Am i able to get away without having some of These layers specified my weather zone? One example is, can I use all Roxul, devoid of XPS? Do I Completely need to have the drywall?If you put in 2x4s (or 2x3s on edge, installed with extensive screws) perpendicular on the rafters, you might deal with the majority of the thermal bridging worry with no n

If you would like use only one variety of insulation in unvented rafter bays, you will be restricted to spray polyurethane foam. A different chance, obviously, is to construct your roof with structural insulated panels (SIPs).Code does not seem to be to apply since it's grandfathered in. It looks like I need to redo the hall ceiling.Your plan to in