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2004 Wachin^�on State Nonresidential Ener Code Com liap^^Form <br /> . S • � ' - ' <br /> 2p04 Washingion Stata NonrasiEenliai Enargy CoEe Com0lianco Forms RevrseE May 2005 <br /> Envelope - General Requirements <br /> 1311 Insulation Product samples used tor U-factor determinations shall be <br /> 1311.1 Installation Requiremeats: All insulation materials Production line unils or representative W unds as purchased by <br /> shall be installed accordin to the manufacturer's instructions ���e consumer or contractor. Ur�abeled glazing and doors shall <br /> 9 be assigned the default U-factor in Section 2006. <br /> to achieve properdensities,maintain clearances, and maintain <br /> unifortn R-values. To the maximum extent possible, insulation 1312.2 Solar Fleat Gain Coetficientand Shading <br /> shall eMend over ihe full wmponent area to the iMendecl R- Coefficient: Solar Heat Gain Coe(fcient(SHGC), shall be <br /> value. determined. certified and labeled in accordance with the <br /> 1311.2 RooOCeilin Insulation:0 n-dovm or oured loose- National Fenestration Rating Council(NFRC) Standard by a <br /> 9 Pe P certified, independent agency, ticensed by ihe NFRC. <br /> fll insulation may be used in attic spaces where thP slope d <br /> the ceiling is not more than 3/12 and there is at least thirty Exception: Shading cce(ficients(SC)shall be an <br /> inches of clear distance trom the top of the bottom chord of ihe acceptable atternate for canpliance vnth solar heat <br /> truss or ceiling joist to lhe underside of ihe sheathing at the gain coefficient requirements. Shading coeffdents <br /> roof ridge.When eave vents are installed, baflling of the vent for glaziny shall be taken from Chapter 27 uf <br /> opr.nings shatl be previded so as to deflect the incoming air Standard R&27 or from the manufacturers test data. <br /> above the surface of the insulation. 1313 Moisture CoMrd <br /> Where lighting fixtures are recessed into a suspended or 1313.1 Vapor Retarders:Vapor retarders shall be installed on <br /> exposed grid ceilirg,the roo(Iceiling assembly shatl be the warm side(in winter) of insulation as required by this <br /> insulated in a Ixation other than directly on the suspended secGon. <br /> ceiling. Exception:Vapor retarder installed with not more <br /> Exceptian: Type IC raled recessed lighting fixtures. than 1/3 of the naninal R-value between it and lhe <br /> Where installed in wood haming,faced batt insulation corditioned space. <br /> shall be face staped. 1313.2 RooilCeiling Assemblies:Roof/ceiling assemblies <br /> 1371.3 Wall Insulation:Exterior wall cavities isolated during W�re the ventilation space above the ireulatbn is less than <br /> framing shall be fuly insulated to the levels of the surrounding an average of N+elve inches shall be prwided with a vapor <br /> walis.When installed in wood 6aming,faced batt insulation retarder. Rooflceiling assemdies without a vented airspace, <br /> shall be face staqed. where neither the rwf deck nor the roof strucNre are made d <br /> Above grade exterior insulation shall be protected. ea�msshall provide a continuous vapa retarderwdh taped <br /> 1311.4 Floor Insuladon: Floor insulation shall be inslalled in Exception: Vapa retarders need not be prwided <br /> a permanent manner in substantial contact vnlh the surtace �ere all of the insulation is installed belween the <br /> beirg insulaled. Inwlation supports shall be installed so roof inembrane and lhe stmctural rod deck <br /> spacing's nol more than hventy-four inches on center. �313.3 WaIIs:Walls separaling condi6oned space from <br /> Installed insulation shall not dock the airNow through <br /> foundation vents. unconditbned space shall be proHded vrith a vapa rHarder. <br /> 1311.5 SlalrOnt.rade Floor: Slab•on-grade ins�tlation 1313.4 Floors:Floors separalmg conditioned space from <br /> instalied insde the fourxlation wall shall extend dowrnvard 6om unconditioned space shall be prrnided with a vapor retarder. <br /> thz top of the slab a minimum distance of hventy-four inches a 1313.5 Crawl Spaces:A ground cover of six mii(0.006 inch <br /> to lhe top o lhe footing,whichever is less. Insulation installed thick)black polyethylene or approved equal shall be laid ov� <br /> outside the fa�ndation shall extend downward a minimum of the ground wilhin aawl spaces.The ground cover shall be <br /> lwenty-four inches cr to the 6ostline,whichever is greater. overlapped twelve inches minimum atthejoirAs and shall <br /> Above grade insulation shall be proteded. eaRend to thetoundation wall. <br /> Exception:For mondithic slabs,the insula6on shall Exception:The ground cwer may be omitted in <br /> extend davnward from the top of ihe slab to the crawl spaces if the crewl space has a concre4e slab <br /> bdtom ofthe fooGng. floorwith a minmumthickness of three and one-half <br /> 1311.6 Radiant Floors(on or below grade): Slab-on-grade inches. <br /> insulation shall extend davnward from the top of the slab a 1314 Air Leakage <br /> minimum distance of thuTy-six inches or downward to the top of 1314.1 Building EnvNope:The requiremenis of ihis secUon <br /> the foo6ng and horizontal fa an aggregate of not less than shall apply to buildv�g Hements separating conditioned hom <br /> thirty-six inches. unconditioned spaces. ExteriorjoiMs around windows and <br /> If required by the building official where sdl conditions door frames, openings between walls and foundation, betxeen <br /> warrant such insulation, the entire area of a radiant floor shall walls and roof and waY panels;openings at peretrations d <br /> be thermally isolated from the soil. Where a soil gas control utlliry services lhrough walls,floas,and roofs;and all other <br /> system is provided Eela.v the radiant floor,which results in opznings in the building envelope shall be sealed, caulked, <br /> increased convedive flow below the radiant floor,the radant gasketzd, cr weatherstripped to lim@ av leakage. <br /> 9oor shall be thermally isolated from the sub-floor gravel layer. 1314.2 Glazing and Doors•Doors and operade glazing <br /> 1312 Glazing and Doors separating conditioned from unconditioned space shall be <br /> 1312.1 Standard Prceedure for Determination of Glazing weathers!npped. Fixed windows shall be Gght fitting with glass <br /> and Door U-factors: U-factas fa glazing and doors shall be relained by stops with sealant or caullang all around. <br /> detertnined,certified and labeled in accordance with Standard Exception: Openings that are required to be fire <br /> RS-31 by a certified independent agency licensed by the resisWnL <br /> National Fenestration Rating Council(NFRC). Compliance 1314.3 Building Assemblies Used as Ducts or Plenums: <br /> shall be based on the Residential or tt�Nonresiderriial Model Building assemdies used as ducts or plenums shall be sealed, <br /> Size. caulked, and gaskeled lo limd air leakage. <br /> G�� <br />