--- title: "Drain Re-Lining | No-Dig Repair | JD Drainage" description: "Professional drain relining across the South of England. No-dig pipe repair that restores damaged drains without excavation. 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[Home](/) 2. [Services](/services) 3. Drain Re-Lining JD Drainage Solutions # Repair Your Damaged Drains Without Digging Up Your Property Drain relining creates a brand-new pipe inside your existing one — sealing cracks, closing root entry points, and restoring structural integrity. No excavation, no landscaping bills, and a 50-year design life. [Get a Free Quote](/contact)[03303 330401](tel:03303330401) 5/5 from 60 reviews All work guaranteed Same-day response 25+ Years of Experience ✓ No Excavation Required 50 Yrs Design Life 100% Work Guaranteed Available Same-Day Assessment ## What Is Drain Re-Lining? Drain relining — also known as cured-in-place pipe (CIPP) lining — is a trenchless repair method that installs a new structural liner inside your existing drain pipe. The liner is made of resin-saturated felt or fibreglass, inserted into the damaged pipe, inflated against the pipe walls, and cured to form a seamless, jointless pipe-within-a-pipe. This method repairs cracks, fractures, displaced joints, root ingress points, and minor structural defects without [excavation](/services/excavations-new-drains). The cured liner has a smooth internal surface that improves flow, resists root penetration, and prevents future ground water infiltration. Relining is suitable for pipes from 100mm to 600mm in diameter, including domestic waste pipes, surface water drains, and combined drainage systems. It works on clay, PVC, concrete, cast iron, and [pitch fibre pipe](/services/pitch-fibre-repairs) materials. The process is significantly faster, cleaner, and less expensive than traditional [excavation](/services/excavations-new-drains) and pipe replacement — particularly for drains running under driveways, patios, buildings, or landscaped gardens where the cost of reinstatement would be substantial. ## What Happens When Damaged Drains Are Left Unrepaired? Cracked or displaced drain pipes do not heal. Every week left unrepaired, ground water infiltrates through the defects, washing soil particles into the pipe. This process — called erosion voids — gradually removes the soil supporting the pipe, your driveway, your patio, or your foundations. Tree roots exploit cracks and displaced joints aggressively. A hairline fracture provides enough moisture signal for roots to enter and expand. Within months, a minor joint displacement becomes a root-packed obstruction causing recurring blockages and further pipe damage. Leaking drains in clay soil cause ground heave. Leaking drains in sandy soil cause subsidence. Both scenarios can damage your property's foundations. Insurance claims for subsidence require evidence that the drainage system was properly maintained — unrepaired known defects will void your claim. Traditional [excavation](/services/excavations-new-drains) to replace a damaged drain section under a driveway can cost £4,000–£12,000 including reinstatement. The same repair using relining typically costs £1,500–£4,000 with no reinstatement required. Delaying the decision doesn't reduce the cost — it increases it. ## How We Re-Line Your Drain 1 ### CCTV Pre-Survey We inspect the drain using HD cameras to confirm the location, extent, and nature of the damage. This determines whether relining is viable and identifies any preparation work needed. 2 ### Drain Preparation We clean the pipe thoroughly using [high-pressure jetting](/services/high-pressure-jetting) to remove debris, scale, roots, and deposits. The pipe must be clean for the liner to bond properly. Root cutting is performed if necessary. 3 ### Liner Installation The resin-saturated liner is pulled or inverted into position inside the pipe, precisely covering the damaged section. The liner is inflated against the pipe walls using air pressure to ensure full contact. 4 ### Curing The resin cures to form a rigid, structural pipe-within-a-pipe. Curing methods include ambient cure (natural hardening over several hours) or UV/hot water cure (accelerated curing in under an hour) depending on the specification. 5 ### Post-Lining CCTV Check We reinspect the lined section with CCTV to confirm the liner is fully bonded, free of wrinkles or defects, and that all lateral connections are open and flowing correctly. You receive the footage and a written completion report. ## Why Relining Beats Excavation ### No Excavation Your driveway, patio, garden, and property remain untouched. No diggers, no spoil heaps, no reinstatement costs, no weeks of disruption. ### 50-Year Design Life Cured-in-place liners are designed to last 50+ years. The seamless, jointless construction eliminates the weak points that caused the original failure. ### Improved Flow The smooth internal surface of the cured liner reduces friction and improves water flow compared to the original pipe — particularly in older clay and cast iron systems. ### Root-Proof The seamless construction eliminates joints — the primary entry point for tree roots. Once lined, roots cannot penetrate the pipe. ### Cost-Effective Relining typically costs 40–60% less than excavation and replacement when reinstatement costs are factored in. For drains under buildings or structures, the savings are even greater. ### Fast Completion Most domestic relining jobs are completed in a single day. Your drainage system is back in service within hours, not weeks. ## No-Dig Drain Re-Lining: The Technical Process Step by Step Cured-in-place pipe (CIPP) lining installs a resin-saturated felt or fibreglass sleeve inside your existing drain, then cures it in place to form a structural, jointless new pipe. The process is governed in the UK by BS EN ISO 11296-4 and is the same trenchless rehabilitation method used by Wessex Water, Thames Water and the major civil-engineering contractors. Step 1 — Pre-lining [CCTV survey](/services/cctv-drain-surveys). We push a 1080p camera through the drain to confirm the defect type, pipe diameter, length to be lined, position of lateral connections, and