Natural solid wood
Douglas, Red Cedar, Larch, Scots pine treated class 3.2. Natural wood weathers over time to a silver-grey or can be maintained oiled. Lifespan: 30-50 years with maintenance.
Wood cladding — ventilated facadesNatural wood,
Natural wood,
thermally modified
& composite
Solid, thermally modified, composite — QUASART designs and installs custom wood envelopes in Luxembourg and the Greater Region. Each choice depends on exposure, desired maintenance and architectural ambition.
DTU 41.2PEFC / FSCClass 3+RE 2020
DTU 41.2Reference standard
15+ yrsWood experience
3+ countriesCoverage
Why wood?
The material that breathes with the building.
Wood remains the oldest and most resilient cladding material in the world. Its ability to integrate into any architectural context, from Alpine chalets to contemporary office buildings, its natural hygrothermal regulation and its negative carbon footprint make it a first-choice material for sustainable facades in Luxembourg and the Greater Region.
QUASART, based in Crauthem (L-3327), masters the three main families: natural solid wood (Douglas, Red Cedar, larch), thermally modified wood (Thermowood, Retification, Scots pine at 215 °C) and wood composite (WPC wood-polymer). Each choice depends on the facade exposure, the maintenance accepted by the client and the aesthetic ambition of the project.
Wood · Material sheet
Données certifiéesNatural durability8.0
Thermal insulation9.2
Carbon footprint10.0
Dimensional stability7.5
Maintenance requiredVariable
Available species5+
Durability classesClass 2 (Red Cedar) to 3 (Douglas, larch)
Board thicknesses18 mm (standard), 22 mm (reinforced), 27 mm (solid)
Useful widths70 to 200 mm depending on installation profile
LengthsUp to 6,000 mm — custom finger-jointing
Fire ratingD-s2,d0 natural — B with fire retardant
Thermal conductivityλ = 0.12 to 0.18 W/m·K — natural insulator
DTU 41.2NF EN 350NF EN 335PEFC / FSCNF B 51-006RE 2020
QUASART selection
The species we master
Each species has its character, strengths and ageing process. QUASART selects wood according to the technical and aesthetic requirements of the project.
01 / QUASART SELECTION
Douglas
Pseudotsuga menziesiiDurability7.5
Stability8.0
Aesthetics7.0
European resinous species of class 3, naturally durable without treatment. Pinkish tone evolving to silver-grey. Excellent mechanical resistance. The most installed species by QUASART in Luxembourg.
Popular02 / QUASART SELECTION
Red Cedar
Thuja plicataDurability9.0
Stability9.5
Aesthetics9.5
The king of cladding. Naturally rot-resistant, extremely stable, lightweight and easy to work with. Warm copper tone, fine grain. No treatment needed. The highest initial investment but the longest lifespan (50+ years).
Premium03 / QUASART SELECTION
Thermopin
Thermally modified Scots pine 215 °CDurability8.8
Stability9.2
Aesthetics8.0
Heat treatment at 215 °C without chemicals. Removes wood sugars, stopping all biological activity. Uniform and stable chocolate-brown appearance. Naturally class 3.2. Sustainable alternative to exotic woods.
Eco-friendly04 / QUASART SELECTION
Composite WPC
Wood fibres + recycled polymerDurability9.8
Stability9.9
Aesthetics7.5
Blend of wood fibres and recycled polymer. Zero maintenance, total UV and moisture resistance, available in many colours. Wood look guaranteed for 25 years. Ideal for collective and commercial projects.
Zero maintenance05 / QUASART SELECTION
Yakisugi
Shou Sugi Ban — charred woodDurability9.2
Stability8.5
Aesthetics10.0
Ancient Japanese technique of surface charring. The burning creates a natural protective layer, rot-resistant and insect-repellent. Deep matte black, uniquely cracked texture. Each board is a work of art. Reserved for exceptional architectural projects.
SignatureFinishes & appearances
From living wood to signature facade.
Wood ageing is not a defect — it is a signature. Each finish offers a unique character.
