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DirectoryCrafts & TradesMetal ConstructionZurichJoos Metall- und Stahlbau AG
Joos Metall- und Stahlbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Joos Metall- und Stahlbau AG designs, manufactures and installs metal and steel building components for construction and industrial projects. Services include structural steelwork, bespoke constructions, façades, windows, doors, stairs and railings, together with in-house planning, production and on-site service and maintenance, including fire-protection assemblies.

AI-generated
Offering

Products & services

Industry:Metal Construction
✓ Offered12
Metal and steel construction
Metal and steel construction for new builds, conversions and special fabrications; from simple structures to technically demanding projects, including planning, fabrication and installation.
Planning
Planning and project management with in-house metal construction specialists, designers and technicians; including structural calculations and engineering support for processing.
Service and maintenance
Repairs and maintenance work on site or in the workshop; maintenance of doors, gates, railings and fire-protection doors.
Steel construction
Steel construction with short planning and build times and high flexibility; implementation of steel structures for new-build and special projects.
Doors
Planning, fabrication and installation of doors made of aluminium, steel and stainless steel; from entrance doors to tested fire-protection doors with thermal and acoustic insulation.
Windows
Production and installation of windows made of aluminium, steel or stainless steel; optionally with increased requirements for burglary and/or sound insulation.
Facades
Planning and implementation of metal, glass and window facades in aluminium, steel or stainless steel; from curtain-wall mullion-transom systems to fire-protection systems.
Railings
Manufacturing and installation of railings made of steel or chromium-nickel steel; stair, balcony and terrace railings as well as handrails.
Staircases
Custom staircase solutions for indoor and outdoor areas; staircases made of glass, stone or wood, as well as design and installation.
Balcony extension
Balcony extensions on existing buildings or new builds; steel structures with lightweight or prefabricated concrete floor slabs.
Fire protection
Fire-protection elements and closures in classes E30, EI30, EI60 and EI90 made of aluminium, steel or stainless steel with glass inserts; including service and maintenance according to VKF standards.
Special constructions
Special constructions for technical challenges; planning, fabrication and installation according to the customer’s idea.
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4.0/5

Joos Metall- und Stahlbau AG

Trust & reputation

ranQ Trust Score of Joos Metall- und Stahlbau AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Joos Metall- und Stahlbau AG scores 62.5 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.69.424%
  • 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.55.910%
  • 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.50.08%
Joos Metall- und Stahlbau AG scores 79.4 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.97.712%
  • 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%
Joos Metall- und Stahlbau 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%
Joos Metall- und Stahlbau AG scores 6.3 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 35.6.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Joos Metall- und Stahlbau AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 8 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
4.5
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle4.58
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Bellariastrasse 7
8002 Zurich
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 - 15:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-135.809.623
Founded
2012 · 14 years
Last commercial register change
June 28, 2012
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.
76.0
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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