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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryCrafts & TradesPainterWallisellenColaku AG
Colaku AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Colaku AG carries out façade insulation and renovation as well as flat-roof work. Its services include façade refurbishment, flat-roof waterproofing and roof-edge solutions.

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Service area

Offering

Products & services

Industry:Painter
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3.8/5

Colaku AG

✓ Offered3
Facade insulation
Facade insulation for new builds, conversions, repairs and renovations; façade construction, energy consulting, eco-friendly façade insulation and project planning.
Facade renovations
Facade renovations and repairs, including energy retrofits, visual refresh with paintwork, crack repair systems and preserving the value of existing façades.
Flat roof
Flat roof systems with plastic or bitumen waterproofing, liquid plastic coatings, roof edge solutions, sheet-metal terminations, roof lights, stair exits, green roofs and natural stone surfacings.
Trust & reputation

ranQ Trust Score of Colaku AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 88% · As of November 2026

Colaku AG scores 39.3 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.36.724%
  • 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.45.610%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Colaku AG scores 89.3 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.70.07%
Colaku 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%
Colaku AG scores 2.9 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 35.2.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Colaku AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 2.6 out of 5 stars from 5 customer reviews. The data basis is 88%, 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
2.6
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle2.65
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Kriesbachstrasse 3c
8304 Wallisellen
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-113.329.183
Founded
2006 · 20 years
Last commercial register change
February 27, 2025
Employees
11 to 20

Active in 1 of 26 cantons

  • 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.
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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