whether any deformation or collapse rules out lining. The footage is reviewed against WRc condition codes and used to specify the liner thickness (typically 3–6 mm) and resin system. Step 2 — [High-pressure jetting](/services/high-pressure-jetting) and root removal. The pipe is cleaned at 3,000–4,000 psi to remove scale, fat, debris and root mass. Roots are cut back using a chain-flail or robotic cutter. A clean, dry, abrasion-free pipe wall is essential for the resin to bond — this preparation stage is what separates a 50-year repair from a 5-year one. Step 3 — Resin saturation (wet-out). The felt liner is impregnated with a two-part thermosetting resin under controlled conditions. We use three main resin systems depending on the job: epoxy resin (low odour, low shrinkage, the standard for domestic potable-water-adjacent drainage), polyester resin (fast cure, cost-effective for surface-water drains), and silicate / vinyl-ester resin (chemical-resistant, used for commercial and industrial effluent lines). Pot life after wet-out is typically 60–120 minutes, so installation begins immediately. Step 4 — Inversion or pull-in-place installation. Inversion uses water or air pressure to turn the liner inside-out as it travels down the pipe, leaving the resin face pressed against the host pipe wall. Pull-in-place draws the liner through using a winch cable, then inflates a calibration hose inside it to press the resin outward. Pressure is held at 0.4–0.8 bar throughout curing to maintain wall contact. Step 5 — Curing. Three curing methods are used in UK domestic work. Ambient cure: the resin hardens naturally at ground temperature over 4–12 hours — lowest cost, longest downtime. Hot-water cure: water is circulated through the inflated liner at 60–80 °C, cutting curing time to 90–180 minutes and giving tighter quality control. UV light cure: a UV light train is drawn through the liner curing fibreglass-reinforced resin in 20–60 minutes, with the highest finished-pipe strength and same-day reinstatement. Step 6 — Lateral reinstatement. Once cured, any branch connections covered by the liner are reopened from inside the pipe using a robotic cutter with a tungsten-tipped bit and on-board camera. Each lateral is cut, inspected and verified flowing before the equipment is withdrawn. Step 7 — Post-lining CCTV verification. A final HD survey records the finished liner end-to-end, confirms full circumferential contact, absence of wrinkles or fins, and that every lateral has been reinstated cleanly. You receive the footage, a written sign-off report and a written guarantee — typically 10–25 years on workmanship, with a 50-year design life on the liner itself. When relining is and isn't viable. Lining works for cracks, fractures, displaced joints up to ~20 mm, open joints, root ingress points, infiltration, encrustation and pitch-fibre deformation up to ~40%. It is not suitable for fully collapsed pipes, sections with more than 40% loss of cross-section, or pipes with severe back-fall — those require localised [excavation](/services/excavations-new-drains). The pre-lining [CCTV survey](/services/cctv-drain-surveys) gives a definitive answer. ## No-Dig Re-Lining vs Traditional Excavation When your drain is damaged, you have two routes: open up the ground and replace the pipe, or repair it from the inside using CIPP lining. Here is how the two options actually compare on the metrics that drive the decision. Factor No-Dig CIPP Re-Lining Traditional Excavation Excavation required None — installed through an existing manhole or rodding eye Full trench dug along the length of the failed pipe Typical domestic cost £1,000 – £4,000 (patch from ~£500) £4,000 – £12,000+ including reinstatement Reinstatement (driveway / patio / landscaping) Not required Required — block paving, tarmac, turf, concrete, walls Time on site 4–8 hours (most domestic jobs done in a day) 2–7 days depending on depth and access Disruption to property Minimal — no spoil heap, no diggers, no closed driveway Significant — heavy plant, exposed trench, restricted access Suitability under buildings / extensions Yes — primary use case for CIPP Rarely viable without underpinning or structural works Design life of repair 50+ years (BS EN ISO 11296-4) 50+ years for new pipe — but joints remain a weakness Joint failure risk after repair Eliminated — liner is jointless Same as original pipe — joints every 1–2 m Building regulations / water authority consent Generally not required for like-for-like repair Often required, especially near public sewers Typical guarantee 10–25 years material + workmanship 1–10 years workmanship Cost ranges are for typical 100–225 mm domestic drains in Dorset, Hampshire and Surrey, 2026. Your fixed price is confirmed after the pre-lining CCTV survey. ## Frequently Asked Questions How much does drain relining cost? How long does drain relining take? Can relining fix tree root damage? Is drain relining as good as a new pipe? Can you reline drains under my house? Will relining reduce my pipe diameter? What about pitch fibre pipes? What guarantee do you offer? Do I need a CCTV survey before relining? What areas do you cover? ### Related Services - [Blocked Drains](/services/blocked-drains) - [CCTV Drain Surveys](/services/cctv-drain-surveys) - [Pitch Fibre Repairs](/services/pitch-fibre-repairs) - [Excavations & New Drains](/services/excavations-new-drains) ### Service Areas - [Bournemouth](/areas/bournemouth) - [Poole](/areas/poole) - [Christchurch](/areas/christchurch) - [Dorchester](/areas/dorchester) - [Weymouth](/areas/weymouth) - [Wimborne](/areas/wimborne) - [Wareham](/areas/wareham) - [Dorset](/areas/dorset) - [Swanage](/areas/swanage) - [Bridport](/areas/bridport) ## Ready to Solve Your Drainage Problem? No call-out fees. No hidden charges. Speak to our team today and get a free, no-obligation estimate. [Request a Free Estimate](/contact)[03303 330401](tel:03303330401) [JD Drainage ](/) Professional [drainage services](/services) across the South of England. 25 years of experience. No call-out charge. All work guaranteed. Read our [customer reviews](/reviews). 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