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

About the company

The core activity of Montage Jan GmbH is the sales and assembly of products such as gates, doors, windows, stairs and sun/weather protection solutions, particularly from brands like Hörmann, Keller-Treppen, Griesser and Hilzinger. The company also offers assembly and carpentry services and implements projects with the highest precision and quality.

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Offering

Products & services

Industry:Timber Construction & CarpentryJoinery
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4.0/5

Montage Jan GmbH

✓ Offered11
Installation and joinery work
Installation and joinery work for gates, doors and other building components; precise project implementation using Hörmann products as well as supplementary elements from Keller-Treppen, Griesser and Hilzinger.
Gates and doors
Garage sectional doors, garage roller doors, side sectional doors, hinged swing gates, garage side access doors, front doors, secondary entrance doors and interior doors for new builds and renovation.
Garage doors
Garage sectional doors, Berry swing gates, garage roller doors, side sectional doors and hinged swing gates, as well as matching garage side access doors and operators.
Front doors and entrance doors
Aluminium and steel front doors, entrance doors and gallery doors with thermal insulation, security equipment and various designs.
Interior doors
Wood and glass interior doors in different lines, as well as loft doors and high-quality wooden doors for interior spaces.
Service and maintenance
Regular maintenance of gate and door systems, including inspection of moving parts, safety components and operators, as well as offers for ongoing support.
Staircases
Individual staircase projects using products from Keller-Treppen, as well as professionally installed stair solutions.
Windows
Window solutions from hilzinger GmbH for new builds and renovation, complemented by consultation and professional installation.
Sun and weather protection solutions
Sun and weather protection solutions from Griesser AG for different building and usage situations.
Showroom
Showroom with products to view and experience on site; appointments available for visits in Herzogenbuchsee.
Configurator and quote request
Configurator for selecting design, version, surface, colour and size, as well as a quote request for front doors, garage doors and storage systems.
Trust & reputation

ranQ Trust Score of Montage Jan GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Montage Jan GmbH scores 69.5 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.76.724%
  • 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.45.610%
  • 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%
Montage Jan GmbH scores 78.5 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.89.612%
  • 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%
Montage Jan GmbH 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%
Montage Jan GmbH scores 6.0 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 35.6.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Montage Jan GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 5 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 5 reviews across all connected sources

Sources
GGoogle55
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Kleinholz 13c
3376 Graben
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
Limited Liability Company
UID
CHE-351.850.134
Founded
2015 · 11 years
Last commercial register change
July 31, 2020
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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