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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureFacade constructionDomat/EmsConstructa-Bau AG
Constructa-Bau AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Constructa-Bau AG carries out sheet-metal work and custom fabrication. Its services include roof maintenance and cleaning, chimney flashings, lightning protection systems, pitched and flat roofs, façade cladding, and roof windows and glazing.

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Service area

Offering

Products & services

Industry:Facade constructionRoofer
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4.1/5

Constructa-Bau AG

Sheet metal worker
✓ Offered5
Sheet metal work
Classic sheet-metal works, custom fabrications, chimney flashings and maintenance work such as roof cleaning.
Lightning protection systems
Design and installation of lightning protection systems for buildings and roof structures.
Pitched roofs and flat roofs
Work on pitched and flat roofs, including roof build-up and associated roofing work.
Facade cladding
Facade cladding for renovation and new-build projects, especially in ventilated, rainscreen facade construction.
Roof windows and roof glazing
Installation of roof windows and roof glass elements for roofs and roof areas.
Trust & reputation

ranQ Trust Score of Constructa-Bau AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Constructa-Bau 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%
Constructa-Bau AG scores 85.5 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.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%
Constructa-Bau AG 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%
Constructa-Bau AG scores 0.9 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 35.0.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Constructa-Bau 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 November 2026.

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

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Location

Plong Muling 16
7013 Domat/Ems

At a glance

Legal form
Corporation
UID
CHE-106.541.542
Founded
1990 · 36 years
Last commercial register change
March 11, 2021
Employees
1 to 10

Active in 1 of 26 cantons

  • GRGrisons
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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