Heartwood
Heartwood DouglasClass 3 — pure heartwood, no treatment
Natural
Natural larchTight grain, resistant, golden
Western
Western Red CedarCopper-toned, stable, rot-proof
Accoya®
Accoya® acetylatedRecord stability, 50-year warranty
Thermopin
Thermopin 215 °CChocolate brown, chemical-free
Yakisugi
Yakisugi (Shou Sugi Ban)Japanese charred wood, deep black
Referenced suppliers
The brands we specify.
QUASART works with suppliers selected for their quality, traceability and availability in Luxembourg.
Premium thermally modifiedEstonia · Benchmark · PEFC
THERMORY
Benchmark · Thermo-D · Thermo-SEstonian leader in thermally modified wood. Patented Benchmark process — dimensional stability and class 3 durability without chemicals. Widely specified by architects in the Benelux.
Benchmark — advanced thermal modification, pine or ash
Thermo-D — intensive treatment, dark brown appearance
Thermo-S — moderate treatment, lighter shade
PEFC certified — full traceability
Modified wood · NorwayNorway · Class 1 · 30 years
KEBONY
Clear · CharacterNorwegian wood modification technology using furfuryl impregnation — softwood transformed into hardwood. Eco-friendly alternative to exotic woods. Durability class 1, 30-year warranty.
Clear — modified radiata pine, knot-free
Character — modified Scots pine, visible knots
Durability class 1 — like teak
30-year warranty — Cradle to Cradle certified
French cladding · ProximityFrance · Pre-painted · Proximity
SILVERWOOD
Élégance · Atmosphère · PiveteauFrench manufacturer (Piveteau Bois Group) specialising in cladding. Factory pre-painted and pre-stained ranges — immediate installation, guaranteed finish. Ideal logistic proximity for the Greater Region.
Élégance — pre-painted cladding, 40+ colours
Atmosphère — factory stain, natural look
French Douglas and spruce PEFC
Fast delivery Greater Region
Premium composite · FinlandFinland · Recycled · 25 years
UPM PROFI
Piazza · Façade · Design DeckPremium Finnish wood-polymer composite. 60% recycled materials. Realistic wood appearance, zero maintenance, UV resistance certified 25 years. Façade range specifically designed for ventilated cladding.
Façade — composite boards for ventilated cladding
60% recycled materials (wood + PP)
25-year UV and fade warranty
Colours: brown, grey, black, sand — matte velvet
Product families
Natural wood, thermally modified or composite — three approaches, one expertise.
Thermally modified wood
Heat treatment (180-220 °C) without chemicals. Stabilised, naturally class 3.2. Thermowood, Plato Wood, Accoya®.
Wood-polymer composite
Wood fibres + recycled polymer. Zero maintenance, UV resistance, many colours. 25-year warranty.
Horizontal boards
Open-joint or tight-joint installation. Horizontal graphic effect that visually lengthens facades.
Vertical boards
Visually elevates volumes. Contemporary look. Ideal on gable ends and tall facades.
DTU ventilated facades
Ventilated frame, minimum 20 mm air gap. Compliant with DTU 41.2 and DTU 31.2. Natural moisture evacuation.
Installation
Installation techniques
The installation technique defines the visual character of the facade as much as the wood species.
01
Open-joint cladding
Spaced boards allowing light and air through. Remarkable shadow and light play. Open joint 8-15 mm. Dark visible rain screen recommended.
Joint 8-15 mm · Dark rain screen02
Tight vertical cladding
Edge-to-edge boards without spacing. Monolithic and mineral facade. Sober and contemporary look. Concealed or visible fixings depending on design.
Closed joint · Concealed fix. possible03
Lap cladding
Overlapping boards (weatherboard style). Scandinavian and North American tradition. Excellent natural weatherproofing. Horizontal installation only.
Weatherboard · 25 mm min. overlap04
Herringbone / mixed
Alternating horizontal/vertical or diagonal installation. Custom geometric patterns. Reserved for prestigious architectural projects.
Custom · Layout plan mandatory05
Curved cladding
Hot bending or glulam for curved facades. Unique sculptural effect. Requires specific expertise and 3D layout planning.
Bending · Glulam06
Finish & treatment
Stain, oil, saturator or microporous paint. Each treatment alters appearance and lifespan. Yakisugi (charred wood) for a unique deep black.
