Planners appreciate cross-laminated timber because of the possibility of producing simple wall, floor and roof constructions, besides its static advantages. There are the following physical advantages:
• simple layer structures, clear separation between load-bearing structure and insulation plane;
• simple joining technology;
• void-free constructions are possible;
• good air-tightness without any additional flow-tight sheets can be achieved (nearly zero energy buildings or passive houses need to be separately discussed);
• generally, no vapor retarder is required (it is needed, e.g. for flat roof constructions, apply outside the timber construction);
• decorative wood finish, thus untreated wood surfaces can be used on the inside for improving indoor climate (preferably for floor constructions);
• higher storage-effective mass in case of direct cladding or decorative wood finish.