Roofing guarantees, what to check
A workmanship guarantee typically runs 10 years upwards for a full re-roof, separate from any manufacturer's guarantee on the tiles or felt itself. Ask whether the guarantee is insurance-backed (protects you if the roofer goes out of business) — this varies between individual roofers and isn't automatic.
What affects the cost
Cost depends on roof size and pitch (steeper roofs need more scaffolding and take longer), the material (slate costs more than concrete tile), access, and whether the existing roof structure (timbers, felt) needs work too, not just the visible covering. A straightforward repair is quick; a full re-roof including scaffolding commonly takes 1-3 weeks.
Roof orientation and solar suitability
A south-facing roof slope generally gets the most useful sun for solar panels, though east/west-facing roofs can still work reasonably well. A roofer or solar installer assessing suitability will look at pitch, orientation, shading from nearby trees or buildings, and roof structural capacity together.
Flat roof vs pitched roof considerations
Flat roofs (felt, GRP fibreglass, or rubber/EPDM) typically need replacing more often than a pitched tiled roof, but repairs are usually quicker and cheaper. A flat roof extension on an older pitched-roof property is common and often uses a different material and roofer specialism than the main roof.
Roofing regulations, FAQ
Do I need planning permission for a new roof? Usually not for like-for-like replacement, but altering the roofline, adding a dormer, or working on a listed building often does. Do I need Building Regulations sign-off? Yes for most re-roofing work involving insulation changes — a competent roofer will handle or advise on this.
Common roofing jobs
Roofers handle full re-roofs, repairs to individual slipped or cracked tiles, flat roof replacement, guttering, fascias and soffits, and leadwork around chimneys and roof valleys. Emergency work — storm damage, a leak during heavy rain — is usually handled separately from planned re-roofing.
Scaffolding — why it's often a separate cost
Scaffolding is frequently quoted separately from the roofing work itself, priced by roof height, access and how long it's needed. For a small repair some roofers use a tower or ladder instead, but anything involving a full re-roof or significant chimney work usually needs full scaffolding for safety and building regulations reasons.
Roofing on extensions and new builds
A new roof needs to tie into the existing structure correctly at the junction — a common source of leaks on extensions is poor detailing at exactly this point, not the new roof covering itself. Timing roofing work before internal trades start avoids water damage to work done underneath.