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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesSheet metal workerZwillikonBaumann Bau-Spenglerei AG
Baumann Bau-Spenglerei AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Baumann Bau-Spenglerei AG carries out sheet-metal work on roofs and buildings, including gutters, downpipes and metal connections. Its services also include flat roofs, metal roofs and facade cladding, photovoltaic systems and lightning protection.

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Service area

Offering

Products & services

Industry:Sheet metal worker
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Baumann Bau-Spenglerei AG

✓ Offered
6
Sheet metal work
Sheet metal work on roofs, gutters, downpipes and flashings; repairs as well as custom-made sheet metal connections and metal cladding for roof and façade.
Flat roof
Flat roof work with waterproofing, thermal insulation, weather protection, terracing and greening; planning, proper execution and regular inspection to extend service life.
Photovoltaics
Photovoltaic systems on the roof, as an additional roofing service in connection with the roof covering and building works.
Metal roofs and facades
Metal roofs and metal facades as structural roof and façade solutions in the field of sheet metal and metal works.
Lightning protection
Lightning protection systems with planning, installation and expert advice; external and internal lightning protection to protect people, buildings and electrical devices.
Consulting and service
Advice on roof maintenance as well as service-oriented support for work on the roof and during renovations.
Trust & reputation

ranQ Trust Score of Baumann Bau-Spenglerei AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Baumann Bau-Spenglerei AG 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%
Baumann Bau-Spenglerei AG scores 85.5 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.55.07%
Baumann Bau-Spenglerei AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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).86.722%
Baumann Bau-Spenglerei AG scores 48.6 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 35.48.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Baumann Bau-Spenglerei AG 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 November 2026.

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

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Location

Ottenbacherstrasse 22
8909 Zwillikon
Opening hours
Mon
07:30 - 12:00, 13:15 - 17:00
Tue
07:30 - 12:00, 13:15 - 17:00
Wed
07:30 - 12:00, 13:15 - 17:00
Thu
07:30 - 12:00, 13:15 - 17:00
Fri
07:30 - 12:00, 13:15 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-109.683.351
Founded
2002 · 24 years
Last commercial register change
May 23, 2024
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • ZHAffoltern am Albis
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.
100.0
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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