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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesFlooring & TilingBischofszellBrumma AG
Brumma AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Brumma AG supplies thermal insulation materials and related accessories for buildings, including products for pitched roofs, flat roofs, floors, walls/ceilings and specialised items such as ThermoWhite for pools and BRUMMA Boundsplitt 19. The product range includes EPS, XPS, PIR and mineral wool insulations; the company also provides installation planning support, a laying service and downloadable product datasheets.

AI-generated
Offering

Products & services

Industry:Flooring & Tiling
✓ Offered5
Insulation for floors, roofs, walls and ceilings
Insulation materials and accessories for floors, flat roofs, pitched roofs, as well as walls and ceilings; EPS, XPS, PIR, glass wool, stone wool and vacuum insulation, sealing membranes, edge strips and further accessories.
ThermoWhite
ThermoWhite insulation systems for construction and pools, including ThermoWhite Pool, loose-fill insulation methods and insulation material for hard-to-reach areas.
Installation service
Support with the installation of insulation materials; organising qualified partners and coordinating the flawless execution.
Installation planning and material requirement calculation
Support with installation planning and the determination of material requirements, especially for thin floor insulation such as JOCO.
BRUMMA Boundsplitt 19
Boundsplitt for improving sound insulation in timber construction; with assessment confirmation ECO D and flyer information.
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4.3/5

Brumma AG

Trust & reputation

ranQ Trust Score of Brumma AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Brumma AG scores 78.2 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.71.924%
  • 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.95.08%
Brumma AG scores 78.3 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.95.212%
  • 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%
Brumma 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%
Brumma AG scores 60.0 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 35.60.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Brumma AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 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
4.5
of 5

Aggregated from 22 reviews across all connected sources

Sources
GGoogle4.522
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Im Brühl 5
9220 Bischofszell
Opening hours
Mon
07:30 - 12:00, 13:15 - 17:15
Tue
07:30 - 12:00, 13:15 - 17:15
Wed
07:30 - 12:00, 13:15 - 17:15
Thu
07:30 - 12:00, 13:15 - 17:15
Fri
07:30 - 12:00, 13:15 - 17:15
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-357.521.982
Founded
2013 · 13 years
Last commercial register change
February 18, 2013
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.
76.0
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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