1831 100TH ST SW A Plans 2025-05-02

AIR BARRIER REQUIREMENT PER 2018 WASHINGTON STATE ENERGY CODE R402.4 A CONTINUOUS AIR BARRIER SHALL BE INSTALLED IN THE BUILDING ENVELOPE.EXTERIOR THERMAL ENVELOPE :L r CONTAINS A CONTINUOUS AIR BARRIER.BREAKS OR JOINTS IN THE AIR BARRIER SHALL BE SEALED.AIR PERMEABLE INSULATION SHALL NOT BE USED AS AS A SEALING MATERIAL. f PROVIDE BUILDING AIR LEAKAGE TESTING WITH APPROVED BLOWER DOOR PER C CEILING G.W.B.TAPED TO WALL INFORMATION BELOW.SUBMIT TESTING RESULTS TO JURISDICTION FOR APPROVAL. m G.W.B. �SEAL G.W.B Q OF DOOR&WINDOW PERIMETER BLOWER DOOR TEST OPENINGS II - = o. 2018 Washington State Energy Code(WSEC)section R402.4.1.2 requires air leakage testing for o SEAL G.W.B.TO TOP I I SEAL G.W.B.PERIMETER all new houses and additions.The requirement is met if the structure has a leakage rate of 5 air d +d PLATE AT ALL EXTERIOR OF DOOR&WINDOW changes per hour when depressurized with a blower door to 50 Pascals or less(5ACH50).A WALLS I I OPENINGS Pascal is a measurement of pressure.249 Pascals are equal to 1"of water column.The test must G.W.B.CAULKED TO TOP PLATE be performed using a Blower Door device which consists of a large fan,a frame and panel.A av,m manometer(pressure gauge)is used to read house and fan pressures. SHADED WSEC COMPONENTS states that the test may be performed at any time after rough in.All penetrations in the / I I I I building envelope must be sealed including those for utilities,plumbing, 'ventilation and INDICATE ELEMENTS I com IS, sh bustion appliances.The code also states that when requiretl by the building'official,the test w COMPRSall be conducted by an approved third party. NG THE N CONTINUOUS AIR I BARRIER ENCLOSURE I I To conduct the test: _ I I 1.Close all windows,doors and fireplace and stove doors. 2.Close all dampers including exhaust,intake,make-up air,backdraft and G.W.B.CAULKED TO BOTTOM PLATE I I I I I I 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 I I negatively affect the results. re 1 U r/ BOTTOM PLATE CAULKED OR GASKETED I I I I 3.Make sure plumbing traps am filled with water. TO SUBFLOOR/CONCRETE SLAB AT / I ( \ 4.Leave doors between heated areas open. SLAB ON GRADE CONDITIONS I / I I I 5.Open access hatches to conditioned attics and/or conditioned crawl spaces.Leave hatches closed if these are unconditioned areas. 6evkion saeauie 6.Seal exterior openings for continuously operating ventilation systems and RIM JOIST CAULKED,GLUED OR / I I heat recovery ventilators. GASKETED TO SUBFLOOR 7.Turn off heating and cooling systems but do not seal supply or return / / I registers. 8.Adjust all combustion appliances so that they do not turn on during the test. RIM JOIST CAULKED,GLUED OR I 9.Install the blower door in an exterior door opening and connect hoses from RIM JOIST A TOP PLATE the manometer to the blower door fan and the exterior pressure tap.See / I manufacturer's instructions for correct set-up. EA/ I SL G.W.B.TO FIRST 10.Depressurize the house to-50 Pascals. EA/ SL G.W.B.TO TOP STUD AT INTERIOR 11.Record the flow rate(with simple manometers,the fan pressure(Pa)is G.W.B.CAULKED TO TOP PLATE / PLATE WHEN ADJACENT I PARTIITIONS converted to.CF.2 using a flow table.Many digital manometers sold with / TO UNCONDITIONED I blower doors can automatically perform this conversion,and display ATTIC CFM5odimctly.)Consult your blower door and manometer manuals. // I You now must convert the flow rate(CFMw)to ACH5o. w // I Use the following formula: Cc ACH/ ACH 5o=(CFM w X 60)/Volume < QM SEAL G.W.B.TO SILL Where. W PLATE AT ALL EXTERIOR ACH 5o=Air Changes per Hour at-50 Pascals G.W.B.CAULKED TO BOTTOM PLATE WALLS SEAL ALONG INSIDE OF CFMso X 60=Converts Cubic Feet per Minute to Cubic Feet per BOTTOM OF FIRST STUD Hour Ir AT INTERIOR WALL OR Volume=Conditioned floor area of the housing unit multiplied by BOTTOM PLATE CAULKED OR GASKETED OLD BACK FIRST STUD the ceiling height TO SUBFLOOR/CONCRETE SLAB AT JI�A DRUN G.W.B. SLAB ON GRADE CONDITIONS ;;;;!�� ONTINUOUS Example:A blower door test has be.en done on a 2,000 square foot house and the fan flow(CFM50)rate is 1100 CFM. ALL ELECTRICAL PENETRATIONS AT EXTERIOR ACH.=(CFM50 X 60)1 Volume SUBFLOOR CAULKED,GLUED OR ACH._(11 00 X 60)1(2000 X 8) WALLS TO USE AIR-SEALED BOXES.ALL WIRE GASKETED TO RIM JOIST ACH.=66,000/16,000 OPENINGS&PENETRATIONS SEALED WITH ACH. CAULK,PUTTY OR INTEGRAL SEAL. RIM JOIST CAULKED OR GASKETED Since the code requires the ACHw to be less than 4,this house complies with an SEAL G.W.B.TO BOX FLANGE WITH TO SILL PLATE CONTINUOUS BEAD OF CAULK OR ADHESIVE. ACHwf o 4.1.Record the ACHm on the energy certificate on or near the electrical panel. P.T.SILL PLATE INSTALLED OVER CONTINUOUS SILL GASKET W O J L � W � (3 Z gn N CC G.W.B AIR BARRIER-CONCEPTUAL EXTERIOR WALL SECTION G.W.B AIR BARRIER-CONCEPTUAL ISOMETRIC O W � o Z T Q w v a m N CONCEPTUAL INTERIOR AIR BARRIER SYSTEM-GYPSUM WALL BOARD(G.W.B.)METHOD N N.T.S. a o I � E J s BOTH SIDES O ADHESIVE RST I SEALANT OR ADHESIVE O N v ON CONTINUOUS BEAD OF \NTERIOR STUD SUBFLOOR ADHESIVE I / \\ " o U \\ I \ v JOB NO.: rn \\ I \ 22205 G.W.B.ADHESIVE \ I SEALANT OR ADHESIVE v PLOT DATE e/4/2023 10:45:39 AM AT BOTTOM AND CONTINUOUS SEALANT AT TOP OF STUD -_ FIXTURE PERIMETER TO \ IDATE: 06/08/2023 G.W.B. \\ 2 SCALE: 1"=1'-0" I.C.RATED RECESSED \ o G.W.B.ADHESIVE ,�°,DRAWN: MB o LIGHT FIXTURE AT BOTTOM AND \ v CHCKD: TM TOP OF PLATE \ -� GENERAL SHEETS SHEET NO.: SEALING AT RECESSED FIXTURES A SEALING AT INTERSECTING WALLS SEALING AT RIM JOIST A 19 3 N.T.S. N.T.S. N.T.S. U