Why is there a vapor barrier structural insulated panel?
The vapor barrier and insulation panel and structure. Most of the models to create a code of 1 or less perm with a vapor barrier are required evaluation. the Thermotech 21 ™ structural insulated panel system is less than 1 perm rating. Additionally, SIP Thermotech 21 ™ system with the wall, to remove the invalid and therefore does not condense moisture. The moisture problem is not panelized insulation system and structure. expanded polystyrene in the fund (EPS) and moisture absorption of the material released by the season, but in this cycle, there is no harmful effect.