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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesSheet Metal WorkOberbürenFranz Rossi AG
Franz Rossi AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Franz Rossi AG provides building-envelope services, carrying out roofing, photovoltaic/solar installations, façade work, metalwork/flashings and lightning protection, as well as maintenance and upkeep.

AI-generated
Offering

Products & services

Industry:Sheet Metal Work
✓ Offered5
Roofing
Pitched and flat roofs, roof renovations, green roofs, and roof windows with accessories; also sandwich panels for industrial, agricultural and commercial buildings.
Photovoltaic Systems
Consulting, planning, building and subsidy applications, installation with electrical work, commissioning and instruction for on-roof and in-roof systems on pitched and flat roofs.
Facade Works
Facades in Eternit, wood, natural slate and aluminium frames, plus facade renovations and energy optimisation of the entire building envelope.
Sheet Metal Work and Lightning Protection
Cladding, roof drainage, metal roofs and metal facades, plus lightning protection systems with interception, down conductors, earthing and equipotential bonding.
Maintenance and Upkeep
Periodic inspections of pitched and flat roofs, facades and PV systems, cleaning of gutters and drains, care of green roofs, and thermographic testing.
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4.4/5

Franz Rossi AG

Trust & reputation

ranQ Trust Score of Franz Rossi AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Franz Rossi AG scores 78.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.82.524%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.61.010%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.88.08%
Franz Rossi AG scores 92.3 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.82.07%
Franz Rossi 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%
Franz Rossi AG scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Franz Rossi AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 10 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 10 reviews across all connected sources

Sources
GGoogle510
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Comparisons

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Location

Bürerfeld 14
9245 Oberbüren
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:30
Tue
08:00 - 12:00, 13:00 - 17:30
Wed
08:00 - 12:00, 13:00 - 17:30
Thu
08:00 - 12:00, 13:00 - 17:30
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.997.477
Founded
1983 · 43 years
Last commercial register change
June 22, 2020
Employees
21 to 50
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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