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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSealing & InsulationChurBrunner Abdichtungen GmbH
Brunner Abdichtungen GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Brunner Abdichtungen GmbH is the sealing of flat roofs, balconies and terraces, as well as the installation of solar systems and repair work on the building envelope.

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Products & services

Industry:Sealing & Insulation
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Brunner Abdichtungen GmbH

4
Flat roof waterproofing
Waterproofing of flat roofs, specialised solutions for flat-roof work and watertight workmanship as part of the building envelope.
Waterproofing and surfacing for balconies and terraces
Waterproofing and surfacing for balconies and terraces, work focused on the tightness and surface finishing of these structural elements.
Solar installations
Installation of solar systems on the roof or on the building envelope, as an additional installation service alongside waterproofing work.
Repairs and minor work on the building envelope
Repairs and minor work around the building envelope, supplemented by general maintenance and restoration work.
Trust & reputation

ranQ Trust Score of Brunner Abdichtungen GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

Brunner Abdichtungen GmbH 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.
x
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%
Brunner Abdichtungen GmbH scores 61.5 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.50.012%
  • 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 Abdichtungen GmbH scores 83.3 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).83.322%
Brunner Abdichtungen GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Knowledge

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Location

Meierweg 27
7000 Chur

At a glance

Legal form
Limited Liability Company
UID
CHE-269.545.664
Founded
2023 · 3 years
Last commercial register change
January 27, 2025
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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