8316 RIM DR 2018-01-02 MF Import

� Building Air Leakage Testing C-� log'�5 Washington State Energy Code (WSEC) section C;02.4.5 requires air leakage testing for all new houses. The requirement is met if the house has a Specific Leakage Area (SLA) of .00030 or less. SLA is an estimate of a home's leakage area, in �� square inches, under"typical" conditions, divided �` by the conditioned floor area of the home. The test must be performed using a Blower poor device which consists of a large fan, a frame and panel. A manometer (pressure gauge) is used to read house and fan pressures. WSEC states that the test may be performed at p any time after rough in. All penetrations in the building envelope must be sealed including those for �tilities, plumbing, electrical, ventilation and combustion appliances. The code also states that when required by the building official, the test shall be conducted in the presence of department staff. An air leakage test is not required for additions less than 750 square feet. To conduct the test: 1. Close all windows, doors and fireplace and stove doors. 2. Close all dampers including exhaust, intake, make-up air, backdraft and flue dampers. Since you will be depressurizing the house, dampers in bath fans, etc. will be sucked closed during the test and will therefore not negatively affect the results. 3. Make sure plumbing traps are filled with water. 4. Leave doors between heated areas open. 5. Open access hatches to conditioned attics and/or conditioned crawl spaces. 6. Seal exterior openings for continuously operating ventilation systems and heat recovery ventilators. 7. Turn off heating and cooling systems but do not seal supply or return registers. s. Adjust all combustion appliances so that they do not turn on during the test. 9. Install the blower door in an exterior door opening and connect hoses from the manometer to the blower door fan and the exterior pressure tap. See manufacturer's instructions for correct set-up. 10.Depressurize the house to -50 Pascals. � �