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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesPainting & PlasteringFlumenthalViktor Wyss AG
Viktor Wyss AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Viktor Wyss AG is a plastering and building‑finishes company offering plaster and stucco work, dry and lightweight construction, facade insulation and renovation, and wall and floor coatings including seamless systems. The company also provides fire‑protection and acoustic solutions, an electrosmog protection offering (accuraum®), and coordination services for new‑build, renovation and refurbishment projects.

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Offering

Products & services

Industry:Painting & Plastering
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Viktor Wyss AG

✓ Offered10
Drywall and Lightweight Construction
Drywall systems for floor, wall and ceiling structures; custom room design, fire, sound and thermal protection, built-in components for electrical and sanitary installations.
Sound Optimization with Acoustic Ceilings
Acoustic ceilings with seamless smooth ceiling linings, perforated panels or wood-fibre ceilings for sound absorption in living rooms, offices, meeting rooms, sales areas and classrooms.
Plastering
Plastering work inside and outside with base coat, finish coat, renovation plaster and insulating plaster; for masonry, facades, interior walls as well as damp or salt-affected substrates.
Stucco Work
Stucco work on walls and ceilings using pulling and application technique, casting technique and marble technique for indoor and outdoor areas.
Seamless Wall and Floor Coatings
Seamless coatings with Beton Ciré and Sikkens Wall2Floor NF for kitchens, bathrooms, saunas as well as other living areas and renovations.
Subfloor Screeds
Subfloor screeds as a level base for floor coverings, including flowing screed and dry screed; with insulation, underfloor heating and renovation applications.
Facade Insulation
Rendered external thermal insulation for new builds and renovations with advice on thermal protection, sound, fire safety, stability, weather resistance and aesthetics.
Facade Renovation
Facade cleaning, repair, reconstruction, reworking of old render, hydrophobing, painting, as well as graffiti protection and removal.
Radiation Shielding with accuraum®
Shielding of rooms against electrosmog with coating and grounding of walls, ceilings and floors, plus advice for radiation-free building and living.
Healthy Sleeping with accuraum®
Shielding of bedrooms with measurement, proposed measures, multiple coatings and certification to reduce electromagnetic exposure.
Trust & reputation

ranQ Trust Score of Viktor Wyss AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Viktor Wyss AG scores 77.7 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.76.324%
  • 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.67.110%
  • 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.95.08%
Viktor Wyss AG scores 69.9 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.39.612%
  • 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%
Viktor Wyss 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%
Viktor Wyss AG scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Viktor Wyss AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.7 out of 5 stars from 13 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
4.7
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle4.713
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Scharlenweg 5
4534 Flumenthal
Opening hours
Mon
07:30 - 11:30
Tue
07:30 - 11:30
Wed
07:30 - 11:30
Thu
07:30 - 11:30
Fri
07:30 - 11:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-292.152.541
Founded
2024 · 2 years
Last commercial register change
June 11, 2024
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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