Solar panels can remain on a roof for decades, so the condition of the roof should be considered before installation. Installing panels on a roof that is already approaching the end of its useful life can create unnecessary future costs.
What should be checked?
- Age of the roof
- Roof covering condition
- Broken or damaged tiles
- Leaks
- Structural concerns
- Previous repairs
- Roof access
- Expected remaining roof life
Can solar panels go on an old roof?
Age alone does not determine suitability. An older roof in good condition may still be suitable, while a relatively newer roof with defects may require attention before installation.
When should the roof be replaced first?
If major roof repairs or replacement are already expected, completing that work before solar installation can avoid the need to remove and reinstall the panels later.
Think about the full system lifetime
Solar panels can operate for decades. The roof underneath them should be assessed with a similar long-term perspective.
Check your roof before going solar
We can identify roof-related considerations that may affect the solar installation design.
Book a Solar AssessmentFrequently asked questions
Can I install solar panels on an old roof?
Potentially. Roof age is only one factor. Condition, structure, covering and expected remaining life should also be considered.
Should I replace my roof before solar panels?
If the roof is likely to require major work soon, replacing or repairing it first can avoid removing the solar system later.
Can solar panels damage a roof?
A properly designed and installed mounting system should be appropriate for the roof construction and covering.
Rachel Whitmore
Residential Solar Consultant at BrightGrid Energy


