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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesGlazierZurichGlas Tustonja GmbH
Glas Tustonja GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Glas Tustonja GmbH carries out glazing work for private customers and businesses. Its services include shower enclosures, glass walls and doors, balcony and shop-window glazing, made-to-measure mirrors, decorative glass and repairs.

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Service area

Offering

Products & services

Industry:Glazier
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4.3/5

Glas Tustonja GmbH

✓ Offered6
Glazing of all kinds
Glazing for private individuals and businesses, including on-site consultation, planning, fabrication as well as new installations and repairs.
Shower doors and shower enclosures
Shower doors, shower enclosures and shower panels made of clear glass or frosted glass, also as made-to-measure solutions for bathrooms.
Glass walls, glass doors and kitchen splashbacks
Glass walls, glass doors, kitchen splashbacks and office partitions made to measure for interiors, terraces and commercial areas.
Balcony glazing and balcony railings
Balcony glazing, balcony railings and glass solutions for balconies and outdoor areas, including individual custom-made items.
Insulated glazing, safety glass and glass canopies
Insulated glass units, safety glass, shop windows, glass canopies, entrance awnings and cat flaps, including new installations and repairs.
Mirrors made to measure, furniture and decorative glass
Mirrors made to measure, display cabinets, table tops, decorative glass, sideboards and plexiglass for interior fit-out and living areas.
Trust & reputation

ranQ Trust Score of Glas Tustonja GmbH: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of November 2026

Glas Tustonja GmbH scores 76.1 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.80.624%
  • 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.55.910%
  • 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%
Glas Tustonja GmbH scores 83.0 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.55.07%
Glas Tustonja GmbH scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Glas Tustonja GmbH 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

Glas Tustonja GmbH reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 8 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 8 reviews across all connected sources

Sources
GGoogle58
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Bucheggstrasse 168
8057 Zurich
Opening hours
Mon
09:00 - 17:00
Tue
09:00 - 17:00
Wed
09:00 - 17:00
Thu
09:00 - 17:00
Fri
09:00 - 17:00
Sat
Closed
Sun
09:00 - 17:00

At a glance

Legal form
Limited Liability Company
UID
CHE-112.850.537
Founded
2006 · 20 years
Last commercial register change
January 8, 2019
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • ZHZurich
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.
88.0
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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