How to Price Pipe Relining: CIPP, Patch Lining and Excavation Alternatives

Quick Answer: Pipe relining (cured-in-place pipe, or CIPP) costs £140–£280/m for full-length lining of 100–150mm clay or cast iron drains, and £350–£900 for a localised patch repair (typically 0.5–1m). Total job cost depends heavily on access (typically £150–£400 for chamber access, £600–£2,000 if a temporary access pit must be excavated), CCTV pre-survey (£120–£280), and dewatering or root cutting before lining (£150–£500). A 10m drain reline costs £1,500–£3,500 typical, against £3,000–£8,000 for the same drain replaced by excavation — making relining cost-effective on most domestic drains where it is technically suitable.

Summary

CIPP (cured-in-place pipe) relining is the no-dig alternative to drain replacement that has become the dominant repair technique for UK private drains in the last 15 years. The economics are compelling: for a 10–15m run, CIPP is 40–60% cheaper than excavation, takes 1–2 days instead of 5–10, and produces no spoil or surface damage. The technique cures a resin-impregnated felt or fibreglass liner in place inside the existing pipe using hot water, steam, ambient cure or UV, leaving a smooth structural pipe within the original pipe.

The pricing variability comes from access, condition and configuration. CIPP needs an entry point — usually an existing manhole or inspection chamber. If the host pipe runs under a building with no chamber at either end, an access pit is needed (£600–£2,000 to excavate). If the pipe is partially collapsed, root-blocked, or has displaced joints, pre-cleaning costs add £150–£500 before lining can begin. If multiple branches or junctions need to be re-cut after lining, that's £150–£300 per branch.

The other commonly mis-priced area is the survey. A reline cannot be quoted accurately without a CCTV survey first, and the survey itself is £120–£280. Many quotes are given on the basis of the customer's description of the problem, then revised on site once the CCTV reveals more damage than expected. Always pre-survey unless the customer accepts a quote that explicitly excludes survey-uncovered work.

Key Facts

• Full-length CIPP relining — £140–£280/m run (100–150mm pipe diameter)
• Patch repair (localised CIPP) — £350–£900 per patch of 0.5–1m
• CCTV pre-survey — £120–£280 typical (with report and recording)
• Chamber access (existing) — £150–£400 included in lining day rate
• Access pit excavation (where required) — £600–£2,000 plus reinstatement
• Root cutting (mechanical) — £150–£400 per visit with cutter rig
• High-pressure water jetting — £180–£450 for typical drain pre-clean
• Junction reinstatement (cut after lining) — £150–£300 per branch
• Reduction in pipe internal diameter post-line — typically 4–6mm for CIPP, 2–4mm for thin-wall UV liner
• Cure method — ambient (24+ hours), hot water (2–6 hours), steam (1–3 hours), UV (30–90 min)
• Liner material — felt (saturated with epoxy or polyester resin) or fibreglass (UV cure)
• Design life — 50+ years for fibreglass UV-cure; 30–50 years for felt CIPP
• Diameter range (domestic) — 100mm and 150mm most common; 75mm/225mm/300mm also available
• Long-radius bends — can be lined; tight bends (90° elbow) usually require an open-cut repair
• Vertical pipes (soil stack) — can be lined; specialist vertical liner technique
• Insurance buy-in — many home insurance policies cover CIPP under "trace and access" or "drain replacement" cover

Quick Reference Table — CIPP Pricing by Job Type

Detailed Guidance

When CIPP works and when it doesn't

CIPP is suitable when:

• The host pipe is structurally continuous (no major collapse)
• Internal diameter is consistent (no severe ovalisation)
• Bends are long-radius (no 90° elbows)
• An access point exists at one or both ends
• The defect is corrosion, hairline fractures, displaced joints, root infiltration, or soft-spots

CIPP is NOT suitable when:

• The pipe is collapsed (>30% structural failure)
• The pipe has changed direction or alignment significantly
• Severe back-falls (negative gradient) — lining preserves geometry
• Multiple unknown junctions (high re-cut cost)

A pre-survey resolves these questions. Lining inappropriately on a partly collapsed pipe leaves the customer with a thin-wall liner sitting in a void — fails within months.

CCTV survey — the price-defining first step

A CCTV survey is essentially mandatory before a reline quote. Cost £120–£280 typically and includes:

• Push-rod or wheeled camera through the run
• Video recording and still images
• Report identifying defects (fractured, cracked, displaced, root, etc.)
• Recommendation (line, patch, replace, monitor)

The survey report should reference WRc Sewerage Risk Management coding (e.g. "FC = fracture circumferential", "DEF = deformed", "JDL = joint displaced large") — this is the UK standard coding for drain defects.

Some companies offer "free survey with quote" — meaning the survey cost is recovered in the labour rate for the work. Customers should be aware: a free survey is rarely free; it's bundled into a possibly higher line price.

Patch vs full reline — when to use which

Patch repair (localised CIPP) — 0.5–1m of fibreglass-resin liner installed at a specific defect using a packer (a cylindrical inflatable bag that holds the liner against the pipe wall during cure). Used for:

• Single fracture
• Single displaced joint
• Localised root infiltration
• Cost: £450–£1,100 typical per patch

Full reline — entire run from chamber to chamber. Used for:

• Multiple defects along the length
• General age-related decay (Victorian salt-glazed clay, 100+ year life cycle)
• Where a patch would be a temporary fix
• Cost: £140–£280/m run

Rule of thumb: if there are 3+ defects in a 10m run, full reline is cheaper than 3+ patches. If 1 defect, patch is cheaper.

