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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingBaarDünnenberger AG
Dünnenberger AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Dünnenberger AG encompasses the planning, execution and maintenance of work in the field of building envelopes, particularly: Metalwork: work on pitched and flat roofs, facades and roof inspections; Flat roofs: sealing work with bituminous sealing strips, plastic films and liquid plastics; Lightning protection: installation and maintenance of lightning protection systems; Facades: work on facades, including installation and maintenance of rainwater storage systems and terrace drainage covers. The company thus offers comprehensive services for the construction, maintenance and repair of building envelopes.

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Offering

Products & services

Industry:RoofingSheet Metal Work
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4.1/5

Dünnenberger AG

✓ Offered4
Roof sheet metal work
Gutters, downpipes, metal roofs, dormer cladding, chimney flashings and window sills; advice, planning, fabrication and installation for the building envelope.
Flat roof
Sealing systems for flat roofs using bituminous membranes, plastic sheets and liquid plastics.
Lightning protection
Design, installation, periodic inspections as well as maintenance and testing of lightning protection systems, including external lightning protection and earthing systems.
Special work
Facade systems as well as individually made sheet-metal and metal parts with laser processing; laser cutting, perforations, lettering, prototypes and one-off fabrications.
Trust & reputation

ranQ Trust Score of Dünnenberger AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Dünnenberger AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Dünnenberger AG scores 78.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.83.012%
  • 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%
Dünnenberger AG 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%
Dünnenberger AG scores 14.3 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 35.14.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Dünnenberger AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Gewerbestrasse 5
6340 Baar
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
Corporation
UID
CHE-183.477.819
Founded
2017 · 9 years
Last commercial register change
December 18, 2017
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.
100.0
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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