b'FIGURE 5: COMPARISON OF HOURLY AVERAGE MOISTURE CONTENT OF PLYWOOD SHEATHING BETWEEN WALLSF1, WALL WITH NO AIR GAP; F2, VENTED WALL; AND F3, VENTILATED WALL.and hot days. During the sunny cold days (Figure 6A, pg. 16), the temperature differences between the ventilated and the wall with no air gap is between 7oC and 12oC, and likewise during the summer hot days (Figure 6B, pg. 16) between 5oC and 7oC. The relatively lower plywood temperatures in the ventilated wall during both cold and warm sunny days are attributed to high cavity ventilation. In the absence of solar-induced cavity ventilation at night, the still air in the vented and ventilated walls increases the walls thermal resistance and keeps the plywood relatively warmer. On one hand, cavity venti-lation has the potential to lower building cooling load; on the otherPROUDLY CELEBRATING OURhand, the air gap and the associated airflow may reduce the possible heat gain from solar radiation during the heating season. Looking40 THANNIVERSARYfrom both moisture management and energy perspectives for the systems and test conditions considered in this study, the nearly-closed top flashing design (vented wall system) could be consideredToro Aluminum is a leading window, wall and an optimal choice. Note that as presented above, although it is small,door supplier for high-rise condominiums, there is still airflow in such a system. office buildings and hotels across Canada, REFERENCES the United States and Mexico.TenWolde, A., Carll, C., & Malinauskas, V. (1995). Airflows and moisture conditions in walls of manufactured homes. Airflow Performance ofUNITIZED CURTAIN WALLBuilding Envelopes, Components and Systems, ASTM STP 1255, Mark P. Modera and Andrew K. Persily, eds., ASTM, Philadelphia, pp. 137-155. UNITIZED WINDOW WALLLstiburek, J. (1999). Drainage Planes and Air Spaces, Research Report 0999. Building Science Corporation. www.buildingscience.com/ RAILINGSdocuments/reports/rr-9909-drainage-planes-and-air-spaces/viewTariku, F., & Emishaw, I. (2019). Empirical model for cavity ventilation and hygrothermal performance assessment of wood frame wall systems: Experimental(866) 320-7307 | www.toroaluminum.comstudy, 157(April), 112126. doi.org/10.1016/j.buildenv.2019.04.020FALL/WINTER 2020 17'