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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSealing & InsulationHunzenschwilIsotech Aargau AG
Isotech Aargau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Isotech Aargau AG is the provision of sealing solutions and specialized services in the field of civil engineering and construction. This includes in particular: building seals, liquid plastic coatings, fire stops and intumescent coatings, sealant tapes, shower seals, joint seals, injections, ceramic wall and floor coverings, and PCB joint renovations. The company offers specially tailored solutions for new buildings and renovations, focusing on the needs of its customers.

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Products & services

Industry:Sealing & Insulation
✓ Offered
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Isotech Aargau AG

9
Building waterproofing
Building waterproofing for new construction and renovation, including leak detection, Combiflex sealing, liquid-applied waterproofing, bituminous coating, injections and injection hoses.
Coatings and liquid-applied waterproofing
Coatings and liquid-applied waterproofing systems for flat roofs, balconies, terraces, wet rooms, swimming pools, car park decks, oil sump linings and mast base foundations.
Fire stopping and cellulose infill insulation
Fire stopping, cable coatings, fire protection cladding, mortar barriers, soft barrier systems, fire collars, elastic fire protection joints and cellulose infill insulation.
Joint sealing
Elastic joint sealing for façades and wet rooms, including sanded joint seals and replacement of defective maintenance joints.
Shower waterproofing
Shower waterproofing with liquid-applied systems for wet rooms and adjacent areas such as balconies, terraces, flat roofs and car park decks.
Sealing tapes
Sealing tapes for façade construction at windows and other façade openings, with water-repellent films outside and vapour barrier films inside.
Structural injections
Injection technology for permanent sealing of water ingress at construction joints, cracks and penetrations, including injection hoses.
Ceramic wall and floor tiling
Ceramic wall and floor tiling indoors and outdoors, natural stone 3D mosaics, new builds, conversions, renovations, repairs and maintenance work.
PCB joint remediation
Remediation of PCB-contaminated joint seals in buildings from 1955 to 1975, with removal and proper renewal of affected joints.
Trust & reputation

ranQ Trust Score of Isotech Aargau AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Isotech Aargau AG scores 71.4 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.74.524%
  • 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.58.610%
  • 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.78.08%
Isotech Aargau 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%
Isotech Aargau 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%
Isotech Aargau AG scores 14.0 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 35.14.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Isotech Aargau AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 9 customer reviews. The data basis is 96%, 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
4.7
of 5

Aggregated from 9 reviews across all connected sources

Sources
GGoogle4.79
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Hauptstrasse 26
5502 Hunzenschwil
Opening hours
Mon
07:30 - 12:00, 13:15 - 17:00
Tue
07:30 - 12:00, 13:15 - 17:00
Wed
07:30 - 12:00, 13:15 - 17:00
Thu
07:30 - 12:00, 13:15 - 17:00
Fri
07:30 - 12:00, 13:15 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.089.783
Founded
1999 · 27 years
Last commercial register change
July 17, 2026
Employees
21 to 50
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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