How Does Roof Age Affect Solar System Installation in Arcadia?

Solar panels usually come with warranties lasting 25 to 30 years, so your roof should last at least that long. Most experts suggest having at least 10 to 15 years of roof life left before a solar system installation in Arcadia. If your roof is less than 10 years old and in good shape, you can likely go ahead with solar. If your roof is older or shows signs of wear, it’s often best to replace it first. Getting a roof inspection before signing a solar contract will give you the most accurate answer.

Does Roof Age Matter for Solar Installation in Arcadia?

Yes, it matters. Solar panels often last longer than the roof they sit on. If you need to replace your roof later, you’ll have to remove the panels, replace the roof, and then put the panels back. If your roof and panels have similar lifespans, you can avoid this extra step.

Your roof is the base for your solar system. While the age of your roof is a good starting point, what really matters is how many years it can stay strong and leak-free under the panels.

What Roof Age Is Too Old for Solar Panels?

Recommendations differ because roofs wear out at different speeds. EnergySage suggests replacing asphalt roofs if they’re over 10 years old. ConsumerAffairs recommends replacement at 15 to 20 years, while Citadel Roofing & Solar says most roofs under 15 years are good for solar. Here’s the usual advice for asphalt shingles:

Roof Age	Typical Guidance	Next Step
Under 10 years	Good candidate	Quick inspection
10–15 years	Often suitable if well maintained	Written remaining-life estimate
15–20 years	Strong replacement candidate	Compare re-roofing first with bundling
Over 20 years	Replacement recommended	Re-roof before or alongside solar

How Roof Material Changes the Answer: Asphalt, Tile, Metal and Flat Roofs

The type of roofing material affects both how long your roof lasts and how solar panels are installed. Here’s how the four most common roof types compare:

Material	Typical Lifespan	Solar Considerations
Asphalt Shingle	15–30 years	Inspect and consider replacement after 15 years
Concrete or Clay Tile	50+ years	Calls for careful mounting and underlayment lasts 20–30 years
Standing Seam Metal	40–70 years	Panels attach directly to the seams
Flat or Low-Slope	20–30 years	Added racking sets the panel angle

Why an Aging Roof Complicates Solar Installation

An older roof can impact four main parts of your solar project:

Structural Load and Roof Deck Condition

Solar panels and their mounting equipment add about 3 to 4 pounds per square foot, according to Greentech Renewables. Installers will check your rafters and roof deck first, and older framing might need extra support to handle the weight.

Leaks at Mounting Points and Flashing

Most solar mounts go through the roof, and flashing is used to seal each opening. If the underlayment is worn or tiles are cracked, the seal can fail. Ask your installer who is responsible for leaks at the mounting points and how long they cover them.

Removal and Reinstallation Costs if You Re-Roof Later

ConsumerAffairs points out that if you need a new roof, you’ll have to remove and reinstall the solar panels. EnergySage estimates this can cost between $1,500 and $6,000. Replacing your roof before installing solar can help you avoid this extra expense.

Roof Warranty and Permit Considerations

Putting holes in your roof for solar can affect your current roofing warranty. Check the details with your roofer or shingle manufacturer. In Arcadia, you’ll need a building permit for rooftop solar, which is issued by the City’s Building Services Division.

How to Check Your Roof Before You Request Solar Quotes

Get ready for solar quotes by following these five steps:

1. Find the Roof’s Age and Material: Check permit records, purchase documents, or the roofing invoice.
2. Look for Warning Signs: From the ground, check for curling shingles, cracked tiles, sagging, or attic water stains.
3. Schedule a Roof Inspection: Ask a licensed roofer to review the covering, flashing, and underlayment.
4. Request a Structural Check: Ask the installer to confirm the framing and decking can support the array.
5. Get a Written Remaining-Life Estimate: A written figure helps you compare re-roofing now with installing solar first.

For your safety, let a trained professional handle any close-up roof inspections.

Roof First, Solar First or Both Together? How to Sequence the Projects

The best order for your projects depends on how much life your roof has left:

Option	Best When	Trade-Off
Replace the Roof First	Over 20 years old or under 10 years left	Later solar start
Install Solar Now	15+ years left and passes inspection	Possible removal cost later
Bundle Roof and Solar	About 10 to 15 years left	Higher upfront cost, aligned lifespans

If you put in solar panels before replacing your roof, it’s still possible to re-roof later. At Solar Unlimited, we handle removing and reinstalling panels for roofing work, and any installer can explain how this process works with your roofer.

Arcadia Roof and Permit Considerations

There are four local requirements you’ll need to follow in Arcadia:

• Online Permitting: Arcadia accepts applications through its EDGE portal and offers SolarAPP+ for qualifying home systems.
• Electrical Service: Arcadia permit records include solar-related main panel upgrades, and your installer can confirm whether you need one.
• Homeowners Association (HOA) Review: California’s Solar Rights Act limits HOA restrictions, though HOAs may still review panel placement.
• Fire Hazard Zones: Check CAL FIRE’s Fire Hazard Severity Zone viewer, since designated zones may carry added code requirements.

Checking these requirements early helps keep your permits on schedule.

Local Solar Experience in Arcadia

Solar Unlimited is a veteran-owned, family-run solar company located on West Live Oak Avenue in Arcadia. Since 1980, we’ve installed solar systems for homeowners and businesses throughout Greater Los Angeles and Ventura County.

For every residential solar project, we provide a site assessment, custom design, and help with permits. Our team also repairs and maintains all types of solar systems, for both homes and businesses, throughout the region.

Check the Roof Before You Sign

Your solar system will work best if your roof can last through the full warranty period. A roof inspection will help you decide whether to replace your roof first, do both projects together, or go ahead with solar now. When you’re ready, our team offers free site assessments for Arcadia homes. You can also learn more about how we handle solar installations, from your first consultation to the final setup.