The earthquake-resistant timber alternative to concrete construction.
AI-powered high technology and superior-quality load-bearing wall panel systems
The smarter alternative to concrete.
Wood-based bio-composite panel — certified and proven.
40% lighter. 5× tougher. Lower CO₂.
Zero thermal bridges. Integrated insulation. EKB A-compliant.
For residential, commercial & public buildings.
From luxury villa to school building — European approved.
AI-optimised grid structure with integrated insulation. Zero thermal bridges, nothing extra.
AI-optimised timber load-bearing grid with integrated wood-fiber insulation
From dense load-bearing grid to open frame — graded by structural demand
Not solid CLT — an AI-optimised grid multilayer system. Wood only at load-bearing points. PEFC/FSC-certified spruce/fir (C24).
High-performance insulation integrated directly in the panel. Zero thermal bridges, TS 825 compliant. No additional external insulation.
Formaldehyde-free PUR adhesive. Approved for residential, schools and public facilities.
Manufactured with AI-controlled robotic technologies. Maximum precision, minimal waste, reproducible quality.
Wood-based bio-composite super construction — combining natural superiority against earthquakes, insulation, acoustics and fire, produced with AI-optimised robotic technologies.
CE Certificate
1359-CPR-0902
Holzforschung Austria · Unlimited
Prefabricated load-bearing insulated timber rib panels made of cross-laminated spruce/fir lamellae (C24), wood fiber insulation boards (WF, EN 13171) and SWP cover layers on both faces. European-manufactured per ETA-25/1030.
Structural verifications must be carried out by the design engineer in accordance with EN 1995-1-1. The currently valid original certificates (ETA-25/1030, 1359-CPR-0902) are authoritative.
Vapor-open wood-fiber insulation board (WF, EN 13171) — the heat-storing core of the CL-THERM system. In two densities for every application.
Lignatherm 140 / 180 · Wood-fiber insulation board
Lignatherm 140
Lignatherm 180
High heat storage capacity (2100 J/kg·K) keeps the heat out — noticeably cooler rooms in summer.
μ = 3: the structure stays breathable, moisture is regulated — no condensation, no mold risk.
Made from wood fibers from sustainable forestry. Fully biological and circular.
Turkey sits in one of the world's most active seismic zones. CL-Therm buildings are calculated for all seismic loads per TBDY-2018 Chapter 12.
The application notice in force since 1 March 2026 tightens the design of reinforced concrete buildings, and the July 2026 zoning code amendment adds new requirements for new projects. TBDY-2018 remains in force. CL-Therm is designed to the Turkish timber building regulation and TBDY-2018.
The 2026 notice sets new minimum requirements for shear walls and column dimensions in reinforced concrete projects: multi-storey RC buildings with BYS ≤ 6 need shear walls in both directions, and a column’s long side may be at most 1.5 times its short side.
These requirements are defined for reinforced concrete, not for load-bearing timber wall systems. CL-Therm is designed to the timber building regulation.
The horizontal seismic force on a building is proportional to its mass. Heavy structures have to resist larger forces.
Timber walls weigh far less than reinforced concrete. This reduces the seismic load on the structure.
Even for buildings started within 2 years of the permit, the measures required by current law on fire, earthquake, thermal and moisture insulation, environment and energy efficiency are mandatory.
CL-Therm integrates the insulation into the wall section. The efficiency target (EKB A/B) is planned together with the wall system.
Except for single-unit homes, buildings with 3 storeys must now reserve space for a lift.
CL-Therm walls are made in the factory for each project from the architect’s plan. Lift shaft and openings are in the production plan from the start.
For information only; not legal or engineering advice. The structural compliance of each project is documented by a licensed engineer under current law. As of September 2026.
Concrete resists. Wood adapts.
Applications
From luxury villas to school buildings — versatile and approved.
EKB A/B compliant. BDDK decision of 29.01.2026 enables up to 90% bank financing for residential properties up to 5M TL. Permittable under Building Code No. 3194.
