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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryCrafts & TradesRooferThunOswald Müller GmbH
Oswald Müller GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of O. Müller GmbH is the execution of roofing and sheet metal work, in particular: sheet metal work (e.g. gutters, downspouts, water collectors), flat roofs (e.g. new installations, repairs, cleaning), lightning protection systems (e.g. new installations, additions, adaptations), property maintenance (e.g. roof inspections, repairs to building envelopes), and sheet metal processing (e.g. sheet metal cutting, bending, riveting, soldering, spot welding, drilling). The company also offers workshops and creative studios where customers can realize their own sheet metal projects.

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Offering

Products & services

Industry:Roofer
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3.9/5

Oswald Müller GmbH

Sheet metal worker
✓ Offered7
Sheet metal work
Gutters, downpipes, water collectors, roof windows, sheet metal cladding for dormers and chimneys, seamed roofs, facade cladding, as well as weather vanes and ornaments.
Flat roofs
Membrane roofs and bitumen roofs for new builds, renovation and building envelopes in the flat roof sector.
Lightning protection systems
New systems, additions and adjustments in accordance with GVB and SEV for buildings and installations.
Property maintenance
Roof inspections on subscription, repairs to building envelopes, roof maintenance and cleaning of flat and pitched roofs, as well as gutter and downpipe cleaning.
Sheet metal cutting and pickup service
Cutting, bending, riveting, soldering, spot welding and drilling of sheet metal; pickup and sheet metal cutting service for customer orders.
Workshops in the creative workshop
Workshops for freely designing art pieces made of sheet metal, together with friends or staff, including a plasma freehand cutter.
Room rental
Rent a room in the creative workshop by the day, week or month.
Trust & reputation

ranQ Trust Score of Oswald Müller GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of November 2026

Oswald Müller GmbH scores 53.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.70.824%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.27.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
Oswald Müller GmbH scores 83.0 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%
Oswald Müller GmbH 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%
Oswald Müller GmbH scores 10.3 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 35.10.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Oswald Müller GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Wylergasse 4a
3608 Thun

At a glance

Legal form
Limited Liability Company
UID
CHE-112.401.429
Founded
2005 · 21 years
Last commercial register change
December 9, 2013
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • BEThun
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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