The timing question
Solar panels last 25-30 years. Asphalt shingle roofs last 20-30 years. If you install solar on a 15-year-old roof, you will likely need to remove the panels, replace the roof, and reinstall the panels before the solar system reaches end of life. That removal and reinstallation costs $3,000-$8,000.
When to replace first
Replace your roof before solar if:
- Your roof is more than 15 years old
- Your roof is showing signs of wear (granule loss, curling, leaks)
- Your roofer recommends replacement within the next 5-10 years
- You want maximum warranty protection on both systems
When you can install solar on your existing roof
If your roof is less than 10 years old, in good condition, and made of durable material (tile, metal), you can confidently install solar without replacing the roof first.
The combined approach
DeHart Roofing coordinates roof replacement and solar installation as a single project. This saves on labor (scaffolding and setup happen once), ensures proper waterproofing around solar penetrations, and gives you one point of contact for the entire project.
Central Valley solar potential
With 260+ sunny days per year, the Central Valley is one of the best regions in America for solar energy production. A properly sized system can reduce or eliminate your electric bill. Combined with a new roof, it is one of the best investments you can make in your home.
Contact DeHart Roofing for a free roof evaluation before your solar installation.