Solar panels are an excellent investment that saves on electricity costs and reduces your carbon footprint. Kotikatto.fi installs solar panels during roof renovations or on existing roofs. This way you get everything from one reliable provider.
Why install panels during renovation?
Installing solar panels during a roof renovation is the most cost-effective approach. Scaffolding is already in place, the roof structure can be optimized for panels, and the new roof will safely support the panel weight throughout its entire lifecycle. You also save on the cost of a separate installation visit. Panel installation does not significantly delay the roof renovation.
Compatibility with roofing materials
| Roofing materialRecommended | Suitability | Mounting method |
|---|---|---|
| Metal roof | Excellent — lightweight and durable | Profile clamps |
| Standing seam | Best — no holes in the roof surface | Seam clamps |
| Tile roof | Good — tile integrity preserved | Batten clamps |
| Felt roof | Possible — special solutions needed | Weight load must be considered |
Benefits of solar panels
In Finland, solar panels produce electricity efficiently from spring to autumn. A 10 kWp system produces approximately 8,000–10,000 kWh per year. This covers a significant portion of a detached house's electricity needs. Excess electricity can be sold to the grid. The investment typically pays for itself in 8–12 years.
Solar panel pricing
A detached house solar panel system typically costs €5,000–15,000. Installation during a roof renovation is more affordable. You can receive a household deduction on installation work (up to €2,250/person). Request a quote that includes solar panels in your roof renovation offer.
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Content reviewed and verified
Updated: April 2026
