--- title: "The Real Cost of Blocked Gutters | J&Co Contractors" description: "What blocked gutters actually cost when ignored — damp, rotten fascias, foundation movement. From a Hertfordshire contractor with 25 years on the tools." lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "BlogPosting", "headline": "What Blocked Gutters Actually Cost You — and Why a £120 Clean Saves £6,000 Later", "description": "What blocked gutters actually cost when ignored — damp, rotten fascias, foundation movement. From a Hertfordshire contractor with 25 years on the tools.", "mainEntityOfPage": "https://jandco-contractorsltd.co.uk/blog/blocked-gutters-real-cost/", "datePublished": "2026-05-07", "dateModified": "2026-05-07", "author": { "@type": "Person", "name": "Jamie Pocock", "jobTitle": "Owner & Lead Contractor", "worksFor": { "@id": "https://jandco-contractorsltd.co.uk/#business" } }, "publisher": { "@type": "Organization", "name": "J&Co Contractors", "url": "https://jandco-contractorsltd.co.uk", "logo": { "@type": "ImageObject", "url": "https://jandco-contractorsltd.co.uk/logo.png" } }, "image": [ "https://jandco-contractorsltd.co.uk/assets/upload-009-DFap0EVo.jpeg" ], "articleSection": "Maintenance", "keywords": "Guttering, Maintenance" }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://jandco-contractorsltd.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://jandco-contractorsltd.co.uk/blog/" }, { "@type": "ListItem", "position": 3, "name": "What Blocked Gutters Actually Cost You — and Why a £120 Clean Saves £6,000 Later", "item": "https://jandco-contractorsltd.co.uk/blog/blocked-gutters-real-cost/" } ] } ] --- We use essential cookies to run this site, and optional cookies only with your consent. [Cookie policy](/cookie-policy/) AcceptReject Open 7 days · Hours vary by day · 25 years' experience [Office: 01279 216 215](tel:01279216215) | [Mobile: 07379 964569](tel:07379964569) [![J&Co Contractors logo](/assets/jandco-logo-DkXiFtbE.png)](/) Services Areas [About](/about/) [Our Work](/our-work/) [Blog](/blog/) [Reviews](/reviews/) [Contact](/contact/) [01279 216 215](tel:01279216215) [Free Quote](/contact/) 1. [Home](/) 2. [Blog](/blog/) 3. What Blocked Gutters Actually Cost You — and Why a £120 Clean Saves £6,000 Later Maintenance # What Blocked Gutters Actually Cost You — and Why a £120 Clean Saves £6,000 Later Updated May 2026 5 min read By Jamie Pocock ![Gutter cleaning on a Hertfordshire semi-detached home](/assets/upload-009-DFap0EVo.jpeg) A gutter clean costs £80–£150 for an average semi-detached house. Ignored blocked gutters cause damage that regularly runs to £4,000–£8,000. The maths is brutal — and avoidable. ## What actually happens when gutters block Water that should run away through the downpipe instead overflows the front lip of the gutter. Where it lands depends on the property, but the four most expensive outcomes are predictable. ### 1\. Saturated render and brickwork — £600–£2,500 to fix Constant water cascading down a wall saturates the render or brick. In winter that water freezes inside the wall, expands, and blows the render off. We see this every January. ### 2\. Rotten fascia & soffit — £1,200–£2,800 to replace Water sitting in a blocked gutter wicks back into the timber fascia and soffit boards behind it. Once they rot, the only fix is full [fascia and soffit replacement](/guttering-fascias-soffits/). ### 3\. Damp inside the property — £800–£4,000 to treat Persistently saturated external walls eventually push damp through to internal plaster. Diagnosis, treatment, replastering and redecoration adds up fast. Read our [damp proofing service](/damp-proofing-waterproofing/) page for what's involved. ### 4\. Foundation movement — £6,000+ to remediate The worst case. Years of overflow water saturating the ground next to a foundation softens clay subsoils. Differential movement causes cracks in walls — and that's a structural job, not a cosmetic one. ## The simple annual habit One clear-out in late October — after the leaves are down but before the first hard freeze — prevents all of the above. For a typical 3-bed semi in Bishop's Stortford that's 30 minutes' work and £80–£120. If your gutters are over 15 years old or visibly sagging, replacement is more cost-effective than annual cleaning. New seamless aluminium or quality UPVC gutters last 20+ years and self-clean during heavy rain because the falls are correct. Guttering Maintenance ## Book your annual gutter clean before October. Bishop's Stortford, Stansted, Sawbridgeworth and surrounding villages. We clean, photograph every section, and flag anything that needs attention. [See our guttering service](/guttering-fascias-soffits/) [01279 216 215](tel:01279216215) More from the blog ## Keep reading [ ![Pitched tile roof inspection on a Hertfordshire home before winter](/assets/wa-435-169-BMBPQKLs.jpeg) Roofing ### Winter Roof Checklist: 12 Things Every Hertfordshire Homeowner Should Check Before December The 12 things that cause 90% of winter roof leaks in Hertfordshire — and how to spot them in 20 minutes from the ground. Read article ](/blog/winter-roof-checklist-hertfordshire/)[ ![EPDM flat roof replacement on a domestic extension in Bishop's Stortford](/assets/wa-435-47-C__F_29U.jpeg) Roofing ### 5 Signs Your Flat Roof Needs Replacing — Not Just Patching When patch repairs stop being economic. Five visible signs that a full flat roof replacement is the right call. Read article ](/blog/how-to-tell-if-your-flat-roof-needs-replacing/)[ ![Repointed chimney stack with new lead flashing on a Hertfordshire property](/assets/upload-019-BqExN-Zc.jpeg) Roofing ### Chimney Leak After a Storm — What to Check Before You Call Storm-driven chimney leaks have four common causes. Here's how to identify which one you're looking at. Read article ](/blog/chimney-leak-after-storm-what-to-do/) ![J&Co Contractors](/assets/jandco-logo-DkXiFtbE.png) Owner-led roofing and building contractors covering Bishop's Stortford, Hertfordshire and Essex. 25 years of hands-on trade experience. Open seven days. [01279 216 215 (office)](tel:01279216215) [07379 964569 (mobile)](tel:07379964569) [info@jandco-contractorsltd.co.uk](mailto:info@jandco-contractorsltd.co.uk) 1 Ugley Hall Cottages, Bishop's Stortford CM22 6JB Open 7 days a week - Sun 07:00–17:30 - Mon 07:00–17:00 - Tue 07:30–17:00 - Wed 07:00–17:30 - Thu 07:00–17:30 - Fri 06:00–18:00 - Sat 09:00–17:00 [](https://www.facebook.com/share/18mTGdCPdF/?mibextid=wwXIfr) ### Roofing - [All roofing services](/roofing/) - [Flat Roofing](/flat-roofing/) - [Roof Repairs & Maintenance](/roof-repairs/) - [Emergency Roof Repairs](/emergency-roof-repairs/) - [Guttering, Fascias & Soffits](/guttering-fascias-soffits/) - [Chimney Repairs & Repointing](/chimney-repairs-repointing/) ### Building & Construction - [All building services](/building-construction/) - [Building & Extensions](/building-extensions/) - [Loft Conversions](/loft-conversions/) - [Renovations & Refurbishments](/renovations-refurbishments/) - [Brickwork & Masonry](/brickwork-masonry/) - [Damp Proofing & Waterproofing](/damp-proofing-waterproofing/) - [Plastering & Rendering](/plastering-rendering/) - [Patio & Driveway Installations](/patio-driveway-installations/) - [Fencing & Garden Walls](/fencing-garden-walls/) - [Property Maintenance](/property-maintenance/) ### Areas We Cover - [Bishop's Stortford](/areas/bishops-stortford/) - [Stansted Mountfitchet](/areas/stansted-mountfitchet/) - [Sawbridgeworth](/areas/sawbridgeworth/) - [Great Dunmow](/areas/great-dunmow/) - [Harlow](/areas/harlow/) - [Saffron Walden](/areas/saffron-walden/) - [Epping](/areas/epping/) - [Ware](/areas/ware/) - [Hoddesdon](/areas/hoddesdon/) - [Broxbourne](/areas/broxbourne/) - [Cheshunt](/areas/cheshunt/) - [Welwyn Garden City](/areas/welwyn-garden-city/) - [Stevenage](/areas/stevenage/) ### Company - [About J&Co](/about/) - [Our Recent Work](/our-work/) - [Blog](/blog/) - [Customer Reviews](/reviews/) - [Contact Us](/contact/) © 2026 J&Co Builders Ltd · Trading as J&Co Contractors · All rights reserved. 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