Labels:bulletin board | sky | trade name | window OCR: Series Method: .................................... ................................... The brick is an open rain- screen concept -moisture gets in moisture drains out -so by definition you have got to have air moving thre 'ough that cavity The presence of that air effectively negat es much of its value as an insulating air space. T+ also decoup les the brick from the wall assembly making not truly an effective part the assembly There's probably some R-value there but it is probably not the R1 or R1.5 that you might estimate be There are other reasons that decoupl led as well and I'll talk about those ir few minutes when we talk about the Modified Zone Method. So for the moment accept the fact that the brick and air space are omit ted from this total number of 18.1 using the series method ...
