--- title: "Roof Replacements Tredegar & South Wales | Gwent Roofing" description: "Complete roof replacements in Tredegar, Ebbw Vale & South Wales. Strip and re-roof with slate, tile or composite. 25+ years experience. Free estimates. 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Strip and re-roof with slate, tile or composite. 25+ years experience. Free estimates. Fully insured.", "url": "https://gwentroofingandbuildings.com/services/roof-replacements", "provider": { "@type": "RoofingContractor", "name": "Gwent Roofing and Building Maintenance", "telephone": "+447949926887", "address": { "@type": "PostalAddress", "streetAddress": "23 Ashvale", "addressLocality": "Tredegar", "addressRegion": "Blaenau Gwent", "postalCode": "NP22 4AG", "addressCountry": "GB" } }, "areaServed": [ "Tredegar", "Ebbw Vale", "Merthyr Tydfil", "Abertillery", "Aberdare", "Blackwood", "Bargoed", "Blaenavon", "Crickhowell" ] }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much does a full roof replacement cost?", "acceptedAnswer": { "@type": "Answer", "text": "A terraced property typically costs £4,000 to £7,000. Semi-detached homes range from £5,500 to £9,000. Detached properties are typically £7,000 to £14,000+ depending on size, materials, and complexity. We provide free, fixed-price quotes." } }, { "@type": "Question", "name": "How long does a roof replacement take?", "acceptedAnswer": { "@type": "Answer", "text": "Most domestic roof replacements are completed in 3 to 5 working days. Larger or more complex projects may take up to 7 days. We always agree a timeline before starting." } }, { "@type": "Question", "name": "Will I need to move out during the work?", "acceptedAnswer": { "@type": "Answer", "text": "No. You can stay in your home throughout. There will be some noise during working hours, but we minimise disruption as much as possible." } }, { "@type": "Question", "name": "Do you replace the timber as well?", "acceptedAnswer": { "@type": "Answer", "text": "We inspect all timbers during the strip. Any rotten, split, or weakened sections are replaced with treated softwood. Timber replacement is included in the quote if identified during our survey." } }, { "@type": "Question", "name": "What guarantee do I get on a new roof?", "acceptedAnswer": { "@type": "Answer", "text": "You receive a written workmanship guarantee of up to 20 years. Material manufacturer guarantees also apply — typically 15 to 30 years depending on the product." } }, { "@type": "Question", "name": "Do you handle building regulations and inspections?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. If your roof replacement requires building control notification, we handle the process. We ensure all work complies with current Building Regulations Part L (thermal) and Part C (moisture)." } }, { "@type": "Question", "name": "Can I change my roof tiles to a different style?", "acceptedAnswer": { "@type": "Answer", "text": "Absolutely. A full replacement is the perfect opportunity to change materials. We can advise on the best options for your property type and budget." } }, { "@type": "Question", "name": "Do you offer finance for roof replacements?", "acceptedAnswer": { "@type": "Answer", "text": "We do not currently offer finance directly. However, we can provide staged payment options on larger projects. Contact us to discuss arrangements." } }, { "@type": "Question", "name": "What happens if it rains during the replacement?", "acceptedAnswer": { "@type": "Answer", "text": "We monitor weather forecasts closely and use heavy-duty tarpaulins to protect exposed areas overnight and during rain. Your property is never left unprotected." } }, { "@type": "Question", "name": "Do I need planning permission for a roof replacement?", "acceptedAnswer": { "@type": "Answer", "text": "In most cases, a like-for-like replacement does not require planning permission. If you are changing the roof height, shape, or materials significantly, permission may be needed. We advise you during the survey." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://gwentroofingandbuildings.com/" }, { "@type": "ListItem", "position": 2, "name": "Services", "item": "https://gwentroofingandbuildings.com/services" }, { "@type": "ListItem", "position": 3, "name": "Roof Replacements" } ] } ] --- [![Gwent Roofing and Building Maintenance — trusted roofers in South Wales](/images/logo.png)](/) [Home](/) [Services](/services) [Areas](/areas)[About](/about)[Our Work](/our-work)[Reviews](/reviews)[Contact](/contact) [07949 926887](tel:+447949926887)Free Quote 1. [Home](/) 2. [Services](/services) 3. Roof Replacements # Complete Roof Replacements Built to Outlast the Welsh Weather When repairs are no longer enough, a full roof replacement gives your home decades of watertight protection. We strip back to the timbers, inspect everything, and rebuild your roof using premium materials — so you never have to worry about it again. [Request a Free Estimate](/contact) [Call 07949 926887](tel:+447949926887) ★ Over 500 full roof replacements completed across South Wales 25+ Years Experience 500+ Roofs Replaced Up to 20-Year Guarantee Completed in 3–5 Days Free Survey & Estimate ## What This Service Involves A roof replacement is one of the most significant investments you can make in your property. Done correctly, it adds decades of protection, improves energy efficiency, eliminates damp problems, and increases your home's market value. Done badly, it creates problems that are expensive and disruptive to fix. At Gwent Roofing and Building Maintenance, we specialise in full roof replacements for homeowners across Tredegar, Ebbw Vale, Merthyr Tydfil, and the wider South Wales valleys. Every replacement begins with a complete strip-back to the rafters so we can inspect the timber structure, replace any rotten sections, and install modern breathable membrane before re-battening and re-tiling or re-slating. ![Before and after full roof replacement on a bungalow in South Wales](/portfolio/portfolio-49.jpg) ![Concrete roof tiles stacked on battens during a full roof replacement](/portfolio/portfolio-50.jpg) ![Large-scale slate roof replacement with scaffolding on a stone barn conversion](/portfolio/portfolio-46.jpg) ![Completed dark slate roof replacement close-up showing clean finish](/portfolio/portfolio-44.jpg) We do not cut corners. We do not leave old felt in place to save time. We do not skip the membrane or