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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction managerWidnauvistona experts ag
vistona experts ag Logo
Verified· 3 sourcesTrust Score
Summary

About the company

vistona experts ag plans and delivers waterproofing solutions for structures in contact with the ground and watertight concrete construction. Its services include consulting, concept development, BIM-based specialist planning, tendering, site supervision and implementation.

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Service area

Offering

Products & services

Industry:Construction manager
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4.0/5

vistona experts ag

Insulation
✓ Offered9
Specialist planning of building waterproofing
Specialist planning for waterproofing earth-contact concrete structures, including rough concept, detailed design, interfaces, penetrations and BIM-based drawings.
Waterproofing concept and usage agreement
Advisory services, variant studies and definition of requirements; preparation of waterproofing concepts, usage agreement and maintenance concept for the structure.
Tender document preparation
Preparation of tender and bill of quantities documents for building waterproofing, including neutral or product-specific texts, as well as recording of additional costs.
BIM planning for waterproofing
BIM-based planning of waterproofing drawings, detailed representations, interface coordination, as well as cost and quality control during the construction phase.
Specialist site supervision
Organisation, coordination and supervision of execution on site, with on-site quality control and target-versus-actual comparison.
Waterproofing design-build contractor
Planning and execution of waterproofing work from a single source, including advisory services, tailor-made system solutions and implementation by specialist staff.
Execution of waterproofing work
Implementation of the planned waterproofing solutions on site, coordinated with the trades involved and the specified details.
Expert assessments and rehabilitation concepts
Expert assessments to identify the causes of water infiltration, development of rehabilitation concepts and support in implementing the measures.
Waterproofing systems and concepts
Planning of waterproofing solutions for earth-contact building components, including white, yellow, brown and black tanking as well as plastic waterproofing membranes.
Trust & reputation

ranQ Trust Score of vistona experts ag: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of November 2026

vistona experts ag scores 59.9 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.68.224%
  • 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.17.610%
  • 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.88.08%
vistona experts ag scores 85.4 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.79.212%
  • 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.90.07%
vistona experts ag scores 86.7 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).86.722%
vistona experts ag scores 14.3 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 35.14.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

vistona experts 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 1 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Diepoldsauerstrasse 20
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-287.791.037
Founded
2018 · 8 years
Last commercial register change
October 8, 2026
Employees
51 to 100

Active in 1 of 26 cantons

  • SGSt. Gallen
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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