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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesSheet Metal WorkSt. GallenZillig GmbH
Zillig GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Zillig GmbH is the planning, installation and repair of sanitary facilities, particularly in the area of bathroom renovations, as well as the execution of plumbing work, solar systems and lightning protection systems.

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Offering

Products & services

Industry:Sheet Metal WorkSolar & Photovoltaics
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4.1/5

Zillig GmbH

✓ Offered7
Bathroom renovations
Bathroom renovations, consultation, planning and installation of new toilets, showers instead of bathtubs, and complete bathroom redesigns.
Consulting and planning
Consulting and planning, individual solutions, 3D visualisation, detailed planning and, on request, scheduling with other trades involved.
Repairs
Repairs, maintenance and service work for dripping taps, clogged drains, cracks in the washbasin, faulty shower hoses and emergencies.
Conversions
Conversions, refurbishment of several units in multi-family houses, especially for occupied bathrooms and kitchens, with consideration, punctuality and efficiency.
Sheet metal work
Sheet metal work, processing of metal sheets on construction sites, roof claddings, chimney casings, covers for window sills and wall copings, as well as gutters and downpipes.
Thermal solar systems
Thermal solar systems, consultation, planning and installation of systems for hot water for daily use or for heating.
Lightning protection systems
Lightning protection systems, inspection, repair and extension of existing systems, as well as consultation, design and installation of new lightning protection systems.
Trust & reputation

ranQ Trust Score of Zillig GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Zillig GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Zillig GmbH scores 86.7 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.70.07%
Zillig GmbH scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
Zillig GmbH scores 1.4 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.1.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Zillig GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Güetlistrasse 5
9008 St. Gallen

At a glance

Legal form
Limited Liability Company
UID
CHE-107.263.765
Founded
1993 · 33 years
Last commercial register change
March 31, 2014
Employees
11 to 20
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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