CIPP rehabilitation of vertical sewer stacks

When the stack is beyond local repairs

In many buildings, problems in vertical stacks don’t appear all at once — they build up over time.
First a leak, then another, then smells, then recurring blockages…

When this happens, it’s usually no longer a local issue, but degradation along several meters of the stack.

That’s exactly where structural rehabilitation with CIPP makes sense — because it solves the problem continuously, not point by point.

What we typically find in real inspections

From our CCTV inspections, it’s very common to see:

• cracks distributed along the pipe

• open joints allowing water leakage between floors

• areas with material loss

• poor connections between branches and the stack

• recurring leaks affecting multiple apartments

And this is the key point: it’s rarely just one issue.
Most of the time, it’s a combination of defects along the entire stack.

How CIPP lining works

The idea is simple: create a new pipe inside the existing one.

A fiberglass liner impregnated with resin is installed inside the stack and then cured using UV/LED technology.

Once completed, this creates a continuous new pipe that:

• restores structural strength

• eliminates cracks and leaks

• reinforces the full length of the stack

• improves hydraulic performance

This is not just a repair.
It is effectively a new pipe within the old one.

Why this solution makes sense in buildings

The traditional alternative involves opening walls across multiple floors — which quickly becomes a major construction issue, both technically and socially.

With CIPP:

• there’s no need to open multiple apartments

• intervention time is significantly reduced

• disruption to residents is minimized

• the entire stack is solved in one intervention

In practice, it turns a complex situation into a controlled one.

Real durability (not just theory)

When properly executed, CIPP rehabilitation extends the lifespan of the stack by decades.

This is a structural solution, designed to withstand long-term mechanical and chemical loads — not just a temporary fix.

When CIPP is the right choice

Not every case requires this solution — and it’s important to be clear about that.

CIPP is recommended when:

• issues are present לאורך several meters

• the pipe shows structural degradation

• leaks persist after local repairs

• a long-term and stable solution is required

If it’s just a localized leak, epoxy may be enough.
But if the stack is compromised as a whole, then CIPP becomes the right approach.

Preparation: what makes the result reliable

Before installation, proper preparation is essential:

• detailed CCTV inspection

• thorough pipe cleaning

• removal of internal obstructions

• real assessment of pipe condition

Without proper preparation, there is no quality result — simple as that.

Where we apply this solution

We regularly work in:

• residential buildings and older condominiums

• private housing

• commercial units

• hotels and short-term rentals

Always based on technical evaluation — not assumptions.

A structural solution for non-localized problems

When a stack starts failing in multiple areas, continuing with local repairs only delays the inevitable.

CIPP rehabilitation allows you to solve the issue properly, without turning the building into a construction site for weeks.

If you’re unsure about the condition of your stack, we always start the same way: inspect first, decide after.

Contact us

Based on CCTV inspection, we help determine whether epoxy or CIPP is the right solution — without forcing either option.

Call +351 930 650 707 and we’ll review your case with you.