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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingTherwilWettstein & Wanner Spenglerei und Bedachungen GmbH
Wettstein & Wanner Spenglerei und Bedachungen GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Wettstein & Wanner GmbH is the execution of roofing and sheet metal work, including sealing, roof renovation, roof repairs, facade cladding, lightning protection systems, gutters, roof dormers, front and gable cladding, chimney cladding, skylight installation and general sheet metal work.

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Offering

Products & services

Industry:RoofingSheet Metal Work
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Wettstein & Wanner Spenglerei und Bedachungen GmbH

✓ Offered3
Sheet metal work
Sheet metal work, cladding, metal sheet roofs, gutters and downpipes, facade cladding, chimney casings, lightning protection systems, fascia and verge board claddings, roof windows and rooflights.
Roofing
Flat roofs made of bitumen sealing membranes, metal sheet, EPDM and plastic sheets; pitched roofs, balcony and terrace refurbishments as well as roof insulation.
Service and maintenance
Annual roof inspection and cleaning at a fixed price or based on effort, including a report and inspection of the entire roof area.
Trust & reputation

ranQ Trust Score of Wettstein & Wanner Spenglerei und Bedachungen GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 96% · As of October 2026

Wettstein & Wanner Spenglerei und Bedachungen GmbH scores 70.7 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.75.024%
  • 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.40.910%
  • 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.95.08%
Wettstein & Wanner Spenglerei und Bedachungen 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%
Wettstein & Wanner Spenglerei und Bedachungen GmbH scores 85.0 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).85.022%
Wettstein & Wanner Spenglerei und Bedachungen GmbH scores 2.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.2.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Wettstein & Wanner Spenglerei und Bedachungen GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 4 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Mühleweg 8a
4106 Therwil
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-109.910.819
Founded
2002 · 24 years
Last commercial register change
July 30, 2009
Employees
1 to 10
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.88.06%
  • 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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