How Solar Panels Work with Your Roof – What Homeowners in High Wycombe Should Know
Solar panels are becoming more and more popular across the UK. With rising energy bills and the push for greener living, many homeowners in High Wycombe, Beaconsfield, Gerrards Cross, and the Chalfonts are now thinking about adding solar panels to their homes.
But here’s the thing: before you put panels on your roof, you need to make sure your roof is ready. If the structure isn’t safe and solid, solar panels can end up costing you more in repairs later on.
“You wouldn't build a house on a weak foundation, so why put a 25-year investment on a roof that might fail in five? A solar-ready roof is a secure foundation for your green energy future.”
At Fix All Roofing, we’ve helped many local homeowners check and prepare their roofs for solar panel installations. Here’s what you need to know before going ahead.
Why Your Roof’s Condition Matters
Solar panels are designed to last 25 years or more. That means your roof needs to be strong enough to last just as long. If your roof has hidden issues, installing panels on top of it can make things worse.
Extra Weight
Solar panels add about 20 kg per square metre. Most modern roofs can handle this, but older roofs may need checking. Things that affect strength include:
- The age and type of roof trusses.
- Condition of tiles or slates.
- Any signs of leaks, rot, or water damage.
👉 If your roof is over 15–20 years old, it’s worth getting a roof survey before fitting panels.
Roof Direction and Pitch
Panels work best on south-facing roofs with a pitch of around 30–40°. East- and west-facing roofs can still work, but efficiency may be lower.
Different Roof Types and Solar Panels
Not every roof is the same. Here’s how solar panels can work with the most common roof types in Buckinghamshire:
- Tiled Roofs (clay or concrete): Brackets can be fitted under tiles. Any cracked or loose tiles should be replaced first.
- Flat Roofs: Panels can be tilted with a frame, but extra care is needed to stop leaks and withstand wind.
- Slate Roofs: Slate is brittle, so fitting panels needs a skilled roofer to avoid cracks and water ingress.
- Metal Roofs: Often used on barns or commercial buildings. Panels can be clamped on without drilling through the roof.
Issues to Fix Before Adding Solar Panels
Before panels are fitted, your roofer should check for common problems such as:
- Leaks – Cracked tiles or damaged flashing need repairing first.
- Rotting or Sagging Timber – Weak trusses may not take the extra weight.
- Loose Tiles or Slates – These can be a hazard and reduce panel efficiency.
- Poor Insulation or Ventilation – This is a good time to upgrade underfelt or membranes.
How Fix All Roofing Helps
We don’t install solar panels ourselves – that’s down to specialist solar companies. But as experienced roofers in High Wycombe, we make sure your roof is safe, solid, and ready.
Our services include:
- Full roof inspections.
- Repairs and tile replacements.
- Reinforcing roof timbers if needed.
- Checking drainage and
guttering
after installation.
We also work with solar installers to make sure everything lines up properly.
Do You Need Planning Permission?
In most cases, you don’t need planning permission for solar panels. But you might if:
- You live in a listed building.
- You’re in a conservation area.
- Panels stick out more than 200mm from your roof.
- You’re fitting panels on a flat roof with a raised frame.
FAQs
Can I put solar panels on an old roof?
Yes, but we recommend a roof inspection first if it’s over 15 years old.
Will solar panels damage my roof?
Not if installed correctly. Working with both a roofer and solar installer ensures it’s done right.
Should I repair or replace my roof before solar?
If your roof has less than 10 years of life left, it’s smart to repair or replace it first.
Who installs the panels?
The solar company installs them, but your roofer checks and prepares the structure beforehand.
“The best solar installation is a partnership. While the solar company handles the power, a local roofer ensures your roof is strong, safe, and ready to protect your home for decades to come.”
Be Solar Ready with Fix All Roofing
Solar panels can save you money and help the planet. But your roof must be ready before they go up. At Fix All Roofing, we make sure your roof in High Wycombe, Beaconsfield, Gerrards Cross, or the Chalfonts is strong, secure, and solar-ready.
Call us today for a free roof inspection and quote.
