Manufacturer
| Product groups: | I-joists / double-T girders | ||
| Description of the area of application: | The U*psi insulation joist is a load-bearing, thermal-bridge-reducing element used to span the insulation layer on walls and roofs. It is suitable for use in front of load-bearing walls made of timber, masonry, or concrete—both in new constructions and energy-efficient renovations. Type F, with fixed rails, is optimized for flush and plumb surfaces, while Type S, with its adjustable rail, enables precise façade alignment even on uneven existing walls. The elements create installation-friendly cavities for insulation and can also serve as an adjustable substructure for interior fit-outs. | ||
| Product description of manufacturer: | U*psi F / S is a ladder-shaped insulation post element made of genuine wood rungs and rails, cross-laminated in the style of cross-laminated timber (CLT)—but with wide spacing between the individual lamellae. The insulation layer is only penetrated at discrete points, making it a solution with minimal thermal bridging. Type F, with fixed rails, is suitable for even substrates, while Type S, featuring an adjustable alignment rail, can also be used on uneven existing walls. | ||
| Product photos: | 
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| Ingredients according to natureplus declaration rules: | solid wood solid wood board wood fibre board glue | ||
| Designation of origin of the main ingredients: | PEFC-certified softwood (spruce, fir) from the Black Forest and southern Germany. Solid wood panels preferably from regional or European sources, all from controlled supply chains. Wood fiberboards made from residual and fresh wood supplied by local manufacturers. Low-emission PU adhesives are used in accordance with natureplus requirements. | ||
| Link to product on the manufacturer's homepage: | https://lignotrend.com/produkte/fassade/daemmstaender | ||
| Format l x w: | 2.940 mm x 160 mm 2.940 mm x 200 mm 2.940 mm x 240 mm 2.940 mm x 300 mm | ||
| thickness: | 6 cm | ||
| Dimensions (description): | LIGNO ® U*psi F / S Dämmständer bestehen aus zwei Holmen und Sprossen mit einer Gesamtlänge von 2940mm. Die Dicke beträgt ca. 60mm, die Breite je nach Typ 160 bis 300mm (F) bzw. 120 bis 240 mm justierbar (S). Der Sprossenabstand liegt bei ca. 440mm. | ||
| Construction drawing with dimensions: | LIGNO_Upsi_F.jpg (475 KB) | ||
| λr thermal conductivity rated valueAUT: | not specified | W/(m·K) | |
| λacc. to DIN 4108-4: | 0,12 | W/(m·K) | |
| ρ density: | 385 | kg/m³ | |
| c specific heat capacity: | 1600 | J/(kg·K) |
| natureplus product test: |
The natureplus product test is considered the most comprehensive sustainability test for building materials in Europe:
✓ Verification of all information at the manufacturing plant
✓ Laboratory analysis and expert reports by accredited partners ✓ Regular repeat tests | ||
| healthy living: |
Building products with the natureplus label do not harm the environment or human health with pollutants and, in particular, ensure healthy indoor living spaces.
✓ AgBB scheme Germany (laboratory analysis of emissions according to EN 16516)
✓ EU taxonomy ✓ QNG-compliant * *Exception: cellulose products containing boron do not currently comply with QNG. | ||
| climate protection: |
The manufacture of building products is environmentally friendly and energy efficient, thus contributing to climate protection and CO2 avoidance, and fulfilling social responsibility. The products must be fit for use and recyclable.
✓ CO2 footprint (CFP according to EN 14067) is below the average for comparable products.
✓ Primary energy requirement is below average for comparable products. ✓ Above-average use of renewable energies in production. | ||
| ressource conservation: |
Only construction products made from at least 85% renewable or abundant mineral raw materials or secondary raw materials are eligible. The raw materials must come from sustainable sources.
✓ Social requirements are checked at the production sites.
✓ Investigation of upstream suppliers in the supply chain. ✓ Reuse and recycling through material quality and dismantling instructions. | ||
| recognition and documentation: |
Recognition: Further information on label recognition in building certification systems and subsidy programs:
https://www.natureplus-label.org/anerkennungen
Documentation: The natureplus Sustainability Passport complements the natureplus eco-label with a standardized, third-party verified document for simplified documentation:
https://www.natureplus-label.org/sustainability-passport | ||
 certificate valid until June 30, 2029 Certificate no.: 0211-0606-014-1 Status: zertifiziert Issuance Guidelines: 0211 |
 PDF (339 KB) valid until June 2027 |
| Technical data sheet: | 2023_07_05_TD_Upsi_F_S_de.pdf (1,10 MB) issued on July 5, 2023 | ||
| General Technical Approval (Germany): | valid until Feb 11, 2030 Registration number: Z-9.1-555 | ||
| declared since: | Jan 15, 2015 | ||
| Amended: | June 6, 2025 | ||
| baubook product index: | 9392 af | ||
| version history: | öffnen | ||
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