flat roofs with CLT BBS

binderholz CLT BBS is ideal for every shape of roof. Cantilevers or openings can be constructed with ease, thanks to the millimetre-precise CNC-cut and dual-axis load-bearing effect of the elements. Rain-tight buildings and finished visible surfaces indoors can be quickly produced with ease. BBS roof constructions reliably and soundly meet all static, fire resistance and air-borne sound insulation requirements. As BBS provides good thermal insulation and simultaneously outstanding thermal storage, it helps to provide a cosily warm room temperature in winter, as well as ideally helping to prevent the building from overheating in summer (summer thermal insulation). CLT BBS is a completely solid, multi-ply board made of wood. Bonding longitudinal and transverse layers together reduces the „movement“ of the wood, that is its swelling or shrinkage, to a negligible degree. The solid finished element can bear heavy loads, is fire-proof, can quickly be fitted dry and has sound and thermal damping properties. Execution using BBS provides structural benefits, such as self-supporting and dry construction methods, horizontal and vertical load transferring effect, dimensionally stable elements, and adequate fire resistance and acoustic insulation, as well as finished visible surfaces and a high degree of living comfort from the positive effect of the large area of timber on the indoor climate. BBS element on a mineral-based wall with cantilever BBS element on a mineral-based wall without cantilever (refer also to binderholz CLT BBS processing guideline www.binderholz.com/en-us ) The Solid Timber Manual 2.0 includes over 50 tested roof structures, the structural properties of which have been tested and rated with environ- mental performance figures. All ratings, construction details, as well as other roof structures, can be found at www.massivholzhandbuch.com/en. FLAT ROOF CONSTRUCTION - Not back-ventilated - No installation layer binderholz for FLAT ROOFS STRUCTURAL AND ENVIRONMENTAL RATING Fire resistance REI 30 max. span width l = 4 m max. load (q fi, d ) = 7.92 [kN/m 2 ]; IBS classification Thermal insulation U[W/m 2 K] 0,14 Diffusion behaviour suitable m w,B,A [kg/m 2 ] 38,6 HFA calculation Noise insulation R w 57 L n,w – Environmental rating OI3 Kon 47,6 IBO calculation