A quick self-check
- Is there a clear roof area without too many roof windows, vents or obstacles?
- Does the roof receive useful daylight for much of the day?
- Are trees, chimneys or nearby buildings likely to cast shade?
- Is the roof in sound condition with no planned replacement?
- Is there safe access for survey, scaffolding and installation?
- Are there property restrictions such as listed status, conservation area or leasehold conditions?
Direction and pitch
A south-facing unshaded roof is often favourable for overall generation in the UK, but east- and west-facing roofs can also be useful. Direction should not be judged alone. A clear east- or west-facing roof can sometimes be more practical than a nominally better-facing area affected by shade or limited space.
Shade and obstacles
Shade from trees, chimneys, aerials, nearby buildings and parts of the property can affect output. The timing and extent of shade may change by season. A proper assessment should consider the pattern and should not treat one photograph as the full answer.
Condition, structure and covering
Solar equipment is intended to remain in place for a long period. A roof with known leaks, loose coverings or near-term repair needs should be investigated first. Different roof coverings need different mounting approaches, and structural suitability may need professional confirmation.
The rest of the system
A solar project includes cable routes, inverter position, consumer unit arrangements, metering and electrical protection. A roof can look suitable while the wider installation still needs careful checking.
Questions to ask before deciding
- What roof areas are usable after obstacles and access are considered?
- Is shade significant at important times of day or year?
- Does the roof need work before installation?
- Where would inverter, cabling and electrical equipment go?
- Does the proposed layout support the household’s actual energy objectives?
Information and source control
Information correct as of: 17 July 2026
Sources available on request or reviewed during consultation.
