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

About the company

The core activity of Concenti GmbH is the provision of services in the field of roofing, particularly in the areas of roofing, solar and maintenance, including lightning protection and roof maintenance. The company also offers maintenance contracts and employs qualified staff, including federally certified master roofers.

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Products & services

Industry:Sheet Metal Work
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4.3/5

Concenti GmbH

5
Sheet metal work
Metal roofing, dormer and chimney cladding, metal façades, lightning protection, classic sheet metal work, as well as verge and gable board cladding.
Roofing work
Planning and execution of pitched and flat roofs, green roofs, gravel roofs, Minergie roofs, fall protection, liquid waterproofing and bituminous sealing.
Roof maintenance
Inspection, cleaning and repair of pitched and flat roofs to identify weaknesses at an early stage and to prevent larger renovations.
Roof maintenance contract
Roof maintenance contract with free flat-roof check, assessment of the current condition and visual inspection of connections, drains, foreign growth, caulking joints, soldering and expansion joints.
Solar installations on the roof
Solar solutions for the roofing sector, listed on the website as a separate service area alongside sheet metal and roofing work.
Trust & reputation

ranQ Trust Score of Concenti GmbH: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Concenti GmbH scores 78.2 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.83.524%
  • 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.72.110%
  • 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.70.08%
Concenti 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%
Concenti 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%
Concenti GmbH scores 2.3 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 35.2.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Concenti GmbH reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 16 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
4.9
of 5

Aggregated from 16 reviews across all connected sources

Sources
GGoogle4.916
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Chapfstrasse 7
8906 Bonstetten
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-106.041.268
Founded
1999 · 27 years
Last commercial register change
February 25, 2025
Employees
11 to 20
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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