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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSealing & InsulationWidnauwaprotec ag
waprotec ag Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of waprotec is the execution of sealing work in the construction industry, particularly in the planning, implementation and execution of sealing concepts for buildings, as well as in the renovation and conversion of existing buildings. The company offers a comprehensive range of services in sealing technology, including the use of modern sealing products and the development of individual solutions for customers.

AI-generated
Offering

Products & services

Industry:Sealing & InsulationGlass, Ceramics, Stone & Construction Materials Industry
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4.0/5

waprotec ag

✓ Offered12
Implementation of waterproofing concept
Execution and implementation of waterproofing concepts for structures below ground level, including checking feasibility, on-site supervision, and documentation of waterproofing components.
Specialist site supervision and quality management
Specialist site supervision, monitoring concrete placement works, reviewing waterproofing plans, and ensuring execution in accordance with SIA.
Renovations
Renovation of leaks and repair of water-tight structures, including long-term elimination of defects and causes of damage.
Refurbishments
Waterproofing and re-waterproofing during refurbishments, including box-in-box solutions, repair of existing components, and interior-side waterproofing.
Partner to the general contractor
Collaboration with general contractors on new builds and in existing buildings, including installation, monitoring concrete works, documentation, and quality management on site.
BIM execution
Execution of waterproofing projects with BIM, including use of specialist planner data, control of construction progress, and comparison of target and actual status.
Water-tight concrete
Water-tight concrete sealing, including watertight joints and pipe penetrations for structures below ground level.
Construction joint sealing strip
Sealing construction joints with sealing strips for water-tight concrete structures, with high stretch capacity and without subsequent injections.
Expansion joint sealing strip
Water-tight sealing of movement joints in reinforced concrete with PVC-P expansion joint sealing strips against hydrostatic pressure water.
Fresh concrete bonding membrane
Sealing of earth-contacting components with a fresh concrete bonding membrane as an addition to the Weisse Wanne, with crack bridging, backflow protection, and an additional water vapour barrier.
Pipe penetration
Watertight pipe penetrations in structures below ground level, tailored to standard requirements and movements in the connection area.
Sealing tapes and adhesive systems
Sealing of construction joints, expansion joints, and cracks with tape-and-adhesive systems, also for corners, edges, and different types of movement.
Trust & reputation

ranQ Trust Score of waprotec ag: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 88% · As of October 2026

waprotec ag scores 53.3 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.68.224%
  • 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.17.610%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
waprotec ag scores 94.3 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.90.07%
waprotec 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%
waprotec ag scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

waprotec ag reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 88%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Bahnhofstrasse 21
9443 Widnau
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 18:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-102.195.412
Founded
2001 · 25 years
Last commercial register change
September 14, 2022
Employees
51 to 100
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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