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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingWald ArBrunner GmbH
Brunner GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Brunner GmbH is the provision of craft services in the areas of sheet metal work, roofing, facades, scaffolding, and sanitary installations. Specifically, this includes: Sheet metal work: manufacture and installation of metal roofs, facade cladding, gutters and chimney cladding; Roofing: consulting and support for all questions related to roofing; Facades: weather-tight execution of facades; Scaffolding: erection of scaffolding for construction and renovation work; Sanitary installations: planning, installation and renovation of sanitary installations in new buildings, conversions and renovations. The company thus offers a wide range of craft services for the construction and renovation sector.

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Offering

Products & services

Industry:RoofingSheet Metal Work
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3.9/5

Brunner GmbH

✓ Offered5
Roofing
Roofing for pitched roofs and flat roofs, thermal insulation, roof windows, repair and maintenance as well as lightning protection; with tiles, Eternit, natural slate and sheet metal.
Sheet metal work
Sheet metal work for metal sheet roofs, façade cladding, chimney flashings, gutters, downpipes, flashings, wall copings and lightning protection; in copper, aluminium, chrome steel and steel sheet.
Façades
Façade cladding and coverings for weather protection, thermal insulation and rain-screen ventilation; implemented with Eternit, wood or metal façades as well as door and window frames.
Scaffolding
Assembly, dismantling and rental of scaffolding material for new builds, conversions and renovations; for façade and roofing work as well as safe work in every construction phase.
Sanitary facilities
Sanitary installations for new builds, conversions and renovations; mentioned as reliable support for sanitary facilities.
Trust & reputation

ranQ Trust Score of Brunner GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Brunner 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%
Brunner 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%
Brunner GmbH scores 85.0 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).85.022%
Brunner GmbH scores 14.0 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 35.14.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Brunner 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 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 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Unterdorf 4
9044 Wald Ar
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 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-105.693.505
Founded
2000 · 26 years
Last commercial register change
November 13, 2008
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.
88.0
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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