Repair vs Replacement: The Decision Criteria
The single most useful decision rule: if the cost of repair exceeds 40 percent of the cost of full replacement, replace. At that threshold, you are spending significant money for a repair that is unlikely to give you 40 percent of the replacement's remaining useful life.
Other criteria that favour replacement over repair:
- The system is more than 20 years old (uPVC) or more than 40 years old (aluminium or steel)
- More than two sections or joints are failing simultaneously
- The gutters are undersized for the roof area and regularly overflow in heavy rain even when clear
- You are replacing the fascias and soffits at the same time (the scaffold is up anyway, replacement adds minimal marginal cost)
- The existing material is no longer available for matching (discontinued profile or colour)
Criteria that favour repair over replacement:
- Single localised failure: one leaking joint, one cracked section, one broken bracket
- The system is under 10 years old and otherwise in good condition
- The failure has a clear cause (physical impact, frost damage to a single joint) rather than age-related generalised deterioration
Gutter Repair Costs by Type (2026)
For targeted repairs where the rest of the system is in good condition:
| Repair type | Typical cost | Duration |
|---|---|---|
| Resealing a leaking joint (uPVC) | £60 to £90 | 30 to 60 min |
| Replacing a bracket or clip | £40 to £80 | 30 to 45 min |
| Replacing one section of uPVC gutter | £80 to £150 | 1 to 2 hours |
| Clearing a blocked downpipe | £75 to £150 | 1 to 2 hours |
| Replacing a section of downpipe | £80 to £200 | 1 to 3 hours |
| Cast iron gutter joint repair | £100 to £180 | 2 to 3 hours |
| Rehang and re-level a gutter run | £150 to £300 | 2 to 4 hours |
Labour rates for guttering work run £150 to £200 per day. Most repairs are priced per job rather than per hour. Call-out charges are common, particularly for small single-joint repairs: many companies have a minimum visit charge of £50 to £80.
Gutter Replacement Costs by Property Type (2026)
Full system replacement includes all gutters, downpipes, gutter brackets and joint fittings in the specified material. Standard half-round or square uPVC is the baseline.
| Property type | uPVC | Aluminium | Cast iron |
|---|---|---|---|
| Terraced house (26m perimeter) | £850 to £1,200 | £1,400 to £2,000 | £1,600 to £2,500 |
| Semi-detached (32m) | £1,200 to £1,600 | £1,800 to £2,500 | £2,000 to £3,000 |
| Detached house (46m+) | £1,800 to £2,500 | £2,500 to £3,500 | £3,000 to £4,500 |
| Bungalow (28m) | £900 to £1,300 | £1,500 to £2,100 | £1,700 to £2,600 |
These prices include removal and disposal of the existing system. They assume the fascia boards are sound and do not need replacing (gutters are fixed to them). If fascias are rotten, replacing gutters without replacing fascias first is counterproductive.
Material Lifespan and When Each Needs Replacing
The material determines the realistic replacement timeline:
- uPVC — 25 to 40 years. The most common material in UK residential guttering. Fails through UV embrittlement (becomes brittle and cracks in cold snaps), joint seal degradation, and bracket clip failure. When joints start leaking on a uPVC system over 25 years old, the whole system is typically approaching end of life.
- Aluminium — 30 to 50 years. More durable than uPVC, more expensive. Seamless aluminium guttering is extruded on-site to run continuously without joints (joints are the primary failure point). Premium choice for new builds and full replacements.
- Cast iron — 50 to 100 years if maintained. The historic material for UK guttering. Still functional on Victorian and Edwardian properties. Requires periodic repainting (every 10 to 15 years) to prevent rust. Individual sections can be replaced like-for-like. Significantly heavier than uPVC or aluminium.
- Steel — similar to aluminium in lifespan, though more susceptible to corrosion in coastal environments.
The Scaffolding Saving: Combining Gutter and Fascia Work
Scaffolding or access equipment is often the largest single cost item in any roofline job. Scaffold for a standard semi-detached house costs £500 to £1,200. If your fascias and soffits are also due for replacement (or if you are having any other work done at roof level), doing all three jobs simultaneously eliminates separate scaffold mobilisation costs entirely.
The maths: gutter replacement alone on a semi-detached (£1,200 to £1,600, including access) plus fascia replacement later (£1,500 to £3,500, including new scaffold) totals £2,700 to £5,100. Combined in a single job: £2,000 to £3,800. The saving is real and consistent, typically £500 to £1,200.
When quoting, always ask: "If I add fascia and soffit replacement to this job, what does that change the price to?" Any roofline specialist can give you a combined quote and the comparison tells you immediately whether the combined job makes economic sense at this time.