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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingUetikon Am SeeDuo Top Service GmbH
Duo Top Service GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Duo Top Service GmbH provides sheet metal and roofing services. Its activities include flat roofs, pitched roofs, lightning protection systems, roof maintenance and special fabrications.

AI-generated
Offering

Products & services

Industry:Roofing
✓ Offered6
Sheet metal roofing work
Sheet metal roofing work for pitched and flat roofs, lightning protection systems, roof maintenance and upkeep, and custom metal fabrications.
Flat roof work
Flat roof wall and edge terminations with Triflex liquid membrane waterproofing, plus retrofitted sealing work and new flat roof construction.
Pitched roof work
Metal pitched roofs in double-lock standing seam systems, dormers and dormer cladding, carport roofs, entrance canopies, balcony coverings, and dormer and chimney cladding.
Lightning protection systems
Lightning protection systems for buildings to reduce damage risk, including advice on the appropriate installation.
Roof maintenance and cleaning
Roof cleaning and annual roof inspections to detect and fix blocked gutters, leaking seams, roots, damaged tiles and failing sealant joints early.
Custom metal fabrications
Custom metal fabrications such as gargoyles, weather vanes, mailbox roofs, decorative lightning-rod elements, and tower cladding with ball and weather vane.
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4.2/5

Duo Top Service GmbH

Trust & reputation

ranQ Trust Score of Duo Top Service GmbH: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Duo Top Service GmbH scores 74.0 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.72.524%
  • 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.95.08%
Duo Top Service GmbH scores 83.0 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%
Duo Top Service GmbH 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%
Duo Top Service GmbH scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Duo Top Service GmbH reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 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
4.6
of 5

Aggregated from 10 reviews across all connected sources

Sources
GGoogle4.610
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Oergelackerstrasse 4
8707 Uetikon Am See

At a glance

Legal form
Limited Liability Company
UID
CHE-109.808.842
Founded
2003 · 23 years
Last commercial register change
June 20, 2024
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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