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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesDietlikonRoSan AG
RoSan AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of RoSan GmbH is the provision of services in the field of facade and window work, particularly in the execution of: exterior wall insulation with plastering, window sills, baseboards, and frames. The company offers these services for construction projects and has specialized in the execution of plastering work.

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Offering

Products & services

Industry:Specialized Construction Activities
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4.1/5

RoSan AG

✓ Offered6
Rendered external insulation
Rendered external insulation with organic and mineral systems, supplemented by facade crack repair and concrete restoration.
Window sills
Window sills and parapet copings made of GFB, anodized aluminium or Alu EBL, including on-site measurement, delivery and installation.
Plinth detailing
Plinth detailing in aluminium and glass-fibre concrete, including pre-positioned glass-fibre concrete plinths with joint finishing.
Window surrounds
GFB window surrounds matched to GFB window sills in combination with GFB plinths.
Painting and plastering work
Painting and plastering work in connection with façade and construction projects.
Facade scaffolding
Facade scaffolding for work on the building envelope.
Trust & reputation

ranQ Trust Score of RoSan 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.

RoSan 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.
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%
RoSan 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%
RoSan 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%
RoSan AG scores 2.0 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 35.2.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

RoSan 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

Bromackerstrasse 13
8305 Dietlikon
Opening hours
Mon
06:00 - 18:00
Tue
06:00 - 18:00
Wed
06:00 - 18:00
Thu
06:00 - 18:00
Fri
06:00 - 18:00
Sat
06:00 - 12:00
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-114.686.711
Founded
2009 · 17 years
Last commercial register change
June 24, 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.
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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