Oil · Stain · YakisugiTechnical framework
Standards & regulations
Every QUASART installation complies with standards applicable in Luxembourg and France.
DTU 41.2
Exterior wood cladding
Unified Technical Document defining the design and installation rules for timber cladding. The absolute reference for any installation in France and Luxembourg.
NF EN 350
Natural durability classes
Classification of biological durability of solid wood. Douglas = class 3, Red Cedar = class 2, Oak = class 2. Determines the wood's resistance to fungi.
PEFC / FSC
Wood origin and traceability
Sustainable forest management certifications. QUASART exclusively uses PEFC or FSC certified wood to guarantee supply chain traceability.
NF EN 335
Use classes
Defines wood usage conditions (classes 1 to 5). Facade cladding corresponds to class 3: exterior wood, no ground contact, exposed to weather.
NF B 51-006
Structural wood classification
Visual grading standard for construction timber. Determines the mechanical resistance of the framework and cladding boards.
RE 2020 / GPE
Thermal regulation
Wood is a bio-sourced material that stores CO₂. Its integration into a ventilated facade contributes positively to the building's carbon footprint under RE 2020 and Luxembourg GPE.
Application areas
Every project has its wood cladding
01
Individual houses & villas
High-end individual housing. Douglas, Red Cedar or composite depending on budget and exposure. Full customisation of species, installation and finish.
02
Collective housing VEFA
Property development programmes. Composite or thermally modified to minimise co-ownership maintenance. Layout compliant with building permit.
03
Commercial & public buildings
Offices, retail, public facilities. Fire rating per Luxembourg regulations. Fire retardant treatment available for projects with specific fire constraints.
04
Facade renovation
Ventilated wood cladding is the ideal solution to replace ageing render. The ventilated frame insulates and protects the existing facade without major work.
05
Signature projects
Exceptional architectural projects: curves, geometric patterns, mixed facades. QUASART supports architects in realising their most ambitious concepts.
Selected projects
Wood cladding in context
Heartwood Douglas · Oiled
Residential · 2023Villa BertrangeBertrange, Luxembourg · 340 m²
Natural larch
Residential · 2023House StrassenStrassen, Luxembourg
Accoya® acetylated
Commercial · 2022Kirchberg ExtensionKirchberg, Luxembourg
Charred Douglas
Residential · 2022Redange ChaletRedange-sur-Attert, Luxembourg
WPC Composite
Collective · 2024Mondorf ResidenceMondorf-les-Bains, Luxembourg
Oiled larch
Commercial · 2024Esch-Belval OfficesEsch-sur-Alzette, Luxembourg
Wood is not a cladding — it is a living material that dialogues with the building, the climate and time.QUASART — Material philosophy
FAQ
Your questions about wood cladding
Technical and practical aspects of wood cladding in Luxembourg
West-facing is the most demanding (driving rain). Red Cedar and thermally modified wood are the best choices. Heartwood Douglas also works with a high-performance rain screen and ventilated air gap compliant with DTU 41.2. Composite is the zero-risk solution.
Untreated natural wood cladding (Douglas, larch) requires no maintenance if you accept its weathering to silver-grey. To retain the original colour, facade oil is applied every 2-3 years. Thermally modified wood requires little or no maintenance. Composite requires no maintenance at all.
Yes, perfectly. Luxembourg's climate is favourable for wood cladding. The recommended species withstand temperature variations and humidity without issue, especially in a ventilated facade system compliant with DTU 41.2.
Absolutely. Mixed facades are very trendy. Wood pairs well with zinc (roof, relief), fibre cement (upper floors), brick/concrete (plinths). QUASART regularly creates multi-material facades.
Natural wood ages (noble silvering or regular oiling). Composite doesn't change but lacks the warmth of a living material. Natural wood has a negative carbon footprint (CO₂ storage). Composite comes from recycling. The choice depends on your aesthetic sensitivity and your tolerance for maintenance.
Costs range from 120 to 280 EUR/m² installed, depending on species, complexity and installation type. Douglas: 120-180 EUR/m². Red Cedar: 200-280 EUR/m². Thermally modified: 150-220 EUR/m². Composite: 160-250 EUR/m². QUASART provides a precise quote after studying your project.
Areas of operation