an Earthlight site technician visits your home, they assign your roof a grade. That grade translates to roughly how many years of life your roof has left. It is one of the most helpful parts of the visit, because it turns a guess into a clear recommendation. If your roof receives a low grade, such as a D, it usually makes more sense to replace it now than to install solar and pay to remove the panels a couple of years later.
Roof and Solar as One Package
Because Earthlight has its own roofing division, you do not have to juggle two contractors. Your new roof can be included in your financing, so the roof and the solar system are handled as one package. One team plans the schedule, one company stands behind the work, and your panels go onto a roof built to last.
Not every system has to go on the house, either. Every Earthlight system goes through engineering and design before installation, and depending on your property, panels can be placed on a barn, garage, pergola, or the ground. Learn more about ground-mounted versus roof-mounted solar.
Frequently Asked Questions About Roofing and Solar
Should I replace my roof first or get solar first?
If your roof is older, replace it first. Putting solar on a roof near the end of its life risks leaks and usually means paying for a panel removal and reinstall a few years later. During your site visit, an Earthlight technician grades your roof so you know roughly how many years it has left before you decide.
Can I finance a new roof and solar panels together?
Yes. Earthlight has a roofing division, so your new roof can be included in your solar financing. The roof and solar system are handled as one package by one company, which keeps scheduling simple and avoids coordinating separate contractors. Your Solar Energy Consultant can walk you through the financing options that fit your situation.
Is there a minimum roof size for solar panels?
There is no single minimum size. What matters is that the system fits within your town’s required setbacks from the roof edges and that your roof can handle the weight of the solar system. Every Earthlight system goes through engineering and design before installation, so we confirm both during the design process.
Can solar panels go on a barn, garage, pergola, or the ground?
Yes, any of those can work. Every solar system goes through engineering and design before it is installed, so our team can evaluate a barn, detached garage, pergola, or ground mount on your property. If your house roof is not a good fit, one of these options may give you the production you need.
How does adding an EV, heat pump, or home addition change the size of system I need?
Anything that adds load to your home’s electrical system means you will want more solar. If you tell us during design that you plan to buy an EV or add mini splits, ducted heat pumps, or air conditioning, we size your system to account for that future use. An existing system will not change size on its own, so plan ahead when you can.
Thinking about a new roof and solar? Schedule a site visit and our team will grade your roof and recommend the right order for your project. You can also explore residential solar from Earthlight.
