Sewerage inspection

A sewerage inspection is needed when odors appear, “gurgling”, trap seal loss, recurring clogs, or there are doubts about slopes and details. We check the system as an engineering one: routes, stacks, venting, check valves and actual operation under real conditions.

What we check

  • Slopes and correctness of routes (where visually accessible and by details).
  • Stack venting and the real reasons behind odors / air suction.
  • Traps, drains, water seals — why they fail and how to fix it properly.
  • Check valves, problematic details and potential clog points.
  • Sound insulation/vibration of stacks (critical for premium interiors).
  • Relation to ventilation and room pressure (sometimes odor is an air-balance issue).

Odor causes — without myths

Wrong pressures

If supply/exhaust are unbalanced, odors can be pulled even with proper sewerage.

Poor stack venting

Venting mistakes lead to trap seal loss and “gurgling”.

Detail errors

Wrong transitions, extra bends, incorrect slopes, missing cleanouts.

What you get

  • Conclusion: the source of the problem and confirmation by observations.
  • A list of required detail upgrades and recommendations on materials/schemes.
  • A prioritized plan: what to fix quickly and what requires intervention.
  • Recommendations on clog prevention and correct operation.
  • If odor is related to ventilation — we’ll show where the imbalance is and what to do.
  • Optional — support during fixes and a follow-up visit.

When the interior “breaks” the sewerage

  • Lowered ceilings and complex details can force route “twists” — without engineering this leads to clogs.
  • Concealed installations require proper cleanouts and access, otherwise any service becomes a renovation.
  • Stack sound insulation and mounting are important for comfort — especially near bedrooms.
  • If the room is under negative pressure due to ventilation, odors can intensify — we check the system interaction.
  • Wrong check valves and connection details often create “permanent” issues.
  • We provide recommendations to minimize interference with finished surfaces.

What is useful to have before the inspection

  • Plan of bathrooms/wet zones and a symptom list (where odor is, where it gurgles).
  • Photos of accessible details (installations, cleanouts, stacks, drains).
  • Information about clog frequency and what has already been tried.
  • Access to cleanouts and technical zones during the visit.
  • Intervention constraints (finished interior, furniture, limited access time).
  • A responsible contact for access and quick decisions.

Odors and “gurgling” have an engineering cause — not “it just happens”

Describe where and when the issue appears — we’ll propose an inspection plan.