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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesFlooring & TilingWinterthurBianco und Kiesalter Natursteinarbeiten AG
Bianco und Kiesalter Natursteinarbeiten AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Bianco und Kiesalter Natursteinarbeiten AG is a company focused on natural stone fabrication and installation. Its services include restoration, facades and walls, stair construction, floor and wall coverings, fountain installations, gravestones, sales of natural stones and stone maintenance.

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Products & services

Industry:Flooring & Tiling
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Bianco und Kiesalter Natursteinarbeiten AG

✓ Offered
8
Restoration
Restoration of historic building fabric, including restoration concepts, condition and damage surveys, planning, design and bills of quantities.
Facades and walls
Natural stone facades and natural stone walls, from designing the exterior facade to masonry with different surfaces, shading, texture and colour.
Staircases
Natural stone staircases for indoor and outdoor areas, including indoor stairs, outdoor stairs and stone stairs in various types of natural stone.
Floors and walls
Natural stone coverings for floors and wall coverings in indoor and outdoor areas, suitable for different styles, underfloor heating, terraces and paths.
Fountain installations
Fountain installations, from new builds to renovations and reconditioning, including decorative fountain design and ensuring proper function and watertightness.
Gravestones
Natural stone gravestones with individual design, handcrafted production and a respectful finish according to the wishes of the bereaved.
Natural stones
Natural stones in over 100 varieties at the Winterthur site, available at short notice and viewable for different applications.
Natural stone care
Cleaning and care of natural stone, removing paint and graffiti as well as algae, lichen, moss and discolouration; reconditioning of natural stone surfaces.
Trust & reputation

ranQ Trust Score of Bianco und Kiesalter Natursteinarbeiten AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Bianco und Kiesalter Natursteinarbeiten AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Bianco und Kiesalter Natursteinarbeiten AG scores 83.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.86.512%
  • 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%
Bianco und Kiesalter Natursteinarbeiten AG scores 85.0 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).85.022%
Bianco und Kiesalter Natursteinarbeiten AG scores 42.9 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.42.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bianco und Kiesalter Natursteinarbeiten AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

Knowledge

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Location

Stegackerstrasse 4
8409 Winterthur

At a glance

Legal form
Corporation
UID
CHE-487.329.438
Founded
2016 · 10 years
Last commercial register change
October 7, 2026
Employees
11 to 20
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.100.06%
  • 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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