Solar on Flat Roofs UK

Can you put solar panels on a flat roof?

Flat roofs are EXCELLENT for solar panels: (1) FLEXIBLE ORIENTATION — tilt frames can face any direction (optimal south at 30-35°). (2) EASY ACCESS — safer to install and maintain than pitched roofs. (3) NO TILE DAMAGE — ballasted or fixed frames, no drilling through tiles. (4) DUAL ORIENTATION — east/west split maximises all-day generation. Extra cost: £500-£1,000 for mounting frames. Frame types: ballasted (weighted, no penetrations — ideal for flat roofs) or fixed (bolted through membrane with waterproof seals). Tilt angle: 10-15° is common to reduce wind loading and avoid self-shading between rows. Output: 85-95% of optimal south-facing pitched roof. Planning: may be visible from ground level — check permitted development rules.