The Costa Blanca enjoys more than 300 days of sunshine a year and one of the highest solar radiation levels in Europe. Installing photovoltaic panels is one of the best investments a property owner in this region can make. But before fitting panels, the roof must be in perfect condition. A very common mistake is installing panels on a roof that will need repair within a few years, forcing the entire installation to be dismantled at great expense.
Technical assessment of the roof from a solar installation perspective: orientation, pitch, shadow-free usable area, current condition of the covering and structural load capacity. We produce a report with the usable surface area and estimated installable power. This step precedes any offer from the solar installer.
Solar panels add a load of 15–20 kg/m² to the roof, plus wind loads on the mounting structure. We assess whether the existing structure can handle this load and, if necessary, reinforce beams, purlins or specific anchor points. Correctly dimensioned reinforcement ensures safety throughout the installation's service life.
Before panel installation, any existing leaks, cracks or deteriorated areas must be repaired. We fully waterproof the roof so that the solar installation has a solid, watertight base. Fixing the roof first is always more economical than dismantling the panels afterwards.
We plan and execute the sealed penetrations for the cable runs from the panels to the inverter. All penetrations are waterproofed and protected against UV radiation. Correct planning of these penetrations avoids future leaks — one of the most common problems in amateur solar installations.
If the roof currently has no insulation, combining roof renovation with insulation before panel installation is the most cost-effective approach. We leave the roof fully ready: watertight, insulated and structurally prepared for the solar mounting system.
We coordinate directly with your solar panel installer to ensure every structural and waterproofing decision is compatible with their mounting system. We attend joint site visits and resolve any technical conflicts before work begins, saving time and avoiding costly errors.
Removing and reinstalling a full solar array to repair the roof underneath can cost more than the roof repair itself. Doing it right first time saves thousands of euros.
A structurally sound, correctly oriented and insulated roof allows panels to be positioned optimally, maximising yield and return on investment.
When the roof and solar preparation are handled by the same specialist, responsibility is clearly defined — no disputes between roofing and solar contractors.
Sunny days per year
Alicante is one of the sunniest regions in Europe, making solar investment extremely attractive.
Typical payback period
Combined roof preparation and solar installation can typically pay for itself within 5 to 7 years in this climate.
Panel service life
A properly prepared roof guarantees that panels can work undisturbed for their full 25-year lifespan.