ventilation because it is hidden. Every layer of your new roof is installed to current building regulations and designed to perform for 40 to 60 years. Our approach is simple: inspect thoroughly, quote honestly, build properly. Whether your home is a stone-built terrace in Tredegar or a rendered semi in Bargoed, we deliver the same standard of workmanship on every job. ## Why Patching an Old Roof Costs You More in the Long Run Many homeowners delay a full roof replacement because of the upfront cost. Instead, they pay for repair after repair — a tile here, a patch there, a bucket in the loft when it rains hard. Over five to ten years, those repair bills add up to more than a new roof would have cost. Worse, repeated patching allows hidden damage to progress. Rotten timbers weaken the structure. Damp penetrates insulation and walls. Mould develops in spaces you cannot see, affecting air quality and potentially causing health problems for your family. Old roofs also lack modern insulation and ventilation standards. A roof built in the 1970s or earlier will be losing significant heat, pushing your energy bills higher every winter. A new roof with modern insulation can cut your heating costs substantially. There is also the resale value factor. Estate agents confirm that a visibly tired roof deters buyers and reduces offers. A new roof is one of the strongest selling points a property can have — it tells buyers they will not face unexpected costs after moving in. ## How We Work 1 ### Full Roof Survey We inspect your entire roof structure — externally and from inside the loft. We assess timbers, insulation, ventilation, and identify every issue. 2 ### Detailed Specification & Quote You receive a written specification detailing every material and method. The quote is fixed — no surprises. 3 ### Scaffolding & Preparation We erect scaffolding, protect your property with sheeting, and prepare for a clean, safe strip. 4 ### Strip & Timber Inspection Old tiles, felt, and battens are removed. All timbers are inspected and any rotten or damaged sections replaced. 5 ### Rebuild & Finish Breathable membrane, counter battens, new battens, and your chosen tiles or slates are installed. Ridge, verge, and valley details are completed to the highest standard. ## Why Homeowners Choose Us ### 40–60 Year Lifespan A properly installed new roof lasts decades. You will not need to think about it again in your lifetime. ### Reduced Energy Bills Modern insulation and ventilation improve thermal performance, keeping your home warmer in winter and cooler in summer. ### Increased Property Value A new roof is one of the highest-return home improvements. Estate agents agree it is a major selling point. ### Eliminates Damp & Mould A watertight roof with proper ventilation stops condensation problems and protects your family's health. ### Fixed-Price Guarantee The price we quote is the price you pay. We absorb any unforeseen costs — that is our commitment to you. ### Minimal Disruption Most roof replacements are completed in 3 to 5 days. We keep noise and disruption to an absolute minimum. ## Roof Replacement Materials & Specifications We offer a full range of roofing materials for your replacement. Welsh slate is the premium choice for properties in the valleys — naturally quarried, incredibly durable, and aesthetically beautiful. We also supply and install Marley, Redland, and Russell roof tiles in concrete and clay profiles. Every roof replacement includes a breathable roofing membrane (BS 5534 compliant) installed over the rafters. This membrane replaces traditional felt and allows moisture vapour to escape while preventing wind-driven rain from penetrating. It is a critical component of modern roof construction. We install treated softwood battens at precise gauge spacing matched to your chosen tile or slate profile. Counter battens are fitted where required to create a ventilated airspace between membrane and covering — essential for preventing condensation in the roof void. Ridge systems can be traditional mortar-bedded or modern dry-fixed using mechanical fixings. Dry ridge systems are now the default recommendation as they resist storm uplift, require no maintenance, and comply with current regulations. We install Manthorpe, Klober, and similar approved systems. All valley, hip, and verge details are finished using appropriate materials — lead valleys are hand-dressed on site, and fibreglass valleys are available as a lower-cost alternative. Verge caps and clips are mechanically fixed to prevent wind damage. For properties in exposed locations such as the upper valleys around Ebbw Vale and Blaenavon, we specify enhanced fixings and wind uplift resistance. Every tile or slate is nailed and clipped where required, not simply hung. This exceeds minimum standards but is essential in our local conditions. ## Frequently Asked Questions ### How much does a full roof replacement cost? ### How long does a roof replacement take? ### Will I need to move out during the work? ### Do you replace the timber as well? ### What guarantee do I get on a new roof? ### Do you handle building regulations and inspections? ### Can I change my roof tiles to a different style? ### Do you offer finance for roof replacements? ### What happens if it rains during the replacement? ### Do I need planning permission for a roof replacement? ## Related Services [Roofing](/services/roofing) [Roof Repairs](/services/roof-repairs) [Flat Roofs](/services/flat-roofs) [Fascias & Soffits](/services/fascias-soffits) [Loft Conversions](/services/loft-conversions) [← Back to Home](/)[Contact Us](/contact)[Customer Reviews](/reviews)[Our Work](/our-work) 5.0 Rated on Google · 3,000+ jobs completed ## Get Your Free Estimate Today No obligation. No hidden costs. Just honest advice from a local tradesman with 25+ years of experience. [Get Your Free Estimate](/contact)[07949 926887](tel:+447949926887) Reply within 1 hour · Free & no obligation · 24/7 emergency callouts [![Gwent Roofing and Building Maintenance — trusted roofer in Tredegar and South Wales](/images/logo.png)](/) Professional [roofing](/services/roofing) and [building services](/services/extensions) across South Wales. 25+ years of trusted craftsmanship serving [Tredegar](/areas/tredegar), [Ebbw Vale](/areas/ebbw-vale), [Merthyr Tydfil](/areas/merthyr-tydfil), and the valleys. 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