--- title: "Roof Insulation Costs UK 2026 — Types, Prices & Savings" description: "How much does roof insulation cost in the UK? Compare loft, rafter, and flat roof insulation prices. Plus: energy savings and available grants." lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "Article", "headline": "Roof Insulation Costs UK 2026 — Types, Prices & Savings", "description": "How much does roof insulation cost in the UK? Compare loft, rafter, and flat roof insulation prices. Plus: energy savings and available grants.", "url": "https://howmuchdoesanewroofcost.co.uk/blog/roof-insulation-costs-uk", "author": { "@type": "Organization", "name": "RoofCost UK", "url": "https://howmuchdoesanewroofcost.co.uk" }, "publisher": { "@type": "Organization", "name": "RoofCost UK", "url": "https://howmuchdoesanewroofcost.co.uk", "logo": { "@type": "ImageObject", "url": "https://howmuchdoesanewroofcost.co.uk/favicon.ico" } }, "mainEntityOfPage": { "@type": "WebPage", "@id": "https://howmuchdoesanewroofcost.co.uk/blog/roof-insulation-costs-uk" }, "inLanguage": "en-GB", "datePublished": "2026-01-15", "dateModified": "2026-05-11" }, { "@context": "https://schema.org", "@type": "Organization", "name": "RoofCost UK", "url": "https://howmuchdoesanewroofcost.co.uk", "logo": "https://howmuchdoesanewroofcost.co.uk/favicon.ico", "areaServed": { "@type": "Country", "name": "United Kingdom" }, "sameAs": [] }, { "@context": "https://schema.org", "@type": "WebSite", "name": "RoofCost UK", "url": "https://howmuchdoesanewroofcost.co.uk", "inLanguage": "en-GB", "publisher": { "@type": "Organization", "name": "RoofCost UK" } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://howmuchdoesanewroofcost.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://howmuchdoesanewroofcost.co.uk/blog" }, { "@type": "ListItem", "position": 3, "name": "Roof Insulation Costs in the UK" } ] }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Is roof insulation worth it UK?", "acceptedAnswer": { "@type": "Answer", "text": "Absolutely. Loft insulation typically costs £300–£600 and saves £150–£250 per year on heating bills, paying for itself within 2–3 years. It's one of the most cost-effective home improvements available." } }, { "@type": "Question", "name": "Can I get free roof insulation in the UK?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, through the ECO4 scheme, qualifying households can receive free loft insulation. The Great British Insulation Scheme and local authority grants also offer free or subsidised insulation to eligible homeowners." } } ] } ] --- [![RoofCost UK](/assets/logo-BsvnkkxD.png)RoofCost UK ](/) [Home](/) Cost Guides [New Roof Cost UK](/new-roof-cost-uk)[Roof Cost Per m²](/roof-cost-per-m2)[3-Bedroom House Roof](/new-roof-cost-3-bedroom-house)[Flat Roof Replacement](/flat-roof-replacement-cost)[Pitched Roof Cost](/pitched-roof-cost-uk)[Repair vs Replacement](/roof-replacement-vs-repair-cost)[Labour Costs](/roof-labour-cost-uk)[Garage Roof Cost](/garage-roof-replacement-cost) [Roof Calculator](/roof-cost-calculator)[Blog](/blog) [Get Free Quote](/roof-cost-calculator) ### Instant Roof Cost Calculator Complete every field to reveal your 2026 estimate Property / Roof Type Terraced house (~50 m²) 3-bed semi-detached (~65 m²) Detached (~85 m²) Bungalow (~90 m²) Single garage roof (~15 m²) Extension / flat roof (~25 m²) Enter my own m² Material Concrete Tiles Clay Tiles Natural Slate Synthetic Slate EPDM Rubber (Flat) GRP Fibreglass (Flat) 3-Layer Felt (Flat) Tile Type Standard interlocking Plain / small format Handmade / heritage Lightweight synthetic N/A — flat roof system Roof Complexity Simple (gable, no chimneys/dormers) Standard (hip roof, 1 chimney) Complex (dormers, valleys, 2+ chimneys) Location (UK Region) London South East South West East of England East Midlands West Midlands Yorkshire & Humber North West North East Wales Scotland Northern Ireland 📱 Enter your first name, phone number and postcode so we can send your estimate by SMS. Only these details are required. I agree to the [Privacy Policy](/privacy-policy) and [Terms](/terms-and-conditions), and consent to being contacted by relevant roofing companies about my quote, including by SMS. Reveal My Roof Cost Estimate → 🔒 We only need your first name, phone number and postcode to send your estimate by SMS. 1. [Home](/) 2. [Blog](/blog) 3. Roof Insulation Costs in the UK [Back to Blog](/blog) 5 February 2026 5 min read # Roof Insulation Costs in the UK Good roof insulation is one of the most cost-effective improvements you can make to your home. Whether you're having a new roof fitted or looking to improve insulation on its own, here's what you need to know about costs and benefits. ## Insulation Costs by Type Type Cost Energy Saving Loft Roll (between joists) £300 – £600 Up to 25% Loft Roll (DIY) £150 – £300 Up to 25% Between-Rafter Insulation £1,500 – £3,000 15–20% Spray Foam £1,200 – £2,500 15–25% Flat Roof Insulation £500 – £1,500 10–20% ## Adding Insulation During a Roof Replacement If you're already having your roof replaced, adding insulation at the same time is significantly cheaper than doing it separately. The roof is already stripped, making it easy to install between-rafter