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

About the company

The core activity of ZEMENTOL Schweiz AG is the planning, monitoring and execution of sealing solutions for concrete structures, particularly in the area of flat roofs and white tubs. This includes the creation of sealing concepts, the planning of penetration solutions, the development of crack-resistant reinforcement and the monitoring of the concrete recipe, concrete installation and after-treatment. The company also offers the delivery and installation of sealing materials and joint tapes, and assumes liability for the usability of the sealing solutions for a period of 10 years.

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Products & services

Industry:Insulation
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4.1/5

ZEMENTOL Schweiz AG

✓ Offered11
ZEMENTOL® system
Permanent watertight structural waterproofing with WU/Wd concrete, project-specific design, site supervision during construction, supply of construction materials, and 10 years' warranty and insurance cover.
White Tank (System ZEMENTOL®)
Structural waterproofing for ground-contact floor slabs and walls, for underground car parks, basement rooms and liquid tanks; including concept, detailed design, execution, joint sealing and warranty.
White Tank Plus (System ZEMENTOL®)
Secondary waterproofing for White Tanks with fresh-concrete composite film; for rooms in contact with the ground with high requirements for water-vapour diffusion, gas tightness, radon protection and sealing reliability.
White Ceiling (System ZEMENTOL®)
Watertight waterproofing solution for earth-covered concrete slabs above underground car parks and basement rooms; with consulting, design, installation of joint tapes and ten-year warranty.
HD flat roof (System ZEMENTOL®)
Watertight waterproofing solution for flat roofs and earth-covered slabs; with delayed and post-compacted concrete, inverted roof build-up, planning, execution and warranty.
Renovation (System ZEMENTOL®)
Renovation and repair technologies for damaged structures, in particular crack injection, waterproofing of water-contact surfaces and joints, and permanent restoration of watertightness.
Joint carrier (System ZEMENTOL®)
Watertight waterproofing solution for joints between existing concrete elements and a new watertight concrete structure; for movement joints and construction joints with installation and welding work.
ECO (System ZEMENTOL®)
System for strengthening industrial floors with high impermeability to liquids, high mechanical load-bearing capacity and low build-up height; also for environmental waterproofing and recycled concrete applications.
Joint sealing for White Tanks
Joint solutions with construction joint tapes, expansion joint tapes, separation pipes, predetermined crack elements and combined construction joint tape for floor, wall and connection joints.
Penetration waterproofing
Waterproofing for pipe, cable and medium penetrations using formwork pipes, annular seals, wall collars, MCT elements, pipe sleeves and floor drains.
Warranty and insurance cover
Ten-year warranty for permanent watertightness, including insurance cover for planning, workmanship, product liability and financial losses.
Trust & reputation

ranQ Trust Score of ZEMENTOL Schweiz AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

ZEMENTOL Schweiz AG scores 64.2 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.76.724%
  • 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: 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.50.08%
ZEMENTOL Schweiz 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%
ZEMENTOL Schweiz 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%
ZEMENTOL Schweiz 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

ZEMENTOL Schweiz AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 5 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 5 reviews across all connected sources

Sources
GGoogle55
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Kanzleistrasse 6
9443 Widnau
Opening hours
Mon
07:30 - 17:00
Tue
07:30 - 17:00
Wed
07:30 - 17:00
Thu
07:30 - 17:00
Fri
07:30 - 13:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-115.452.297
Founded
2010 · 16 years
Last commercial register change
October 7, 2024
Employees
21 to 50

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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