Office, administrative, and mixed-use buildings. Inspection-compliant under Building Inspection Law No. 4708. CE & ETA certification — no additional individual review required.
Schools, kindergartens, healthcare, and public buildings. Suitable per MEB and ministry standards; usable as structural system under R.G. 32499.
Ideal for risk-prone building transformation and adding floors under Law No. 6306 (last updated 04.02.2026). Low dead weight is a critical advantage.
CL-Therm contributes to sustainable construction by causing lower production-related CO₂ emissions compared to reinforced-concrete building elements. The timber used is sourced from PEFC/FSC-certified sustainable forestry.
PEFC/FSC-certified sustainable forestry
Environmental Product Declaration (EPD)
Lower production CO₂ than reinforced concrete
Lower production-related CO₂ emissions than reinforced-concrete building elements.
PEFC/FSC-certified spruce and fir from sustainable forestry — two new trees for every one felled.
Fully dismountable, separable by type. No composite materials that prevent recycling.
CL-Therm complies with both Turkish and European construction standards. Low regulatory risk for investors.
CL-Therm easily meets the EKB A/B target. No other wall system offers this advantage natively.
BOI BAUORKESTRA INTERNATIONAL · ISTANBUL
European standards. Swiss precision. Turkish seismic zones.
Budget, progress, invoices and investor reports — all your CL-THERM projects on one platform, in real time.
Phases, Gantt, milestones, team.
Real-time costs, margin, deviation.
46 Yaylabağ cooperatives at a glance.
PDF reports at the click of a button.
Incoming and outgoing invoices, PDF upload.
Admin, manager, investor, client.
BOI Bau Orkestra International (also “Bauorkestra”) is a construction technology company based in Istanbul-Beşiktaş. BOI stands for AI-supported, high-tech load-bearing wall panel systems of superior quality – going well beyond classic timber construction. BOI brings the CL-THERM system to Türkiye and also delivers projects on a turnkey basis – from consultation and planning through delivery of the wall panels to the ready-to-use building. BOI works with world brands such as Lamborghini.
CL-THERM is a prefabricated, load-bearing and insulated timber wall element: cross-glued solid timber ribs in spruce/fir (C24), Lignatherm wood-fibre insulation in between and SWP cover layers on both sides. Wall thicknesses 160–320 mm, elements up to 16 m wide – CE certified (1359-CPR-0902) under ETA-25/1030.
Prefabricated timber walls are precision-made in the factory and only assembled on site. This shortens construction time, makes building largely independent of the weather and ensures consistent quality. With CL-THERM the insulation is already integrated – with a U-value of 0.366 to 0.168 W/(m²·K) depending on thickness, and down to 0.12 W/(m²·K) with additional external wood-fibre insulation.
Yes. CL-THERM can be designed to Eurocode 8 (EN 1998-1) for static and quasi-static actions including earthquakes. Timber is much lighter than reinforced concrete – less mass means lower seismic forces. The structural verification according to TBDY-2018 is carried out by the project’s structural engineer.
Load-bearing CL-THERM walls achieve up to 120 minutes of fire resistance depending on wall thickness and lining – REI 120 to EN 13501-2, known in Germany as F120. Solid timber chars in a controlled way: the char layer on the surface protects the inner section, so load-bearing capacity is maintained for a long time. The charring rate is 0.65 mm/min to EN 1995-1-2, reaction-to-fire class D-s2, d0 (EN 13501-1). In Türkiye the required fire resistance period is set by the Turkish fire protection regulation (Binaların Yangından Korunması Hakkında Yönetmelik).
Detached houses and villas, apartment buildings, offices and commercial buildings, schools and public buildings, as well as rooftop extensions where the low dead weight matters most – in service classes 1 and 2.
Send us your plans or a short project description via the contact form or WhatsApp. We will get back to you within 24 hours with a first assessment of wall build-up, quantities and schedule.
