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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryCrafts & TradesBuilding installationGlattbruggSiema Storen GmbH
Siema Storen GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Siema Storen GmbH provides custom sun and weather protection solutions as well as burglary protection, supplying and installing roller shutters, venetian blinds, awnings, pergolas and glass roofs. The company’s services include consultation, installation, maintenance and repair, renovation and fabric replacement; a showroom is available and smart‑home control is supported.

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Service area

Offering

Products & services

Industry:Building installation
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4.4/5

Siema Storen GmbH

✓ Offered9
Sun and weather protection systems
Sun and weather protection systems for garden, terrace, windows, balcony and loggia; roller shutters, Raffstoren, window shutters, vertical awnings, articulated-arm and cassette awnings, pergolas and pavilions.
Consulting
Individual consulting for sun, weather and burglary protection; selection of suitable shading solutions, fabrics and drive systems for new builds, conversions or existing buildings.
Service & Repairs
Service and repair of awnings, roller shutters and louvres; minor adjustments, major repairs and maintenance for trouble-free operation.
Renovation & Conversion
Renovation, conversion and modernisation of sun protection systems; suitable shading and blind solutions for converted or renovated buildings.
Fabric replacement & awning fabrics
Replacement of defective or unsuitable awning fabrics; fabric replacement for a fresh look, improved protection and weatherproof execution.
Smart Home (TaHoma®)
TaHoma® smart home system for controlling roller shutters, heating, lighting, shading and security via the app, smartphone, tablet or PC.
Balcony and loggia shading
Awning and shading solutions for balconies and loggias; side shading, articulated-arm and projecting awnings as well as cassette awnings for view, sun and wind protection.
Window shading
Roller shutters, Raffstoren, window shutters, vertical awnings as well as articulated-arm and projecting awnings for windows and facades, partly with burglary-resistant properties.
Garden and terrace shading
Pavilions, glass roofs, pergolas, conservatory awnings, freestanding awnings and roller sails for shade, weather protection and outdoor areas.
Trust & reputation

ranQ Trust Score of Siema Storen GmbH: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of November 2026

Siema Storen GmbH scores 85.8 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.77.424%
  • 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.98.510%
  • 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.95.08%
Siema Storen GmbH scores 86.7 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.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.70.07%
Siema Storen GmbH scores 86.7 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).86.722%
Siema Storen GmbH scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Siema Storen GmbH reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 47 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.6
of 5

Aggregated from 47 reviews across all connected sources

Sources
GGoogle4.647
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Europa-Strasse 30
8152 Glattbrugg
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-103.602.609
Founded
1997 · 29 years
Last commercial register change
April 17, 2025
Employees
11 to 20

Active in 1 of 26 cantons

  • ZHZurich
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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