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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionLe LignonGS WINDOWS SA
GS WINDOWS SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company provides services in the field of joinery, particularly the design, manufacture and installation of windows, doors and other wood, PVC and aluminum works for the construction and renovation of real estate.

AI-generated
Offering

Products & services

Industry:Building Construction
✓ Offered12
Exterior joinery
Supply and installation of exterior joinery in wood, PVC and aluminium for new builds, renovations and custom projects.
PVC windows
PVC windows with hinged or sliding sashes for new construction and renovation, with thermal and acoustic insulation, easy maintenance and several finishes.
Aluminium joinery
Aluminium windows and joinery with thermal break, double or triple glazing, reduced maintenance and a wide choice of colours.
Wooden joinery
Windows and wooden joinery with different timber species, multiple finishes, double or triple glazing and thermal and acoustic performance.
Wood-aluminium joinery
Wood-aluminium windows combining the warmth of wood with the durability of aluminium, with glazing options and many colours.
PVC-aluminium joinery
PVC-aluminium windows combining thermal insulation, exterior aluminium cladding, double or triple glazing and many finishes.
Traditional wooden windows
Traditional wooden windows in oak, fir or larch for protected buildings or renovations, with a traditional look and current performance.
Glazing
Supply and installation of glazing for new and existing PVC, wood or aluminium windows, with insulating, laminated, solar or tinted glass.
Glazed guardrails
Glazed guardrail systems, transparent balustrades and other guardrail solutions to let in light and secure areas.
Repairs, maintenance and troubleshooting
Repairs, regular maintenance and fast troubleshooting for exterior joinery, windows, doors and small locksmith services.
New builds and renovations
Support for new build and renovation projects, with solutions tailored to architects, companies, institutions and private clients.
Tailor-made projects
Tailor-made solutions for windows, doors and joinery, adapted to each project’s needs, budget and constraints.
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3.9/5

GS WINDOWS SA

Trust & reputation

ranQ Trust Score of GS WINDOWS SA: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

GS WINDOWS SA scores 51.8 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.37.324%
  • 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.72.110%
  • 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%
GS WINDOWS SA scores 87.1 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%
GS WINDOWS SA 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%
GS WINDOWS SA scores 10.0 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 35.10.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

GS WINDOWS SA reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 3.4 out of 5 stars from 16 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
3.4
of 5

Aggregated from 16 reviews across all connected sources

Sources
GGoogle3.416
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Chemin du Château-Bloch 17
1219 Le Lignon
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
09:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-109.097.791
Founded
2001 · 25 years
Last commercial register change
July 4, 2022
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.85.03%
    • Full methodology

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