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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceSulgenStardach Bauabdichtungen GmbH
Stardach Bauabdichtungen GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Stardach Bauabdichtungen GmbH plans and carries out building waterproofing and roofing work, with a focus on flat roofs, liquid-applied waterproofing and sheet metal work. The company provides sealing systems, detail solutions and metalwork for residential and commercial buildings.

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Offering

Products & services

Industry:Building MaintenanceSealing & Insulation
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3.4/5

Stardach Bauabdichtungen GmbH

Roofing
Sheet Metal Work
✓ Offered3
Flat Roof Work
Flat roof construction and renovation with bituminous waterproofing, plastic membranes, thermal insulation, slope concepts, and protective or service layers for residential and commercial buildings.
Liquid Plastic Waterproofing
Seamless waterproofing with liquid plastic for joints, penetrations, parapets, balconies, terraces, and complex geometries with a defined layer build-up.
Sheet Metal Roofing Work
Sheet metal roofing work for roof edges, drainage, and metal flashing connections, including measuring, fabrication, and installation of gutters, outlets, and connection details.
Trust & reputation

ranQ Trust Score of Stardach Bauabdichtungen GmbH: 3.4 out of 5.0

Trust Score3.4/ 5.0

Solid

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Data basis 54% · As of October 2026

Stardach Bauabdichtungen 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.
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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%
Stardach Bauabdichtungen GmbH scores 40.1 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.0.012%
  • 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%
Stardach Bauabdichtungen GmbH scores 83.3 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).83.322%
Stardach Bauabdichtungen GmbH scores 1.7 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 35.1.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Stardach Bauabdichtungen GmbH reaches a ranQ Trust Score of 3.4 out of 5.0 — rated «Solid». 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

Alpenstrasse 15a
8583 Sulgen

At a glance

Legal form
Limited Liability Company
UID
CHE-319.799.358
Founded
2026 · 0 years
Last commercial register change
February 5, 2026
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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