Should I Repair or Replace My Guttering?

Average UK labour and parts costs — always get multiple quotes from local engineers.

UPVC guttering lasts 20–30 years. Cast iron guttering, if maintained and painted, can last 100+ years. The main causes of failure are blockages (leaves, moss, debris), joint failures, and physical damage. Annual cleaning in autumn significantly extends the life of all guttering systems.

Guttering repairs are almost always worth doing quickly — small leaks and blockages become expensive structural problems if ignored. A £60–£150 annual clean prevents most issues. Individual section replacements (£80–£200) are cheap and straightforward. Full replacement is only needed when the majority of the run is failed or beyond economic repair.

The three main guttering materials used on UK homes are UPVC, cast iron, and aluminium — and the type you have significantly affects both repair costs and options. UPVC guttering is by far the most common on modern homes. It's lightweight, cheap to replace (£5–£15 per metre), and widely stocked at builders' merchants. Cast iron guttering is found on period properties and conservation areas. It's far more durable but heavier and more expensive to repair — specialist fitting can cost two to three times more than UPVC. Aluminium guttering sits in between: it's rust-proof, lighter than iron, and increasingly popular on new builds. Knowing your gutter material before requesting quotes helps you get accurate estimates and find a tradesperson with the right experience for the job.

• Water pouring over the edges during rain — this points to severe blockages or sagging sections that are no longer channelling water to the downpipe.
• Visible cracks or splits in the gutter run — UPVC becomes brittle over time, especially on south-facing elevations exposed to UV.
• Damp patches on external walls — water running down the brickwork below the gutter line is a clear sign of failure and can lead to penetrating damp inside.
• Guttering pulling away from the fascia board — broken brackets or rotting fascia boards mean the system can no longer support itself.
• Green staining or algae growth beneath joints — persistent dripping from failed joints causes telltale streaks on walls and brickwork.

Guttering is one of the cheapest parts of your home to maintain — yet one of the most expensive to ignore. An annual gutter clean in autumn costs £60–£150 and prevents the vast majority of issues. Fitting gutter guards or leaf screens (£5–£15 per metre) reduces debris build-up, particularly if you have nearby trees. Well-maintained guttering protects fascia boards, exterior walls, and even foundations from water damage that can cost thousands to fix. For homeowners looking to sell, surveyors always check guttering condition — failed gutters are a red flag in UK property surveys and can affect mortgage valuations. Investing £100–£200 a year in routine gutter maintenance can easily prevent repair bills ten times that amount further down the line.

Guttering maintenance is one of those jobs many homeowners can manage — provided you're comfortable working at height safely. For anything above single-storey level or involving cast iron systems, calling a professional is the sensible choice.

Safe DIY Repairs

• Clearing blockages and debris from UPVC gutters — save £50–£100. Scoop out leaves and flush with a hose. A gutter scoop tool costs under £5. Do this at least twice a year, ideally in late autumn and spring.
• Resealing leaking UPVC gutter joints — save £40–£80. Remove the old sealant, clean the joint, and apply gutter sealant or replace the rubber gasket. Takes about 20 minutes per joint.
• Replacing a single UPVC gutter section or bracket — save £30–£70. UPVC gutter lengths clip together and are widely available at B&Q or Screwfix. Ensure you match the profile (half-round, square, or deep-flow).

Always Hire a Professional

• Full guttering replacement on a two-storey house (£400–£1,200) — Requires scaffolding or a tower for safe access at height — falls from ladders are one of the most common causes of serious DIY injury in the UK
• Repairing or replacing cast iron guttering (£80–£200 per metre) — Cast iron is extremely heavy and brittle, requiring specialist handling and often heritage-appropriate materials on listed buildings
• Diagnosing and fixing hidden fascia board rot behind gutters (£200–£600) — Requires removing guttering to access and replace rotted timber, often with additional treatment needed to prevent recurrence

Always prioritise safety when working at height — if the job requires anything beyond a stable stepladder on level ground, hire a professional with proper access equipment.