Gutter Repair vs Replacement: A Practical Guide

When your gutters start leaking, sagging, or showing their age, you face a common dilemma: is it worth repairing them, or should you replace the lot? The answer depends on the extent of the damage, the age of the guttering, and the material. Here is how to decide.

When Gutter Repair Makes Sense

Repair is the right choice when the problem is localised and the rest of the guttering is in good condition. Common repairs include:

• Leaking joints: The most common gutter problem. uPVC gutter joints contain rubber seals that perish over time. Replacing a seal costs under £5 in materials and takes minutes. A professional will charge £30–£60 per joint.
• Loose or broken brackets: Individual brackets can be replaced without disturbing the rest of the gutter. uPVC brackets cost £1–£3 each. Professional replacement: £15–£30 per bracket.
• Small cracks or holes: Hairline cracks in uPVC guttering can be sealed with gutter sealant or repair tape. Professional repair: £20–£50 per crack.
• Blocked downpipes: Rodding or pressure jetting a blocked downpipe costs £40–£80 and restores full drainage without needing to replace anything.
• Sagging sections: Often caused by failed brackets rather than the gutter itself. Replacing brackets and resetting the fall can fix the problem for under £100.

Typical repair costs: £50–£200 for most common gutter repairs, depending on the number of issues and ease of access. Much cheaper than a full replacement if the overall system is sound.

When Replacement Is the Better Option

Replacement becomes the more cost-effective choice when problems are widespread or the guttering has reached the end of its useful life:

• Multiple leaking joints: If three or more joints are leaking, the remaining seals are likely to fail soon too. Replacing seal after seal becomes an ongoing expense that quickly exceeds the cost of new guttering.
• Widespread cracking or brittleness: uPVC gutters become brittle after 15–20 years of UV exposure. If sections are cracking when you handle them, the material is past its best and individual repairs will not last.
• Significant rust (metal gutters): Cast iron or steel gutters with extensive rust are structurally compromised. Patching corroded sections is a temporary fix at best. The rust will continue spreading.
• Persistent sagging despite bracket replacement: If gutters continue to sag even with new brackets, the gutter channel itself may be warped and unable to hold its shape.
• Mismatched or obsolete profiles: If sections have been replaced piecemeal over the years with different profiles or colours, a full replacement restores a uniform, neat appearance.
• Age: uPVC gutters over 20 years old, steel gutters over 25 years old, or any gutter system showing multiple symptoms of age is generally better replaced than repeatedly patched.

Replacement Costs: What to Budget

The cost of replacing all guttering on a UK property depends on the material chosen and the size of the property:

uPVC guttering (most common choice):

• Terraced house: £400–£700
• Semi-detached house: £600–£1,000
• Detached house: £800–£1,500

Aluminium guttering (premium option):

• Terraced house: £800–£1,200
• Semi-detached house: £1,000–£1,800
• Detached house: £1,500–£2,500

Cast iron guttering (heritage properties):

• Terraced house: £1,200–£2,000
• Semi-detached house: £1,800–£3,000
• Detached house: £2,500–£5,000+

These prices include supply, fitting, removal and disposal of the old guttering, and all fixings. Scaffolding, if needed, adds £300–£1,000 depending on the amount required.

Making the Decision: A Simple Framework

Use this simple framework to decide between repair and replacement:

• One or two isolated problems + gutters under 15 years old = REPAIR. Fix the specific issues and budget for a full replacement in a few years' time.
• Three or more problems + gutters over 15 years old = REPLACE. The cumulative cost of ongoing repairs will exceed the cost of new guttering, and you will have a system that lasts another 20+ years.
• Structural or material failure (brittleness, extensive rust, warping) = REPLACE. Regardless of age, if the material itself is failing, repairs are not a lasting solution.

A professional gutter inspection can help you decide. Many gutter cleaning companies offer a condition report as part of their cleaning service, identifying any issues and recommending whether repair or replacement is the better path. This typically costs nothing extra beyond the cleaning fee.

Top tip: If your gutters need replacing and your fascias and soffits are also showing their age, consider doing everything together. Combining the work saves significantly on scaffolding and labour costs compared with doing each job separately.