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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesJoineryStilliSiegenthaler AG Fenster
Siegenthaler AG Fenster Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the manufacture and assembly of high-quality windows and doors, including the associated components such as handles and hinges, as well as the provision of services in the areas of installation and maintenance.

AI-generated
Offering

Products & services

Industry:JoineryWood Processing & Sawmills
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4.4/5

Siegenthaler AG Fenster

✓ Offered6
Windows
Custom-made wood-aluminium windows for new builds, renovation and refurbishment; burglary protection, sound insulation, thermal insulation, design, durability, as well as special shapes and fixed glazing.
Doors
House and escape doors made of wood-aluminium produced in-house; thermal insulation, burglary protection, locking systems, door handles and biometric access control systems.
Installation & Service
Professional installation, maintenance and repairs for windows and doors; advice, site measurements, coordinated execution and regular checks of safety, sealing and function.
Handles & Door Push Plates
Window handles in aluminium or stainless steel, as well as front door push plates in stainless steel; standard versions and custom-made items, including modern locking and opening systems.
Spray coating
Surface treatment and coatings for windows and doors; individual components or series production, colour consulting, special coatings and durable, weather-resistant results.
Insect screens
Insect screens tailored to window and door systems; precisely fitting systems, professional installation and discreet aluminium profiles with light- and air-permeable mesh.
Trust & reputation

ranQ Trust Score of Siegenthaler AG Fenster: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Siegenthaler AG Fenster scores 85.0 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.82.224%
  • 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.79.710%
  • 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.100.08%
Siegenthaler AG Fenster scores 83.5 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.95.212%
  • 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%
Siegenthaler AG Fenster scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Siegenthaler AG Fenster scores 34.3 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 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Siegenthaler AG Fenster reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 22 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
4.8
of 5

Aggregated from 22 reviews across all connected sources

Sources
GGoogle4.822
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Hinterdorfstrasse 5
5233 Stilli
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
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-363.886.908
Founded
2013 · 13 years
Last commercial register change
January 28, 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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