Allthewayup
2024-02-28 22:50:04
- #1
Yes, LM21 is a special mortar with a better insulation value than masonry mortar. Tiroplan even contains polystyrene beads. Slots in exterior walls up to certain dimensions are permissible and not relevant in thermal bridge calculations.Thank you both for your answers. xMisterDx mentioned the issue of thermal bridging when using mortar. Is this not the case with the variants you suggested (lightweight masonry mortar LM21 or slot plaster)? Google at least shows that LM21 lightweight masonry mortar is very highly insulating.