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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingEmmenDach- + Thermobau AG
Dach- + Thermobau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Dach- + Thermobau AG carries out flat-roof work, offering waterproofing (polymer-bitumen membranes, plastic/elastomer membranes, liquid-applied systems), green roofs, terrace coverings, renovation solutions, sheet-metal work, lightning protection systems, maintenance services and consulting/estimating.

AI-generated
Offering

Products & services

Industry:Roofing
✓ Offered8
Flat roof coverings
Flat roof waterproofing with polymer-bitumen sealing sheets, plastic and elastomer sealing sheets, as well as liquid plastics; for efficient use and architectural design.
Green roof systems
Extensive green roof systems for flat roofs with low-growing mosses, succulents and grasses; with low maintenance and one to two inspection walks per year.
Terrace flooring
Flooring for balconies, penthouse terraces and house roofs; with slabs made of artificial or natural stone as well as wooden grates so that flat roofs can be walked on.
Flat roof refurbishment solutions
Flat roof refurbishments based on exploratory surveys and prior clarification of the circumstances; including support with grant applications for building renovations.
Sheet metal work
Building sheet metal work for flat roofs, from simple edge terminations to complex details in architectural challenges.
Lightning protection systems
Lightning protection systems to protect against direct and indirect lightning strikes and their effects on machinery and electrical end devices.
Maintenance service
Maintenance of flat roofs with inspection of drainage components, ensuring proper drainage and removing unwanted growth; also available as a subscription.
Consulting and cost estimates
Consulting on the need for refurbishment, cost calculations for different variants, and overall assessment of waterproofing solutions for flat roofs.
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3.9/5

Dach- + Thermobau AG

Trust & reputation

ranQ Trust Score of Dach- + Thermobau AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Dach- + Thermobau AG scores 55.9 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.46.524%
  • 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.52.910%
  • 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.88.08%
Dach- + Thermobau AG scores 85.5 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%
Dach- + Thermobau 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%
Dach- + Thermobau AG scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Dach- + Thermobau AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 3.4 out of 5 stars from 7 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
3.4
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle3.47
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Hasliring 15
6032 Emmen
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.803.610
Founded
1968 · 58 years
Last commercial register change
January 22, 2026
Employees
1 to 10
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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