1318 75TH ST SE 2024-03-01 - Laserfiche WebLink

I Advanced Blower Door Test Company 425.870.1837 Technician Name: Date: Permit N: Age of House: House address&lot#: 131`K ls^ %t. SC City: E�ecr State: WA jZip Code: Source (circle one):(VM1R5> ESTIMATED MEASURED Blower Door Fan Location -em rjAcsC Ring (Circle one)) OPEN A B Other: Weather Conditions: Clear Rain ve a Other: Conditioned Floor Area: oqj�, TEST RESULTS Volume: 8.S Volume: ACH: ACH: a.a CFM: CFM: g31.3 I certify that these blower door results are accurate and determined using standard industry protocol: Company Name: lAdvanced Blower Door Test Company Technician Signature: Date: 1D ) Dl ) 33 R402.4.1 Testing -The building or dwelling unit shall be tested and verified as having an air leakage rate of not exceeding 5 ACH50. Testing shall be conducted with a blower door at a pressure of 0.2 inches w.g. (50 Pascals). For this test only, the volume of the home shall be the conditioned floor area on ft2 (2)multiplied by 8.5 feet (2.6m) Where required by the code official, testing shall be conducted by an approved third party. A written report of the results shall be signed by the party onducting the test and provided to the code official. Testing shall be performed at any time after creation of all penetratioi f the building thermal envelope. Once visual inspection has confirmed sealing (see Table R402.4.1.1), operable windows ai doors manufactured by small business shall be permitted to be sealed off at the frame prior to the test. During Testing: Exterior Windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weather stripping or other infiltration control measures; _L.LDampers including exhaust, intake, makeup air, back draft and flue shall be closed, but not sealed beyond intended infiltration control measures; 3.Llnterior doors, if installed at the time of the test, shall be open. Access hatches to conditioned crawl spaces and conditioned attics shall be open; Exterior openings for continuous ventilation systems and heat recovery ventilators shall be closed, sealed; 5AHeating and cooling systems, if installed at the time of the test, shall be turned off; and 6. Supply and return registers, if installed at the time of the test, Shall be fully open. Results shall be reported as Air Changes per Hour at 50 Pascals (ACH50) and shall be calculated as follows: 50 ACH = (CFM50 x 60)/Volume Where: CFM50 = Blower door fan at 50 Pascal pressure difference Volume =Conditioned floor area of housing unit x ceiling height.