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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureFacade constructionKernsSepp Wagner GmbH
Sepp Wagner GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Sepp Wagner GmbH is a building sheet-metal and roofing contractor. Its services include pitched and flat roofs, façade cladding, lightning protection systems, photovoltaic installations, and roof repairs and maintenance.

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Service area

Offering

Products & services

Industry:Facade constructionRoofer
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4.0/5

Sepp Wagner GmbH

Sheet metal worker
✓ Offered7
Building sheet metal work
Building sheet metal work for roofs and building envelopes, including precise metalworking, edge finishing, soldering and seaming, as well as millimetre-accurate installation on site.
Roofing
Roofing work with tiles, Eternit, sheet metal and natural slate, including renovation of old roofs and coordinated execution by roofers and sheet metal workers.
Flat roof
Flat roof solutions with waterproofing and drainage, for long-lasting and usable roof surfaces on new and existing buildings.
Facades
Facade cladding and ventilated facades with different formats, colours and materials such as small-format panels, large-format panels and wooden shingles.
Lightning protection
Lightning protection systems for new and existing buildings, with professional planning and implementation to conduct lightning current safely into the ground.
Photovoltaics
Photovoltaic systems on single-family houses, multi-family houses, barns and commercial buildings, including advice, planning and implementation.
Repair / maintenance
Repair and maintenance work on the roof, including fixing minor damage, leaks and regular servicing to protect the roof structure.
Trust & reputation

ranQ Trust Score of Sepp Wagner GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of November 2026

Sepp Wagner GmbH scores 56.8 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.73.124%
  • 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.35.310%
  • 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%
Sepp Wagner 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%
Sepp Wagner 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%
Sepp Wagner GmbH scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sepp Wagner GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 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 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Industriestrasse 8
6064 Kerns

At a glance

Legal form
Limited Liability Company
UID
CHE-106.282.808
Founded
1995 · 31 years
Last commercial register change
March 6, 2023
Employees
11 to 20

Active in 6 of 26 cantons

  • Central Switzerland
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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