or above-rafter insulation. The additional cost is typically £500–£1,500 on top of the re-roofing price. ## Government Grants and Schemes Several schemes can help with insulation costs: - **ECO4 Scheme** — free insulation for qualifying low-income households - **Great British Insulation Scheme** — available to households in council tax bands A–D - **Local authority grants** — many councils offer additional funding - **Energy company obligations** — your energy supplier may offer free or subsidised insulation ## Return on Investment Loft insulation has one of the best returns on investment of any home improvement. At a cost of £300–£600 and annual savings of £150–£250, it typically pays for itself within 2–3 years. Over a 40-year lifespan, that's a potential saving of £6,000–£10,000. ### Instant Roof Cost Calculator Complete every field to reveal your 2026 estimate Property / Roof Type Terraced house (~50 m²) 3-bed semi-detached (~65 m²) Detached (~85 m²) Bungalow (~90 m²) Single garage roof (~15 m²) Extension / flat roof (~25 m²) Enter my own m² Material Concrete Tiles Clay Tiles Natural Slate Synthetic Slate EPDM Rubber (Flat) GRP Fibreglass (Flat) 3-Layer Felt (Flat) Tile Type Standard interlocking Plain / small format Handmade / heritage Lightweight synthetic N/A — flat roof system Roof Complexity Simple (gable, no chimneys/dormers) Standard (hip roof, 1 chimney) Complex (dormers, valleys, 2+ chimneys) Location (UK Region) London South East South West East of England East Midlands West Midlands Yorkshire & Humber North West North East Wales Scotland Northern Ireland 📱 Enter your first name, phone number and postcode so we can send your estimate by SMS. Only these details are required. I agree to the [Privacy Policy](/privacy-policy) and [Terms](/terms-and-conditions), and consent to being contacted by relevant roofing companies about my quote, including by SMS. Reveal My Roof Cost Estimate → 🔒 We only need your first name, phone number and postcode to send your estimate by SMS. ## Frequently Asked Questions Is roof insulation worth it UK? Can I get free roof insulation in the UK? ## Explore Our Roofing Cost Guides [ ### New Roof Cost UK Complete guide to UK roofing prices in 2026 ](/new-roof-cost-uk)[ ### Roof Cost Per m² Price breakdowns by square metre ](/roof-cost-per-m2)[ ### 3-Bedroom House Roof What to expect for a typical 3-bed home ](/new-roof-cost-3-bedroom-house)[ ### Flat Roof Replacement Costs for flat roof materials and installation ](/flat-roof-replacement-cost)[ ### Pitched Roof Cost Pitched roof pricing and considerations ](/pitched-roof-cost-uk)[ ### Repair vs Replacement When to repair and when to replace ](/roof-replacement-vs-repair-cost)[ ### Roof Labour Costs What roofers charge across the UK ](/roof-labour-cost-uk)[ ### Garage Roof Cost Garage roof replacement pricing guide ](/garage-roof-replacement-cost)[ ### Roof Cost Calculator Get an instant estimate for your roof ](/roof-cost-calculator) ## Get Your Free Roof Cost Estimate 30 seconds. No obligation. Trusted local roofers. ### Instant Roof Cost Calculator Complete every field to reveal your 2026 estimate Property / Roof Type Terraced house (~50 m²) 3-bed semi-detached (~65 m²) Detached (~85 m²) Bungalow (~90 m²) Single garage roof (~15 m²) Extension / flat roof (~25 m²) Enter my own m² Material Concrete Tiles Clay Tiles Natural Slate Synthetic Slate EPDM Rubber (Flat) GRP Fibreglass (Flat) 3-Layer Felt (Flat) Tile Type Standard interlocking Plain / small format Handmade / heritage Lightweight synthetic N/A — flat roof system Roof Complexity Simple (gable, no chimneys/dormers) Standard (hip roof, 1 chimney) Complex (dormers, valleys, 2+ chimneys) Location (UK Region) London South East South West East of England East Midlands West Midlands Yorkshire & Humber North West North East Wales Scotland Northern Ireland 📱 Enter your first name, phone number and postcode so we can send your estimate by SMS. Only these details are required. I agree to the [Privacy Policy](/privacy-policy) and [Terms](/terms-and-conditions), and consent to being contacted by relevant roofing companies about my quote, including by SMS. Reveal My Roof Cost Estimate → 🔒 We only need your first name, phone number and postcode to send your estimate by SMS. ### RoofCost UK The UK's most comprehensive roofing cost guide. Updated pricing for 2026 to help homeowners make informed decisions. #### Cost Guides - [New Roof Cost UK](/new-roof-cost-uk) - [Roof Cost Per m²](/roof-cost-per-m2) - [3-Bed House Roof Cost](/new-roof-cost-3-bedroom-house) - [Flat Roof Replacement](/flat-roof-replacement-cost) - [Pitched Roof Cost](/pitched-roof-cost-uk) #### More Guides - [Repair vs Replacement](/roof-replacement-vs-repair-cost) - [Labour Costs](/roof-labour-cost-uk) - [Garage Roof Cost](/garage-roof-replacement-cost) - [Roof Cost Calculator](/roof-cost-calculator) - [Blog](/blog) #### Contact - [info@howmuchdoesanewroofcost.co.uk](mailto:info@howmuchdoesanewroofcost.co.uk) - United Kingdom © 2026 RoofCost UK. All rights reserved. [Privacy Policy](/privacy-policy)[Terms & Conditions](/terms-and-conditions) UK Roofing Cost Guide 2026 — Updated UK Pricing [Get Free Quote](/roof-cost-calculator)