Trenchless Pipe Rehabilitation in Lisbon

Trenchless Pipe Rehabilitation in Lisbon

Replacing old or damaged pipes — especially in occupied buildings — can be expensive, time-consuming, and disruptive. That’s why Servilar offers trenchless pipe rehabilitation in Lisbon, using Cured-in-Place Pipe (CIPP) technology: a modern, long-lasting, and non-invasive solution for sewer and stormwater drainage systems.

This advanced method allows us to renew the inside of existing pipes without breaking floors, walls, or opening trenches, delivering a fast, clean, and durable result — often in just a single day.

How trenchless relining with resin-impregnated liner works

The process involves inserting a flexible liner saturated with epoxy or polyester resin into the damaged pipe via an access point. Once in position, the liner is inflated so that it conforms to the interior shape of the existing pipe. The resin is then cured — using hot water, steam, or UV light — forming a new, seamless pipe within the old one, highly resistant and watertight.

The trenchless pipe rehabilitation process begins with a detailed video inspection using high-definition cameras to assess the internal condition of the pipe and determine the best intervention strategy. Next, the pipeline is carefully prepared using mechanical rotary brushes and robotic cleaning systems, which remove sediment, grease, scale, and debris, leaving the surface clean and ready for the new liner.

The next stage, known as wet-out, involves impregnating a flexible textile liner with a two-component epoxy resin, which is then inserted into the host pipe using air pressure (inversion method) or pull-in-place. Once in position, the liner is inflated to fit tightly against the inner walls of the existing pipe, and curing begins — either at ambient temperature, with hot water or steam, or using the latest UV light curing technology.

UV pipe relining (Cured-in-Place Pipe – CIPP) is the modern, no-dig evolution of traditional methods. Instead of relying on heat from water or steam, this process cures the resin using ultraviolet light, resulting in extremely fast curing times — as little as 20 minutes — and less risk of human error, since the liners are pre-impregnated and require no resin mixing on-site.

The UV-cured liners are glass fiber reinforced, allowing them to navigate 90-degree bends and lateral connections while providing a durable, long-lasting solution with excellent hydraulic flow characteristics. In many cases, the pipe is ready to use again within 1 to 3 hours from the start of the process.

Because the UV method requires less equipment and faster setup, it is particularly well-suited for high-traffic or space-constrained areas such as roads, commercial buildings, railways, airports, or confined mechanical rooms — delivering a cleaner, faster, and more reliable result.

Where can this solution be used?

Trenchless relining is ideal for:

• Vertical or horizontal sewer lines in apartment buildings or condominiums

• Stormwater drainage pipes with leaks or cracks

• Pipes buried in walls or floors, where replacement would require demolition

• Main sewer lines in hotels, schools, hospitals, and commercial buildings

• Industrial wastewater systems exposed to heat or chemical waste

Note: This method is best suited for pipes with diameters starting at 75mm, and up to about 300mm. It is not applicable to small household pipes like washbasin drains.

Signs that relining might be needed

• Frequent blockages that return even after cleaning

• Presence of roots inside the sewer line

• Hidden leaks or water damage in neighbor’s ceiling

• Strong sewage odors in areas that aren’t regularly used

• Infiltrations in garages, technical ducts, or suspended ceilings

Advantages of trenchless pipe rehabilitation

• No demolition: no need to break concrete, tiles, or walls

• Lower overall cost: avoids reconstruction labor and materials

• Fast turnaround: in many cases, the service is completed in one day

• Long lifespan: cured liners can last 50+ years

• Low impact: ideal for occupied buildings with minimal disruption

How do we assess if your system is suitable?

Before we begin, Servilar carries out a video inspection using a high-definition camera to:

• Check the internal condition of the pipe

• Verify diameter and usable length

• Detect cracks, collapses, or misalignments

• Confirm if a continuous liner can be applied

Based on the inspection, we prepare a detailed technical plan and quote with all steps included — no surprises.

Available throughout the Greater Lisbon area

We offer trenchless pipe rehabilitation services in Lisbon and across the metropolitan area, including: Amadora, Odivelas, Loures, Oeiras, Cascais, Almada, Seixal, Barreiro, Sintra, Mafra, Vila Franca de Xira, and surrounding regions.

Book your drainage pipe inspection today and find out if trenchless rehabilitation is the right solution.
Servilar combines advanced technology with technical expertise to deliver fast, clean, and long-lasting results.