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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInterior ConstructionEffretikonGrissmann GmbH
Grissmann GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Grissmann GmbH sells and installs windows, gates, doors, fences and garage doors, and provides consultation, delivery and installation services. The company supplies products from manufacturers such as Ponzio, Gealan, Schüco and Salamander and offers solutions for private and industrial customers, including an online configurator and a showroom.

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Offering

Products & services

Industry:Interior Construction
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3.9/5

Grissmann GmbH

Metal Construction
Plastics Industry
✓ Offered5
Garage doors
Garage doors in various versions, including sectional doors, swing doors, double-leaf gates and roller doors; including consultation, delivery, installation and an online calculator for sectional doors.
Windows
Window systems for new builds and renovations, made from aluminium and plastic profiles from various brands; with planning, direct import and installation by our own window team.
Gates
Gates for private use with sliding gates, double-leaf gates and pedestrian gates; as system solutions for functionality, security and easy installation, including a configurator.
Fences
Fence elements and fence systems with segments, sliding gates as well as double-leaf gates and pedestrian gates; for private properties, with various models and designs.
Gates, windows, doors and fences in Home-Inclusive Design
Combined design of gates, windows, doors and fences in a uniform design; with 16 colours, patterns and coordinated surfaces.
Trust & reputation

ranQ Trust Score of Grissmann GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Grissmann GmbH scores 71.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.79.424%
  • 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.52.910%
  • 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.70.08%
Grissmann GmbH scores 61.5 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.50.012%
  • 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%
Grissmann GmbH 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%
Grissmann GmbH scores 2.6 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 35.2.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Grissmann 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 7 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 7 reviews across all connected sources

Sources
GGoogle57
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Vogelsangstrasse 17
8307 Effretikon
Opening hours
Mon
07:00 - 16:30
Tue
07:00 - 16:30
Wed
07:00 - 16:30
Thu
07:00 - 16:30
Fri
07:00 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-426.533.464
Founded
2023 · 3 years
Last commercial register change
April 4, 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.
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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