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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingLosoneGiacomazzi e Ruffini SA
Giacomazzi e Ruffini SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Giacomazzi e Ruffini SA is a timber construction and roofing company that provides traditional carpentry, wood structures, roofing, refurbishments and thermal insulation. Its services also include Velux roof windows, photovoltaic installations, as well as consulting and planning.

AI-generated
Offering

Products & services

Industry:Roofing
✓ Offered8
Roofing
Roofing with tiles, fibre-cement boards, slate, mediterranean coppi and metal roofing covers; including sheet-metal works, fixings for solar panels, fall protection, under-roofing and thermal insulation.
Renovations
Facade and roof renovations, replacing or adding thermal insulation and under-roof membranes; on request, coordination with additional trades and preparation of documents for grants.
Advisory and planning
Personal consultation, cost estimate, project planning, 2D and 3D drawings, thermal calculations and support with straightforward building applications and grants.
Thermal insulation
Laying insulating materials on roofs, slabs and facades to reduce energy losses, improve living comfort and protect against summer heat.
Cladding and flooring
Wood cladding for facades, ceilings and exterior areas; cladding in fibre cement, sheet metal or other similar materials, including ventilated facades with the corresponding insulation.
Velux windows and dormers
Installation of Velux windows, adaptation of existing roofs and mounting of dormers or skylights according to requirements and local regulations.
Photovoltaic systems
Photovoltaic systems integrated into the roof, with reinforcements, cable-duct passages and sheet-metal work; installation coordinated with the existing roof covering.
Roof inspections, repairs and maintenance
Roof covering inspections, cleaning of gutters and valleys, repairs and maintenance contracts to prevent leaks and structural damage.
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4.1/5

Giacomazzi e Ruffini SA

Trust & reputation

ranQ Trust Score of Giacomazzi e Ruffini SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Giacomazzi e Ruffini SA 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%
Giacomazzi e Ruffini SA 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%
Giacomazzi e Ruffini SA scores 83.3 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).83.322%
Giacomazzi e Ruffini SA scores 31.4 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 35.31.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Giacomazzi e Ruffini SA 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 October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Knowledge

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Location

Via Mezzana 45
6616 Losone

At a glance

Legal form
Corporation
UID
CHE-106.307.420
Founded
1988 · 38 years
Last commercial register change
June 10, 2021
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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