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1311 Insulalion <br />1311.1 Installatlon Requirements: A9lnsulation malerials <br />shatl be installed accordng to lha manufaclurers insiructions <br />to achieve properdensities, maintatn clearances, and maintain <br />unifortn R-values. To tM maximum eztenl posside, Ins�ation <br />shall eMend over Ihe fu: mmponent area lo Ihe irdended R- <br />v. ue. <br />1311.2 RooilCeiling Insulation:Open-down or poured loose- <br />fi7 insulation may be used in aNic spacPs w� sre the slopa d <br />tha ceiling is not more Ihan 3/12 and lhere is at leasl Ihirty <br />Inches of clear distance from the top d the bottar� chord of the <br />truss or ceilingJoist lo �he undersido af the sheath!rg atihe <br />mo(ridge. When eave vmts are installed, baflling of the vent <br />openings shatl be prwided so as to deflect lhe Incaning air <br />above the surface o( ihe insulation <br />Where IighUig fixlures are recessed Intoa suspended or <br />exposed grid caling, theroo(/ceiling assembly sha! be <br />(nsulated in a locationolher than directly on lhe suspended <br />ceifing. <br />Exception: Type IC raled raessed lighting fixtures. <br />Where installed in v.00d Vaming, taced batt insulation <br />shall be face stapled. <br />1311.3 Wall Insulation: Exterior wall ca�ilies Isdated during <br />framing shall be tuly hsulated to lhe levels of lhe surrounding <br />wal5. When installed in v.00d traming, fa�ed batt insulalion <br />shall be face slaqed. <br />Abwe grade acterior insulation shali be protecled. <br />1311.4 Floor Insulatlon: Fioa insulation shall be inslalled in <br />a permanent manner in substantial contact wilh the sudace <br />being ins�ialed. Insulation supports shall bo inslalled so <br />spacing is not more lhan lwenty�our inches on center. <br />Installed insulation shall not dock the airflow �hrough <br />fandation venls. <br />1311.5SIalrOn�redeFlow: Slab-0rrgradeins�ation <br />installed insde the (oundation wa� shall extend dowrnvard from <br />the top of the siab a minimum distance of hventy-four inches a <br />to the lop of the footing, wfiicfwver is less. Insulalion installed <br />outside the foundation shall exlend downward a min���wm of <br />hventy-four inches orto the froslline, whichever is greater. <br />Above gade insulation shall be protecled. <br />Exception: For mondithic slabs, lhe insulation shall <br />exlend davnvrard from the top of iho slab to lhe <br />bdtom ofthe footing. <br />1371.6 Radiant Floors (on or below grado): Slab•on�grade <br />ireulation shall extend downvrard from lhe lop of the slab a <br />minimum distance oF thirty-sx inches or downward lo the top o( <br />lhe footing and haizorrtal for an aggregate of not less Ihan <br />thirty-six inches. <br />If required by the twilding official �tifieresdl conditims <br />warranl such insulation, the en6re area uf a radiantfloor shall <br />be therma0y isolated from lhe sdl. Where a soB gas contrd <br />system is proHded belav the radiant (bor, which results in <br />increased cornedive Ilow belav the radiantfloor, �he radant <br />floor shall be thermatly isolaled from the s ub•floa gravd layer. <br />1312 Glazing and Doors <br />1312.1 Standard Proceduro for Oaterminatfon of Gluing <br />and Door U•Factors: LLfaclors for glazing and doors shall be <br />d�ertnined, cerUfied and labeled in accordance wilh Standard <br />RS-31 by a certified independent agency licensed by tho <br />NaUonal Feneslration Rating Council (NFRC). Campliance <br />sha0 be based on lhe Residenlial or�he Nonresidential Model <br />Size <br />Produa sampes usea �or waau ueieninnauuio ,imn ue <br />production fine unils or representative d unils as purchased by <br />ihe consuma or coidractor. Urlabeled glazing and doars shall <br />be assigned lhe default U-fada v� Saction 2006. <br />13122 Solar Heat Gain Ccefficlent and Shading <br />CocfflcieM: Sdar Heat Gain Coefficient (SHGC), shall be <br />delertnined, certified and labelod In accordance with the <br />Nalional Fenestration Rating Council (NFRC) Sandard by a <br />cerlified, independenl agency, 6censed bythe NFRC. <br />Excoption: Shading cceficients (SC) shall be an <br />acceQlable aRernale for compliance with solar heat <br />�ain coefficienl requremenls. Shading coeffidents <br />for glazing shall be taken (ran Chapter 27 of <br />Starxiard R5�27 orfrom the manu(xtuers tesl data <br />1313 Molslure CoMrd <br />1313.1 Vapor RNardors: Vapor retarders shall be instatled on <br />the warm side (in winler) of insulation as required by lhis <br />section. <br />Exceplion: Vapor retarder installed wilh not more <br />than 1/3 of lho nominal R-value betvre� it arxllhe <br />condi6oned spaca <br />1313.2 RooflCeiling Assemhlies: RooUceilirg assemblies <br />where the venlilation space above the Insulatbn is less than <br />an average of Iwelve inches shall be prwided with a vapor <br />retarder. Roof/ceaing assemdies without a vented tirspace, <br />where neilher the roof deck northe roof sWcture are made d <br />wood, shall provide a continuous vapa retarder wRh taped <br />seams. <br />Excaption: Vapa reta�ders need not be prwided <br />wfiere all of lhe insula6on is installed belv.�en the <br />roo(membrane and Ihe structural rod deck <br />1373.3 Walls: Walls separating conditionedspace Bom <br />unconditbned space shall be proHded wilh a vapa retarder. <br />7313.4 Floors: Floars separaling conditioned space from <br />unconditioned space shall be provided wilh a vapor retarder. <br />1393.5 Crewl Spaces: Aground cover of six mil (0.0061nch <br />thick) black polyelhylene or approved equal shall be laid over <br />the ground within aawl spaces. The ground cover shall be <br />ovalapped M1velve inches minimum atthejoiNs and shall <br />eutend b the foundation wall. <br />ExcopNon: The ground cwermay be anitted in <br />crawl spaces i( Ihe crawi spacr, has a concrete slab <br />Ooorwith a mirimum thfckness of lhrce and one•half <br />mches. <br />1314 Air Leakage <br />1314.1 Bulldirg Envelope: The requiremmts W this section <br />shail appty to buildmg dements separa6rg conditioned 6om <br />uncondilioned spaces. ExtetiorJolnts around windv.vs and <br />door 6ames, openfngs between walls and foundation, betv.een <br />walls and root and waB panels; openirgs at penetrations d <br />u01iry services through walls, Aoors, and roo(s; and all dher <br />openings in the building envdope shall ba sealed �ulked, <br />g�keted, or wealherslripped lo limit ac leakage. <br />1314.2 Glazing and Doors: Doors and operade giazing <br />separeting wndtioned from uncondtioned space sha�l be <br />weatherslripped. Flxed windows shall be ti�ld fitting wi�h glass <br />retained by stops wilh sealant a cauliang all around <br />Exception: Operrngs ihatare requPed to be fire <br />resistanl <br />1314.3 Building ASsemblies Used as Ducts or Pienums: <br />Buikiing assem6lies used as duds or pienums shall be sealed, <br />caulked, and gasketed io limd a'v leakage. <br />�e <br />