CCTV Pipe Inspection in Lisbon

CCTV pipe inspection in Lisbon

A leak, recurring blockage or damp patch does not always reveal the exact location of the problem. In Lisbon’s residential buildings, condominiums and commercial properties, wastewater and rainwater pipes frequently run through walls, ceilings, floors and shared technical areas. Without inspecting the inside of the pipe, identifying the true origin of the problem can be difficult.

REVIPOX provides professional CCTV pipe inspections in Lisbon using high-definition camera systems. We inspect wastewater pipes, vertical stacks, rainwater downpipes, underground drains, branch connections and other drainage networks.

Our purpose is not simply to record footage. We aim to identify the type and location of the defect and provide the technical information needed to determine whether the pipe requires cleaning, a localised repair, internal coating, CIPP lining or another appropriate solution.

Diagnose the problem before opening walls or floors

The place where water becomes visible may be some distance from the actual leak. Water can travel through slabs, walls and service ducts before appearing inside an apartment or commercial unit, sometimes leading to unnecessary work in the wrong area.

A CCTV inspection allows the internal condition of the pipe to be examined directly. Where access and pipe conditions permit, it can reveal open joints, cracks, breakages, deformation, perforations, root ingress, foreign objects and deposits affecting the flow.

This reduces uncertainty and helps ensure that any subsequent intervention is directed at the actual source of the problem.

Wastewater, stack and rainwater pipe inspections

Lisbon’s buildings contain drainage networks from different construction periods, often combining original pipes with sections replaced during later renovation work. These transitions can result in changes of material or diameter, poorly executed connections, vulnerable joints and difficult access points.

CCTV inspection can be used for:

• Wastewater stacks and rainwater downpipes;
• Underground drains and collectors;
• Kitchen and bathroom branch pipes;
• Pipes connecting inspection chambers;
• Condominium drainage systems;
• Hotels, offices, shops and commercial premises;
• Recently installed or renovated drainage networks requiring verification.

Each inspection is planned according to the available access points and the technical issue that needs to be clarified.

What we assess inside the pipe

Our assessment goes beyond confirming whether water can still flow through the pipe. A drainage line may remain operational while already presenting leakage, defective joints or significant deterioration.

During the inspection, we assess the continuity and geometry of the pipe, the condition of its joints, the presence of obstacles and any visible signs of deterioration. We also determine whether the defect is localised or affects a longer section of the network.

The inspection may identify:

• Cracks, breakages and perforations;
• Open, displaced or deteriorated joints;
• Water infiltration;
• Deformation, ovalisation or loss of internal section;
• Roots and foreign materials;
• Deposits and obstructions;
• Incorrectly executed connections;
• Changes in pipe material or diameter;
• Signs of leakage or loss of watertightness;
• Conditions that may restrict trenchless rehabilitation.

This assessment helps distinguish a cleaning problem from a defect requiring repair or rehabilitation.

When cleaning is required before inspection

For CCTV footage to provide reliable technical information, the internal surface of the pipe must be sufficiently visible. Wastewater, grease, sludge, scale and other deposits can conceal joints, cracks and defects.

Where necessary, technical cleaning may be recommended before the inspection. Cleaning does not repair the pipe; its purpose is to remove material obstructing the camera’s view and allow a more accurate assessment.

Cleaning can also reveal defects that were previously hidden beneath accumulated deposits.

Technical inspection reports

Where documentation is required, the service can include a technical report, photographs of the relevant defects and conclusions regarding the condition of the inspected sections.

A technical report can support:

• Condominium and property management decisions;
• Insurance-related cases;
• Engineering and renovation projects;
• Inspections before or after construction work;
• Planning of pipe repairs or rehabilitation;
• Technical documentation of defects and their location.

The conclusions apply only to the sections that were accessible and visible during the inspection. If an obstruction, deformation or lack of access prevents the camera from advancing, this limitation is documented and considered in the assessment.

Locating underground defects and hidden chambers

In suitable situations, CCTV inspection can be combined with a transmitting sonde and surface locator. This makes it possible to estimate the position of the camera head or a specific point within the pipe from above ground.

It is particularly useful for locating hidden inspection chambers, blockages, changes in direction or defects beneath floors, external areas and other building elements.

Accuracy depends on depth, surrounding materials and site conditions, but this method can significantly reduce the area that needs to be opened.

An inspection focused on the right solution

REVIPOX specialises in internal pipe repair and rehabilitation. During the inspection, we therefore assess whether the existing pipe may be suitable for a trenchless intervention.

Depending on the findings, the recommended solution may include:

• Technical cleaning or blockage removal;
• Localised repair;
• Internal epoxy coating or sealing;
• Continuous CIPP lining;
• Conventional replacement when the pipe cannot be safely rehabilitated internally.

Not every pipe can or should be rehabilitated using the same method. Pipe material, diameter, bends, branch connections, defect extent and structural condition all influence the technical decision.

CCTV pipe inspections for homes, condominiums and businesses

REVIPOX carries out technical pipe inspections in apartments, houses, condominiums, office buildings, hotels, shops and other commercial properties throughout Lisbon.

If you are dealing with a leak, recurring blockage, suspected pipe failure or need to assess a drainage line before carrying out repair work, a CCTV inspection provides the evidence needed to make a safer technical decision.