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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesMetal ConstructionWidnauSpirig-Sieber AG
Spirig-Sieber AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Spirig-Sieber AG is the planning, manufacturing and assembly of products made of steel and stainless steel, particularly in the fields of metal construction, artistic metalwork and installations. This includes, among other things, the production of stairs, railings, gates, handrails, balconies, privacy screens, roofs, carports, facades, steel structures, garden installations, interior cladding, vehicles, tables and forged products.

AI-generated
Offering

Products & services

Industry:Metal Construction
✓ Offered12
Metal construction
Metal construction for staircases, railings, gates, handrails, balconies, privacy screens, roofs/carports, facades and steel construction.
Ornamental ironwork
Ornamental ironwork for forged work, grilles, gates, railings and handrails.
Installations
Installations in the metal sector, supplemented by special work such as water barriers, interior cladding of vehicles and tables.
Staircases
Staircases made of metal, suitable for new builds, conversions and custom metal construction projects.
Railings
Railings for buildings and facilities, also in forged design.
Gates
Gates in metal design, also as forged versions and for different installation situations.
Handrails
Handrails made of metal, also in forged design for indoor and outdoor areas.
Balconies
Balconies made of metal for new builds, conversions and extensions.
Privacy screens
Privacy screen elements made of metal for private and commercial facilities.
Roofs / Carport
Roofs and carports in metal construction for protective and covering solutions.
Facades
Facades in metal design for building envelopes and cladding.
Steel construction
Steel construction for load-bearing and structural metal work.
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4.0/5

Spirig-Sieber AG

Trust & reputation

ranQ Trust Score of Spirig-Sieber AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Spirig-Sieber AG scores 63.1 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.78.124%
  • 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.49.510%
  • 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.35.08%
Spirig-Sieber AG scores 85.5 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.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.55.07%
Spirig-Sieber AG 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%
Spirig-Sieber AG scores 1.7 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 35.1.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Spirig-Sieber AG 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 6 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 6 reviews across all connected sources

Sources
GGoogle56
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Birkenstrasse 1a
9443 Widnau
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
Corporation
UID
CHE-102.310.966
Founded
1989 · 37 years
Last commercial register change
November 28, 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.
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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