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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionZurichALU-SOMMER SUISSE AG
ALU-SOMMER SUISSE AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of ALU-SOMMER is the development, planning, manufacturing, assembly and maintenance of aluminium facades and constructions, including flood protection, powder coating and glass partitions.

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Offering

Products & services

Industry:Building Construction
✓ Offered
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ALU-SOMMER SUISSE AG

8
Aluminium-glass building for building envelopes
Planning, fabrication and installation of building envelopes made of metal and glass; aluminium-glass solutions from windows to prefabricated, assembly-ready element facades.
R&D / planning
Special and alternative solutions for aluminium-glass building projects; research and development work for aluminium, steel, glass and composite façade and roof systems.
Production
Manufacturing of products and façade systems in Stoob and Sopron; prefabrication, cutting, locksmith work, sheet-metal fabrication, window and door construction, special element fabrication and dispatch.
Installation
Site installation of aluminium-glass solutions by our own installation managers and specialist fitters; efficient execution, punctual scheduling and flexible project implementation.
Maintenance / QA
Maintenance, service and quality assurance services for façades, windows, doors and special structures; inspection of fittings, seals and the overall system.
Powder coating
Powder coating of workpieces in our own plant in Stoob, including for external orders; pretreatment, automatic spray booth, manual spray booth, powder dryer and packaging.
Glass partitions
Glass partitions and interior glazing for bright rooms; systems with door systems, sound insulation, slim door profiles and motor-driven control panels.
Flood protection
Mobile flood protection with the DPS 2000® system; aluminium stop logs for protection walls, window and door closures, and temporary installations in case of flood risk.
Trust & reputation

ranQ Trust Score of ALU-SOMMER SUISSE AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

ALU-SOMMER SUISSE AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
ALU-SOMMER SUISSE AG scores 83.0 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.70.212%
  • 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.96.07%
ALU-SOMMER SUISSE AG 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%
ALU-SOMMER SUISSE AG scores 71.4 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 35.71.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ALU-SOMMER SUISSE AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

Knowledge

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Location

Hier entsteht die Karte
Hagenholzstrasse 56
8050 Zurich

At a glance

Legal form
Corporation
UID
CHE-221.945.172
Founded
2020 · 6 years
Last commercial register change
April 22, 2026
Employees
101 to 500
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.70.03%
    • Full methodology

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