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

About the company

SikaBau AG is a specialist company for waterproofing, building protection and structural repair. It carries out specialist work in above- and below-ground construction and provides services such as liquid-applied and sheet waterproofing, concrete repair, corrosion protection, injections, floor and wall coatings, reservoir/tunnel/bridge waterproofing and engineered systems like Weisse Wanne and Gelbe Wanne.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Building contractor
✓ Offered8
Waterproofing
Waterproofing with injections, joint tapes, membranes, liquid plastic, sealant joints, bituminous and cementitious systems; for new build, existing structures and refurbishment.
Structural renovation and building rehabilitation
Building rehabilitation and renovation of buildings, façades and concrete components; including concrete repair, maintenance work, masonry refurbishment and surface protection.
Building protection
Building protection with protective coatings, hydrophobing treatments and protective coatings for buildings, façades as well as concrete and masonry surfaces.
Watertight concrete structures
Watertight concrete structures with Yellow Tank and White Tank systems; including project-specific consultation, construction supervision and execution.
Reservoir and basin waterproofing
Waterproofing and protective coatings for potable water reservoirs, retention and wastewater basins; including cementitious potable water coatings and smooth surface finishes.
Coatings for industrial, commercial and workshop buildings
Seamless floor and wall coatings, acid- and alkali-resistant floorings, mechanically loadable coatings and antistatic coatings.
Swimming pool waterproofing and renovations
Protective coatings, coating systems, sealing renders and custom linings for public and private swimming pools; including maintenance and repair works.
Structural strengthening
Structural strengthening with carbon fibre fabric, CFRP and steel laminates for infrastructure structures.
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4.1/5

SikaBau AG

Trust & reputation

ranQ Trust Score of SikaBau AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

SikaBau AG scores 63.4 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.67.924%
  • 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.40.910%
  • 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.78.08%
SikaBau AG scores 80.4 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%
SikaBau 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%
SikaBau AG scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

SikaBau AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 4 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
4.5
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle4.54
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Rehetobelstrasse 60
9016 St. Gallen

At a glance

Legal form
Branch
UID
CHE-492.059.925
Founded
2000 · 26 years
Last commercial register change
March 16, 2026
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • 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.
76.0
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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