Ceilings & light coves
Bulkheads, double levels, indirect-light coves, contemporary cornices — framing designed for the light.
QUASART · InteriorsHigh-end
High-end
interior finishes
Light coves, bulkheads, contemporary cornices, Level-5 skim finishes, lacquers — QUASART executes to the millimetre what interior architects and decorators design. In Luxembourg and the Greater Region.
Q4Finish level mastered
100 %Witness areas before roll-out
Interior finishes
The designer’s drawing lives or dies in the execution
A light cove whose line waves, a ceiling that telegraphs under raking light, an edge that is not crisp: in interior design, the execution detail IS the luxury. QUASART brings to interior architects and decorators what facade work taught us — laser-checked flatness, string-line edges, pride in the gesture. Our plasterers execute contemporary plaster features: light coves, bulkheads, double-level ceilings and straight cornices, in board and plaster, with lighting profiles integrated from the framing stage.
The finish level has a name: Q4 — the full-surface skim intended for raking light, satin lacquers and deep colours that forgive nothing. We practise it with its real requirements — skim across the entire surface, mechanical sanding, inspection under raking light — and we say it honestly: Q4 belongs where it will be seen; a careful Q3 is enough elsewhere. Moulded ornamental plaster — ceiling roses, period mouldings, heritage restoration — is a specialist workshop craft: we integrate it into projects with partners, under our coordination, rather than imitating it.
Our way of working with designers is simple: finish samples and witness areas before generalising, clean phasing with other trades, systematic protection, handover under the final lighting. Based in Crauthem, we operate across the Grand Duchy and the Greater Region. AXA decennial insurance (policy 10/0214108). QUASART S.à r.l., Luxembourg Trade Register B253631.
Our services
What we execute for designers
Level-5 skim finishes
Full-surface skim for raking light, lacquers and deep colours. Inspected under raking light.
Paints & lacquers
Stretched lacquers, deep velvets, bespoke colours — the culmination of a perfect substrate.
Invisible acoustic comfort
Acoustic ceilings and linings integrated into the design — performance without showing it.
Zones proches
QUASART executes across the whole of Luxembourg
FAQ
Frequently asked questions — Interior finishes
Yes — it is the heart of our high-end plastering. Indirect-light coves sized for the chosen light source, bulkheads and double-level ceilings on metal framing, straight contemporary cornices, joints treated for a perfectly continuous line. Lighting profiles are integrated from the framing stage, in coordination with the electrician — never retrofitted.
Honestly: moulded ornamental plaster (ceiling roses, period mouldings, heritage restoration) is a specialist workshop craft. We do not imitate it — we integrate it into the project with specialist partners, under our coordination, when the design calls for it. Our own territory is contemporary plasterwork: coves, bulkheads, straight cornices, sculpted ceilings in board and plaster.
Q4 — Level 5 — is the highest finish level for boarded surfaces: a skim coat across the entire surface, sanded, meant to remove any visible trace under raking light. It belongs where light grazes the surface — ceilings with light coves, walls receiving satin lacquer or deep colours, halls washed with natural light. Elsewhere, a careful Q3 is sufficient and protects the budget: we advise room by room, honestly.
Yes — it is our favourite configuration: a designer who draws, us who execute. We price from drawings and detail booklets, propose witness areas before generalising, contribute to technical coordination (luminaire integration, invisible access panels, shadow gaps at wall bases) and hand over under the final lighting. The designer keeps creative control from start to finish.
On our packages, yes: plastering, skim coats, painting and acoustics move under one direction, with clean phasing — no sanding after painting has started, no lacquer before substrates have stabilised. For specialist packages (moulded plaster, cabinetmaking, decoration), we integrate our partners into the programme under our coordination: the client keeps a single point of contact.
Yes. AXA decennial insurance (policy 10/0214108) covering plastering, skim finishes, painting and ceilings on every project in Luxembourg, France and Belgium. QUASART S.à r.l. is registered with the Luxembourg Trade and Companies Register under B253631, VAT LU33087966. Certificates provided on request.