# What Is Trenchless Pipe Repair? Methods and Limits Canonical: https://reliancetrenchless.com/en-CA/resources/what-is-trenchless-pipe-repair Language: English Updated: 2026-10-19 ![Reliance repair-packer gallery view showing the body, end fittings and wheels.](https://reliancetrenchless.com/assets/img/Products/RepairPackers/optimized/RepairPackers8-1200.webp) Gallery photograph of one wheeled repair-packer configuration. The pictured wheels and fittings do not establish the accessories included for a particular order. · [4](https://reliancetrenchless.com/en-CA/products/repair-packers#product-guide "Reliance repair packers — photograph and product details") Trenchless pipe repair rehabilitates a pipe from inside, reducing the need to excavate along its route. Options include localized repairs and lining a longer section. Inspection, access and the selected method determine how much digging is still needed. For owners and contractors comparing sewer-repair methods. Reliance supplies localized-repair products; full-length lining and pipe bursting are explained as industry context. ## 1. What does trenchless mean? Trenchless describes methods that work through access points rather than opening a continuous trench along the pipe. Repair can treat a local defect or rehabilitate a longer section. Replacement is a different option: pipe bursting breaks the existing pipe while drawing in a new pipe. These methods should not be treated as interchangeable. [1](https://www.nassco.org/trenchless-technology/rehabilitation/pipe-rehabilitation "NASSCO — Pipe Rehabilitation: lining, spot repairs and replacement methods") Sources: - [NASSCO — Pipe Rehabilitation: lining, spot repairs and replacement methods](https://www.nassco.org/trenchless-technology/rehabilitation/pipe-rehabilitation) ## 2. Can a sewer pipe be repaired without digging? Yes, some sewer defects can be repaired internally through existing access. NASSCO describes joint and spot repairs that avoid full-length lining or excavation. But trenchless does not mean every project needs no digging: pipe bursting generally requires excavation, and some methods require excavated service reconnections. Ask which access points and connections are included in the proposed work. [1](https://www.nassco.org/trenchless-technology/rehabilitation/pipe-rehabilitation "NASSCO — Pipe Rehabilitation: lining, spot repairs and replacement methods") Sources: - [NASSCO — Pipe Rehabilitation: lining, spot repairs and replacement methods](https://www.nassco.org/trenchless-technology/rehabilitation/pipe-rehabilitation) ## 3. How do point repair and pipe lining differ? ![Two separate pipe sketches show a localized treatment area and a longer continuous treatment section.](https://reliancetrenchless.com/assets/img/Guides/sectional-vs-full-length-repair.svg) Conceptual diagram, not to scale. 1: a localized treatment area. 2: a defined longer lining section. Green marks scope only, not product dimensions or structural capacity. A localized repair can also use a cured-in-place process; these sketches do not make point repair and CIPP mutually exclusive. Point repair describes the area treated: a defined local defect. Cured-in-place pipe \(CIPP\) describes a method: resin-impregnated material is positioned inside the pipe and cured. CIPP can therefore be used for a local repair or a longer lining section. An internal mechanical sleeve is another localized method and does not use resin curing. [1](https://www.nassco.org/trenchless-technology/rehabilitation/pipe-rehabilitation "NASSCO — Pipe Rehabilitation: lining, spot repairs and replacement methods") Compare the distribution of defects and the proposed treatment boundaries before choosing equipment. A local repair and a continuous lining proposal may cover different work. The linked comparison guide helps organize access, connections, flow management and acceptance questions. Sources: - [NASSCO — Pipe Rehabilitation: lining, spot repairs and replacement methods](https://www.nassco.org/trenchless-technology/rehabilitation/pipe-rehabilitation) ## 4. What should be checked before choosing a repair? ![Four records connect to an original video: asset identity, survey direction, distance and time reference.](https://reliancetrenchless.com/assets/img/Guides/cctv-review-record-fields.svg) Conceptual diagram, not to scale. 1: asset identity. 2: survey direction. 3: distance reference and unit. 4: video timestamp. Keep them connected to the original recording and context. This is an editorial record map, not a customer CCTV frame, calibrated measurement or inspection result. Start with a CCTV inspection record that identifies the pipe, defect locations, connections and obstructions. NASSCO distinguishes visual inspection from dimensional techniques such as laser and sonar profiling. Keep measured dimensions separate from visual estimates. The inspection should support a project-specific review of pipe condition and access; a single screenshot cannot settle the method choice. [2](https://www.nassco.org/trenchless-technology/assessment "NASSCO — Assessment: CCTV and dimensional inspection") Sources: - [NASSCO — Assessment: CCTV and dimensional inspection](https://www.nassco.org/trenchless-technology/assessment) ## 5. Which Reliance products support localized repair? Reliance’s point-repair range includes internal repair sleeves, repair packers, fiberglass and resin. Review their product pages for the proposed configuration and supporting documents. For a product enquiry, share the measured pipe size, defect information and access conditions; a product quotation and a contractor’s complete installed-repair quotation cover different scopes. [3](https://reliancetrenchless.com/en-CA/products/point-repair-systems "Reliance localized point-repair products") Sources: - [Reliance localized point-repair products](https://reliancetrenchless.com/en-CA/products/point-repair-systems) ## Sources 1. [NASSCO — Pipe Rehabilitation: lining, spot repairs and replacement methods](https://www.nassco.org/trenchless-technology/rehabilitation/pipe-rehabilitation) 2. [NASSCO — Assessment: CCTV and dimensional inspection](https://www.nassco.org/trenchless-technology/assessment) 3. [Reliance localized point-repair products](https://reliancetrenchless.com/en-CA/products/point-repair-systems) 4. [Reliance repair packers — photograph and product details](https://reliancetrenchless.com/en-CA/products/repair-packers#product-guide) 5. [Further reading: point repair vs full-length CIPP](https://reliancetrenchless.com/en-CA/resources/sectional-point-repair-vs-full-length-cipp) 6. [Further reading: CCTV information for point repair](https://reliancetrenchless.com/en-CA/resources/cctv-inspection-information-before-point-repair) ## What to include in your enquiry - Pipe material, measured internal diameter and defect locations. - Original inspection record, access points and nearby connections. - Proposed repair scope, project location and requested product quantities. [Discuss localized repair products](https://reliancetrenchless.com/en-CA/contact#product=RepairPackers) The contact form opens an email draft for the visitor to review and send; it does not confirm delivery.