Pre-cleaning — the often-skipped cost

Most drains needing relining are not clean enough for the liner to seat correctly. Pre-cleaning options:

• High-pressure water jetting — £180–£450 for typical domestic drain clean. Removes scale, soft blockages, sediment.
• Mechanical root cutting — £150–£400 with a rotating cutter rig (Picote, RIDGID K-7500). Removes root masses.
• De-scaling (cast iron or concrete pipes) — £200–£500 with chain-flail or descaling head.

A line installed over a poorly cleaned host pipe leaves a wavy or wrinkled line that traps debris within months. Always pre-clean.

Access — chamber vs excavated pit

Most domestic drains have a manhole or inspection chamber at one or both ends. CIPP can be installed from a single chamber if the run length and liner type allow.

If no chamber exists, an access pit must be excavated:

• Find the pipe (CCTV-located or hand-dig)
• Excavate down to pipe level (often 0.6–1.5m deep)
• Cut and remove a section of pipe to allow liner introduction
• After lining cure, reconnect (proprietary collar) and backfill
• Reinstate surface (concrete, paving, lawn)

Cost for access pit: £600–£2,000 depending on depth, surface type and disposal.

Branch reinstatement after lining

When a main run is lined, any branches connecting to it (e.g. downstairs WC connecting to the main soil run) are sealed by the liner. They must be cut back open from inside, using a robotic cutter (Picote SP-100, IBAK Lateral Cutter):

• Robot cutter on tracks within the lined main pipe
• Locates branch by camera and pre-measured distance
• Cuts the liner to match the branch profile
• Cost: £150–£300 per branch reinstated

Customers don't usually realise this; quotes that omit branch costs run over budget.

UV vs felt — modern vs traditional

Two main liner technologies:

Felt (with epoxy or polyester resin) — traditional, most common in UK domestic. Liner is impregnated with resin on site, inverted into the host pipe, cured with hot water or steam. Cure time 2–6 hours. Cost: £140–£200/m.

Fibreglass UV-cure — modern, faster. Liner is impregnated and pre-prepared at factory; pulled into pipe; cured with UV light train. Cure time 30–90 minutes. Better dimensional stability, longer design life. Cost: £180–£280/m.

UV is more expensive supply but faster on site, so total job cost is often similar. UV is preferred on commercial work and increasingly on premium domestic. Felt remains the standard for most UK domestic drains.

Insurance — when reline costs are covered

Many home insurance policies include drain repair under "trace and access" or "underground services" cover. Typical limit £3,000–£10,000. Customers should be encouraged to claim:

• Get a written reline quote with CCTV report
• Submit to insurer with claim form
• Insurer often pays direct contractor or reimburses customer

Many drain repair specialists work directly with insurers and have established workflows. This can take a £3,500 quote to £0 cost to the customer with insurance excess only.

Frequently Asked Questions

How much is a typical drain reline for a UK semi?

10m run from manhole to road connection — £1,500–£3,500 fully done. Smaller patches: £450–£1,100. Larger or multi-branch jobs: £4,000–£8,000.

Is relining as good as replacing the drain?

Structurally yes for the design life of the liner (30–50+ years). The lined pipe gives a smooth bore, eliminates root re-infiltration, and seals leaks. Replacement is preferred only when the pipe is structurally collapsed, has severe alignment issues, or when accessing related work makes excavation unavoidable.

Will my insurance pay for a drain reline?

Most household policies include drain cover under "trace and access" or similar. Limit typically £3,000–£10,000. Get a written quote and CCTV report, submit to insurer.

Can I reline a cast iron soil stack?

Yes. Vertical CIPP for soil stacks is a specialist technique using a fixed-orientation liner. Cost roughly equivalent to horizontal lining per metre, plus additional labour for vertical access.

How long does the liner last?

30–50 years for felt CIPP. 50+ years for fibreglass UV-cure. Design life usually exceeds the customer's ownership of the property.

Regulations & Standards

• Building Regulations Approved Document H — drainage and waste disposal

• BS EN 13566 series — plastic piping systems for renovation of underground non-pressure drainage and sewerage networks (multiple parts)

• BS EN 752:2017 — drain and sewer systems outside buildings

• BS 8005 series — sewerage code of practice (legacy)

• WRc Sewerage Risk Management coding — UK standard for defect classification

• Water Industry Act 1991 — public sewer regulation; private drains transferred to water companies under Drainage and Water Authority Transfer (England and Wales) Order 2011

• Manual for the Condition Assessment of Sewers and Manholes (MSCC5) — UK industry coding manual

• BS 6700:2006+A1:2009 — design, installation, testing and maintenance of services supplying water (cross-reference)

• WRc plc — Sewerage Risk Management — UK industry technical body

• BPF Pipes Group — CIPP — UK industry body for plastic pipe systems

• Building Regulations Approved Document H — drainage requirements

• HSE Confined Spaces Regulations — relevant for chamber entry

• Water UK — Drains and Sewers — public sewer policy guidance

• blocked drain diagnosis: rodding, jetting and CCTV survey

• structural repair pricing including drain-related subsidence

• building regulations process for drainage works

• dropped kerb work that may affect underground services