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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsGaselGebrüder Wenger AG
Gebrüder Wenger AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Gebr. Wenger AG is the roofing trade, including facade construction, solar systems, scaffolding, sheet metal work, fall protection, roof windows, maintenance and repair of roofs, as well as planning and consulting in these areas.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered10
Flat roof
Turnkey flat roof work, flat roof renovations, complete build-ups with waterproofing, thermal insulation and fall, bitumen and plastic waterproofing, terraces, roof greening and repairs.
Pitched roof
Pitched roof renovations and re-roofing, including sheet metal work and scaffolding, with clean detailing for long-lasting watertightness and professional execution.
Facade
Turnkey facade work, ventilated facades in wood, metal or fibre-cement, thermal insulation, energy modernisations, renovations and repairs.
Solar / photovoltaic
Photovoltaic systems on the roof, coordinated integration with storage and energy management, as well as projects related to self-generated power and roof integration.
Scaffolding construction
All scaffolding construction work, facade scaffolds for roof, facade and conversion work, scaffolds for PV systems, special scaffolds and temporary access solutions.
Sheet metal work
Custom-fabricated sheet metal work, precise connections for roof, facade and windows, and durable, accurate sheet metal workmanship.
Fall protection
Temporary and permanent fall protection systems, planning and installation of complete safety concepts, inspection of existing anchor points and documentation according to SUVA and standard requirements.
Roof windows
Installation and replacement of roof windows, extensions, accessories such as roller shutters and blinds, integration into renovation and conversion projects, plus service and repairs.
Maintenance and repair
Roof inspections, maintenance subscriptions, gutter cleaning, repairs after hail and storm damage, PV checks, condition reports and cleaning work.
Planning and consulting
Advisory, analysis and site-specific planning for conversions, new builds and complete renovations, coordinated with the building envelope and the specific project.
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4.1/5

Gebrüder Wenger AG

Trust & reputation

ranQ Trust Score of Gebrüder Wenger 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.

Gebrüder Wenger 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%
Gebrüder Wenger AG scores 92.3 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.82.07%
Gebrüder Wenger 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%
Gebrüder Wenger AG scores 37.1 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 35.37.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Gebrüder Wenger 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.

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Location

Gaselmattstrasse 53
3144 Gasel
Opening hours
Mon
07:00 - 18:00
Tue
07:00 - 18:00
Wed
07:00 - 18:00
Thu
07:00 - 18:00
Fri
07:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-100.745.141
Founded
1981 · 45 years
Last commercial register change
December 23, 2022
Employees
21 to 50
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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