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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesMetal ConstructionAesch BlGebrüder Schlumpf AG
Gebrüder Schlumpf AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Gebr. Schlumpf AG is metal construction, locksmithing, steel construction, staircase construction, winter gardens, custom work and repairs for commercial and private customers.

AI-generated
Offering

Products & services

Industry:Metal Construction
✓ Offered8
Metal construction & blacksmithing
Metal fabrication and blacksmithing works for renovation and new-build projects; design, planning, production and assembly of stairs, doors, gates, facades, art objects and modular carts.
Steel construction
Steel structures for industrial halls, workshops, support pillars and special structures; development, planning, production and assembly of steel structures of all kinds.
Stair construction
Stairwells, exterior stairs, basement stairs, steel stairs, industrial and emergency stairs; landings, rails, handrails and also spiral and circular staircases.
Doors and gates
Entrance doors, fire-protection doors, aluminium and steel doors, swing, sliding and folding gates; plus grid gates, portals, security fences, door frames and glazing.
Facade structures
Metal windows, roof windows, skylights, shopfront windows, facade structures and special structures for building envelopes.
Art blacksmithing
Art blacksmithing works, restorations and reconstructions, garden fences, handrails, advertising objects, company logos, pub signs, grave crosses and weather vanes.
Modular carts for fire and police
Individually tailored cart systems for fire and police, with interior planning down to the millimetre and subsequent implementation.
Mast ladder
Modular mast ladder system for service work on concrete masts; base module and set sizes up to working heights of 24, 30 or 48 metres.
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4.2/5

Gebrüder Schlumpf AG

Trust & reputation

ranQ Trust Score of Gebrüder Schlumpf AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Gebrüder Schlumpf AG scores 68.0 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.76.724%
  • 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.45.610%
  • 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%
Gebrüder Schlumpf AG scores 89.3 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%
Gebrüder Schlumpf 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%
Gebrüder Schlumpf AG scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Gebrüder Schlumpf AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 5 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 5 reviews across all connected sources

Sources
GGoogle55
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Gewerbestrasse 11 a
4147 Aesch Bl
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-102.428.042
Founded
1978 · 48 years
Last commercial register change
August 19, 2016
Employees
11 to 20
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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