b'THE OFFICIAL NFBA MAGAZINEMOISTURE PROBLEMS AND SOLUTIONS REMOVING EXCESS MOISTURE WITH VENTILATIONRESEARCH & TECHNOLOGYFigure 3R emoving any accumulated moisture is an importantAn occupied space ventilation system step in addressing potential moisture problems.needs to be operated to remove indoor Proper ventilation - removing inside air andmoisture so that moisture does not replacing it with outside air - will safely remove excesscondense on the inside of windows or moisture from inside the building system.But while airexterior door frames (see photo) during infiltration will ventilate a building, the exterior buildingwinter.Exterior building components envelope may be compromised by air escaping into thelike windows and door frames often have exterior envelope as discussed in Moisture Problems andlower R-values compared to exteriorByJoseph M. Zulovich SolutionsKeeping Water and Moisture Out as publishedinsulated wall sections.During winterPh.D., P.E.in the November 2023 Issue of Frame Builder Magazine.weather, a building component with a Ventilation discussed in this article focuses on ventilationlower R-value will usually have a lower needs for the occupied space of heated facilities duringinside surface temperature compared to inside surface cold weather.The heated occupied space provides fortemperature on components with higher R-values.This the activities occurring in the building.Ventilation ofdifference in surface temperatures caused by different the occupied space is not the same as attic ventilation.R-values is why condensation will form on windows Attic ventilation commonly exchanges air in the space/ and door frames before it forms on insulated wall areas.volume above an insulated ceiling and the roof.ThisWhen the surface temperature of the building component attic space is outside the envelope of the heated occupiedis lower than the dew point temperature of the air inside space and is not addressed in this article. the building, condensation will form on the inside continued on page: 1918 / FRAME BUILDER - VOL5 4'