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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryIndustryBuilding materials manufacturerChamDiadem CH AG
Diadem CH AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Diadem CH AG develops, manufactures and markets green roof systems and related products, as well as DiaSafe® safety systems for work on roofs. It also offers tailored services.

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Presence

Service area

Offering

Products & services

Industry:Building materials manufacturer
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Diadem CH AG

Building materials dealer
✓ Offered10
Green roofs
Green roof systems for extensive, semi-intensive and intensive greening; with layers, plants, substrates and solutions for rainwater retention, microclimate and land use.
Blue roofs
Blue roof systems for the temporary storage of rainwater, with delayed discharge or on-site use; for rainwater management, water saving and climate resilience.
Safety roofs and fall protection
Safety roofs with fall arrest anchor points, securing systems and collective protection; for work on roofs without penetrating the roof membrane.
Biosolar roofs
Biosolar roofs with integrated photovoltaic or solar thermal systems; for generating electricity or heat on green roofs.
Vertical greening
Vertical greening for façades and walls, using DiaWall systems for wall greening and green walls.
Planning service within 72 hours
Free technical planning for fall protection, green roofs, blue roofs and PV mounting systems; with project documents, technical review and a proposal within 72 hours.
Green roof products
Layer components, drainage and drainage solutions, edges, terrace components as well as accessories and technical documentation for green roofs.
DiaSafe® fall arrest and anchoring systems
Fixed and roof-layer-supported anchoring systems for fall protection, tested according to relevant standards for work on the roof.
DiaSafe® collective protection
Ballasted safety guardrails and modular protection systems for roof edges, without interference with the roof layers.
Photovoltaic mounting systems for green roofs
Mounting systems for photovoltaic installations on green roofs, designed for combining greening and solar energy.
Trust & reputation

ranQ Trust Score of Diadem CH AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Diadem CH AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Diadem CH AG scores 67.5 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.58.012%
  • 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%
Diadem CH 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%
Diadem CH 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

Diadem CH AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

Knowledge

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Location

Hinterbergstrasse 17
6330 Cham

At a glance

Legal form
Corporation
UID
CHE-392.103.425
Founded
2022 · 4 years
Last commercial register change
September 5, 2025
Employees
1 to 10

Active in 1 of 26 cantons

  • ZGZug
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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