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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSite PreparationPfungenDWT Schiemann
DWT Schiemann Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity encompasses various services in the construction sector, particularly: * Core drilling and milling * Renovation and gutting of houses, including static calculation * Bonding of CFRP laminates (structural reinforcement) * Grinding * Survey reference points in Switzerland * Carpentry work * Concrete work * Diamond tool manufacturing and trading, including diamond drill bits, diamond saw blades and diamond grinding wheels * Pick-up and delivery service Thus, the company offers a wide range of services for the construction and real estate industry.

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Products & services

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4.2/5

DWT Schiemann

✓ Offered8
Core drilling and milling
Openings for recesses, installation holes, wall and ceiling penetrations in concrete and natural stone; also angled drilling, guide post drilling and dust-free drilling with diamond tools.
Concrete works
Concrete drilling, concrete cutting and concrete milling for penetrations and installation openings, as well as construction site work, also using water for cooling and for collecting dirt.
House conversions and interior stripping with structural calculations
Building refurbishment, renovation and redesign of living spaces; interior stripping and conversions with support from a structural engineer for statics.
Bonding CFRP laminates
Ex-post strengthening of structures with CFRP laminates and epoxy adhesive; if needed, also beam inserts when lamella bonding is not possible.
Carpentry work
Installation of windows and doors as well as laying floor coverings; also subsequent openings and penetrations for new window and door solutions.
Grinding surveying reference points
Milling and grinding off tilted stone surfaces at surveying reference points; special work on natural stone with an adapted milling head and proper disposal of the material.
Toolmaking, accessories and sales
Sale of tested diamond tools and accessories, as well as reconditioning of worn core bits with new diamond segments.
Pick-up and delivery service
Collection of tools that need repair and return delivery after the repair; in an emergency, replacement tools within 24 hours.
Trust & reputation

ranQ Trust Score of DWT Schiemann: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

DWT Schiemann scores 86.7 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.89.124%
  • 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.79.710%
  • 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%
DWT Schiemann scores 71.2 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.83.012%
  • 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%
DWT Schiemann 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%
DWT Schiemann scores 1.1 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 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

DWT Schiemann reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 22 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
5
of 5

Aggregated from 22 reviews across all connected sources

Sources
GGoogle522
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Dättlikonerstrasse 5
8422 Pfungen
Opening hours
Mon
07:00 - 18:00
Tue
07:00 - 18:00
Wed
07:00 - 18:00
Thu
07:00 - 18:00
Fri
07:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-474.656.595
Founded
2017 · 9 years
Last commercial register change
July 17, 2024
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.
67.0
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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