I'm considering getting solar panels installed on my roof, which is already 17 years old. One installation company mentioned they could install the panels but would only offer a 10-year penetration warranty. Another company strongly advised replacing the roof before installing solar. What are your thoughts on this? Also, is it a good idea to oversize the solar system by about 10-20% compared to our current energy consumption?
3 Answers
It's a smart move to replace your roof before going solar! I've been in the solar business for years, and it's always better to start with a fresh roof to avoid future headaches. If your roof has missing granules or signs of wear, replacing it now saves you from potential costly reinstallation of solar panels down the road. Plus, a new roof will actually extend the life of the solar panels since they'll help protect the area underneath.
Exactly! Also, don't forget to give your new roof some time to settle before installing solar—you'll want to ensure there's no risk of leaks.
For your energy needs, oversizing your solar system by 10-20% can be a great idea, especially if you're planning on adding more electric appliances down the line. Just be sure to check your local net metering rules, as they can affect how much compensation you'll get for any excess energy produced. Sometimes utilities cap systems, so knowing that upfront can help you make the best choice!
Thanks for the tip! I'll definitely ask about that when I consult with the utilities.
Good call! And if you're set on an EV or other heavy usage, it makes good financial sense to have that extra capacity.
Replacing the roof first is definitely the way to go. A 17-year-old roof is nearing the end of its lifespan, and you don’t want to be in a situation where you have to remove solar panels later to fix a leak. I've also found that if your roof isn't in good shape, installers usually shy away from taking responsibility for any leaks that might occur afterward. Installing a metal roof can be a great option as it lasts a lifetime and pairs well with solar since it has no penetrations.
I've heard that metal roofs can be expensive upfront, but they pay off in the long run. How much do they actually cost compared to asphalt?
That's true! They're generally more, but when you calculate the longevity and maintenance, it's worth it.
That makes sense! I definitely want to avoid any liability issues later.