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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingErmenseeKoch Dach Fassaden AG
Koch Dach Fassaden AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Koch Dach Fassaden AG is the execution of works in the fields of roofing, sheet metal work, facade construction and building renovation, including the planning, design and implementation of construction projects in the areas of pitched roofs, solar roofs, facades, sheet metal work and lightning protection, as well as the provision of services such as building renovation, repairs, roof maintenance and machine rental.

AI-generated
Offering

Products & services

Industry:Roofing
✓ Offered9
Pitched roof
Pitched roofs with clay, concrete, fibre-cement or natural slate; erection of scaffolding, insulation, sheathing and tiling with roof tiles, as well as advice on materials and shape.
Building renovation
Building renovation with thermal insulation of the building envelope, façade modernisation and full energy renovation; reducing heat loss and advising on grants.
Facades
Facades with slate, Eternit, wood, shingles, roof tiles or artificial resin; design and execution for long-lasting and durable building envelopes.
Solar roof / solar modules
Solar module FIT as an aesthetic alternative to a conventional solar roof; mounting on the roof with solar cables laid invisibly and compact use of surface area.
Sheet metal works
Sheet metal works around the roof to protect against weather and water; metal connections and other sheet metal work on the building.
Lightning protection
Lightning protection systems and down conductors for buildings; preventive protection for residential properties against lightning damage.
Roof repairs
Roof repairs for storm damage and damage to the roofing materials; replacing defective materials, repairing caulk seals and cleaning gutters.
Roof maintenance
Roof maintenance including roof and gutter cleaning as well as repairs if needed; regular inspection and upkeep of the roof.
Service contract for roof maintenance
Service contract for regular roof inspections and cleanings; checking pitched roof surfaces, sheet metal connections, snow stops, snow guard devices, gutters, roof drains and caulk joints.
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4.3/5

Koch Dach Fassaden AG

Trust & reputation

ranQ Trust Score of Koch Dach Fassaden AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Koch Dach Fassaden AG scores 73.1 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.68.910%
  • 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.50.08%
Koch Dach Fassaden 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%
Koch Dach Fassaden 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%
Koch Dach Fassaden AG scores 45.7 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 35.45.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Koch Dach Fassaden AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 14 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
4.9
of 5

Aggregated from 14 reviews across all connected sources

Sources
GGoogle4.914
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Aargauerstrasse 13
6294 Ermensee

At a glance

Legal form
Corporation
UID
CHE-111.720.010
Founded
2004 · 22 years
Last commercial register change
July 10, 2025
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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