Is my roof suitable for solar in the UK? A 5-minute checklist for 2025
Most pitched roofs in the UK are suitable. You need enough unshaded area for a sensible number of panels, a sound roof, reasonable orientation and pitch, and a tidy cable route to your consumer unit. If shade or roof shape makes things awkward, then panel-level electronics and smart mounting usually solve it.
A Quick 5-minute checklist
1) Unshaded area
Look at the roof morning, midday and late afternoon. Note chimneys, dormers and trees. Light, moving shade can be managed. Heavy, fixed shade across most of the array needs a different layout or a solar panel-level kit.
2) Orientation and pitch
South facing roofs are best. South-east or south-west are still excellent. East and west work well with a slightly larger array and suit homes with morning and evening demand. Most UK pitches from 25° to 40° are ideal. Low or high pitches still work with the right mounting frame.
3) Roof condition
The tiles or slates should be sound with no widespread cracking or slipping. If the roof is likely to need work within the next five to ten years, you may want to consider either repairing or re-roofing prior to installing your solar panels. This will avoid doing the job twice.
4) Cable run and equipment space
Check there is a neat route to the consumer unit and space for the inverter and, if wanted, a storage battery. Lofts, utilities and garages are common locations. Keep clear spaces around the equipment and avoid very hot areas.
Common edge cases and simple fixes
Complex roofs or dormers: Solar arrays can be split across roof faces. An east/west split can extend generation through the day.
Shade from trees or chimneys: Use micro-inverters or DC optimisers so one shaded panel does not pull the string (the rest of the panels) down. Trim trees where allowed.
Flat roofs: Ballasted frames at a low tilt reduce wind load and visibility. They also avoid puncturing any membrane or roof covering on a flat roof.
Heritage or conservation areas: Consider in-roof modules or discreet placements. Get planning advice early.
Small roof area: High-efficiency modules or a smaller array paired with a battery can still deliver substantial savings.
What our survey will confirm
Exact roof measurements and safe fixing positions
Shade modelling including consideration of the seasons
Best inverter choice: string, optimisers or micro-inverters
Cable route, isolator positions and earthing
Consumer unit capacity and any upgrades needed
Where an optional battery and EV charger would be best suited
Your Next step
Next step: See what your system could look like.
FAQ's
Do I need a south-facing roof?
No. South-east and south-west perform very well. East and west are also fine, especially with an east/west split that matches morning and evening use.
Will shade impede the system?
Not if the system is designed correctly. Micro-inverters or DC optimisers isolate shaded panels so the rest keep producing.
Can I put panels on a flat roof?
Yes. We use ballasted frames at a modest tilt. During survey we check wind load, visibility and access, then choose a frame that suits the roof.