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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsUnterterzenDach Walser AG
Dach Walser AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Dach Walser AG provides services for building envelopes and roof systems. Its offerings include pitched and flat roofing, metalwork (spengler) services, façade construction, photovoltaic installations, lightning and flood protection, roof windows, and maintenance and repair of roof and façade components.

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Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered
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4.2/5

Dach Walser AG

9
Roofing
Roofing, roof insulation and sheet metal work for single-family and multi-family houses; carried out as roof renovations and new builds.
Flat roofing work
Flat roofing work with sheet metal work and floor coverings for residential buildings, high-rises and terrace houses; including work on new builds.
Sheet metal work
Sheet metal work for double-lock seam roofs and Prefa roofs in chromed steel or Prefa Prefalz; also for new builds and renovations.
Facade construction
Facade construction with facade slate, Eternit, Prefa facade cladding, insulation and window sills; also renovations and conversions.
Photovoltaics
Photovoltaic systems and photovoltaic energy roofs, partly integrated as roof-integrated systems with a roof window or a thermal system.
Lightning protection
Lightning protection systems with external and internal lightning protection to protect buildings, electrical installations and electronic devices.
Roof windows
Roof windows, roof window sets with heat protection, and roof accesses on roof gardens with wooden flooring.
Service / Maintenance
Maintenance of the building envelope, periodic servicing and rapid repair of roof damage such as tile damage, storm damage or clogged gutters.
Flood protection
Flood protection for property protection and landscape protection, implemented at entrances, exits and other parts of the building.
Trust & reputation

ranQ Trust Score of Dach Walser AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Dach Walser AG scores 76.0 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.83.324%
  • 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.63.210%
  • 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.70.08%
Dach Walser 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%
Dach Walser AG scores 83.3 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).83.322%
Dach Walser AG scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Dach Walser AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 11 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 11 reviews across all connected sources

Sources
GGoogle511
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Bodenstrasse 2
8882 Unterterzen
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
09:00 - 12:00
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.801.421
Founded
1990 · 36 years
Last commercial register change
September 13, 2023
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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