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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,837 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureTimber Construction & CarpentryRüegsauschachenGebrüder Zulfaj GmbH
Gebrüder Zulfaj GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Gebrüder Zulfaj GmbH is the manufacture and distribution of energy-efficient windows, doors and carpentry work, particularly made of plastic, as well as the associated services such as consulting, planning and installation.

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Offering

Products & services

Industry:Timber Construction & CarpentryJoinery
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3.9/5

Gebrüder Zulfaj GmbH

✓ Offered6
Windows
uPVC windows made from REHAU SYNEGO with thermal insulation, burglary resistance, sound insulation and low-maintenance HDF surfaces; advice on shapes, colours as well as care and maintenance.
Lift-and-slide doors
Lift-and-slide doors made from REHAU SYNEGO with panoramic effect, thermal insulation, sound insulation, break-in protection and low-maintenance HDF surfaces; advice on technology, colours and care.
Entrance doors
Entrance doors made from REHAU SYNEGO with break-in protection, low threshold, thermal insulation and low-maintenance surface; advice on shapes, colours as well as care and maintenance.
Care and maintenance
Care and maintenance of windows and doors, including cleaning of frames and panes, maintenance of the seals and regular service of the fittings.
Effective ventilation
Instructions for proper ventilation for a comfortable indoor climate, for regulating room humidity and for preventing mould growth and building damage.
Safety
Operating and safety instructions for windows and lift-and-slide doors, including prevention of pinching, falls and incorrect operation.
Trust & reputation

ranQ Trust Score of Gebrüder Zulfaj GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Gebrüder Zulfaj GmbH scores 62.0 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.70.824%
  • 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.27.910%
  • 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.78.08%
Gebrüder Zulfaj GmbH scores 75.7 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.83.012%
  • 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%
Gebrüder Zulfaj GmbH 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%
Gebrüder Zulfaj GmbH scores 11.1 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 35.11.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Gebrüder Zulfaj GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Rüegsaustrasse 53
3415 Rüegsauschachen

At a glance

Legal form
Limited Liability Company
UID
CHE-260.722.948
Founded
2017 · 9 years
Last commercial register change
May 5, 2025
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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