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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsSierreIsotosi AG
Isotosi AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Isotosi SA is a provider of energy production solutions and products, particularly in the fields of building sealing, roofing, photovoltaics, masonry and landscaping, as well as security technology. The company's core activity encompasses the development, manufacture and distribution of products and services for energy production and efficiency in buildings.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered8
Insulation
Blown-in insulation, vacuum insulation, TosiTherm insulation range, acoustic improvement, dry screeds, noise protection.
Waterproofing
Resin solutions, single-layer synthetic waterproofing, pipe coatings, waterproofing systems for pitched roofs and timber construction.
Roofing
Terracotta and concrete roof tiles, slates, metal roofing systems, coloured aluminium sheet-metal work, photovoltaic solutions for roofing.
Roof Safety
INNOTECH roof safety systems, barrier systems, pitched roofs, collective fall protection, anchorage point and temporary fall-arrest system.
Drainage, gutters and supports
Gutters, supports for balconies and terraces, downpipe inlets, rodding eyes, vents and associated accessories.
Translucent components
Flat-roof outlets, domes, upstands, smoke vents and prefabricated, custom-sized roof glazing.
Green roofs
Green-roof solutions and associated systems for flat roofs.
Training and technical service
Training, service and maintenance, technical support for ISOCELL solutions and support during the projects.
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4.4/5

Isotosi AG

Trust & reputation

ranQ Trust Score of Isotosi AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Isotosi AG scores 72.0 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.68.324%
  • 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.76.210%
  • 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.78.08%
Isotosi 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%
Isotosi 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%
Isotosi AG scores 94.3 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 35.94.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Isotosi AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.4 out of 5 stars from 19 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
4.4
of 5

Aggregated from 19 reviews across all connected sources

Sources
GGoogle4.419
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Rue du Manège 3
3960 Sierre
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:30
Tue
07:00 - 12:00, 13:00 - 17:30
Wed
07:00 - 12:00, 13:00 - 17:30
Thu
07:00 - 12:00, 13:00 - 17:30
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-112.867.992
Founded
2006 · 20 years
Last commercial register change
October 21, 2025
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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