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DirectoryConstruction & ArchitectureTimber Construction & CarpentryBaselQuadra Ligna AG
Quadra Ligna AG Logo
Verified· 4 sources

Quadra Ligna AG

Summary

About the company

The core activity of Quadra Ligna AG is the renovation and reconstruction of windows and doors, particularly in architecturally valuable buildings and those under monument protection. The company offers consulting, planning and professional implementation of renovation projects to preserve the original substance while improving thermal insulation.

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Offering

Products & services

Industry:Timber Construction & CarpentryJoinery
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Renovating windows
Renovation of historical wooden windows with insulating glazing, retaining the frames, fittings and appearance; improved energy performance, sound insulation, airtightness and maintenance.
Reconstructing windows
Reconstruction of historical windows when renovation is no longer practical; rebuild based on the original, documents or photos, with a visually authentic result.
Upgrading doors
Renovation of historical entrance doors and flat doors while preserving the appearance; energy and safety upgrades, and adaptation to fire protection requirements.
Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

May 19, 2026Media
CO₂ sparen und Denkmäler bewahren mit Quadra Ligna
bilanz.ch

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Location

Horburgstrasse 28
4057 Basel
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 15:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-425.457.174
Founded
2019 · 7 years
Last commercial register change
July 10, 2019
Employees
1 to 10

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