buildingscience.com buildingscience.com buildingscience.com ENCLOSURE DESIGN WALLS and Windows Detailing Toward Zero-Energy Buildings Part 2 Heat Flow

Transcription

1 Dtalg Toward Zro-Ergy Buldgs Part 2 Btsy Pttt, FAIA Corporato Buld Bosto Novmbr 19, 2008 Bosto, MA Dsg Towards Zro Ergy ENCLOSURE DESIGN WALLS ad Wdows Thrmally Efft Assmbls Strutur oly whr dd Isulatg shathg Hat Flow Blow sulatos that fll th tr vod Advad Framg Dtals 1 of 13

2 Ar Flow 2 of 13

3 For Complx Gomtrs Flash ad Batt Or Flash ad Blow Vapor Flow Classs of Vapor Rtardrs Class I.1 prm or lss (sht polythyl, oprforatd alumum fol) Class II.1 prm to 1 prm (kraft fad fbrglass batts) Class III 1 prm to 10 prm (latx or aml pat) Allowabl Itror Vapor Rssta Rqurmts by Class Shathg Clmat Zo Mar OSB Class I, II Class I, II Class I, II Class I, II Extror Covrg Utlatd 5 Plywood Class I, II Class I, II Class I, II Class I, II Gypsum 4 Class I, II Class I, II Class I, II Class I, II Isulatg Class I, II, III Class I, II, III Class I, II, III Class I, II, III Shathg 2 (R-2.5 or gratr) 3 (R-5 or gratr) 3 (R-7.5 or gratr) 3 (R-10 or gratr) 3 Fbrboard Class I, II Class I, II Class I, II Class I, II Othr Class I, II Class I, II Class I, II Class I, II Nots: (2) Wh sulatg shathg s stalld ovr othr shathg, rqurmts for sulatg shathg shall govr (3) Isulatg shathg R-valus show parthss ar for 2x4 wall ostruto. 2x6 walls rqur sulatg shathg R-valus to b rasd 50%. (4) Wh sulatg shathg has a vapor prma of gratr tha Class III, rqurmts for gypsum shathg shall govr Wh sulatg shathg havg a vapor prma of gratr tha Class III s stalld ovr othr shathg, rqurmts for sulatg shathg shall govr (5) Stuo Brk/Sto/Masory Vr Wood/Wood Basd/Fbr Cmt Pal 2007 Supplmt to 2006 IRC ad IBC ad IECC 2009 IRC ad IBC rvsd for osstay 3 of 13

4 Shathg Allowabl Itror Vapor Rssta Rqurmts by Class Clmat Zo Claddg Attahmt Extror Covrg Vtlatd 5 Mar OSB Class I, II, III Class I, II, III Class I, II Class I, II Plywood Class I, II, III Class I, II, III Class I, II Class I, II Gypsum 4 Class I, II Class I, II, III Class I, II, III Class I, II Isulatg Class I, II, III Class I, II, III Class I, II, III Class I, II, III Shathg 2 (R-2.5 or gratr) 3 (R-5 or gratr) 3 (R-7.5 or gratr) 3 (R-10 or gratr) 3 Fbrboard Class I, II, III Class I, II, III Class I, II, III Class I, II Othr Class I, II Class I, II Class I, II Class I, II Nots: (2) Wh sulatg shathg s stalld ovr othr shathg, rqurmts for sulatg shathg shall govr (3) Isulatg shathg R-valus show parthss ar for 2x4 wall ostruto. 2x6 walls rqur sulatg shathg R-valus to b rasd 50%. (4) Wh sulatg shathg has a vapor prma of gratr tha Class III, rqurmts for gypsum shathg shall govr Wh sulatg shathg havg a vapor prma of gratr tha Class III s stalld ovr othr shathg, rqurmts for sulatg shathg shall govr (5) Stuo (3/8 h lar arspa wth 3/8 h otuous slot vt opgs at th top ad bottom of ah wall) Brk (2 h lar arspa wth 3/8 h x 2.5 h opgs (or quvalt t fr ara pr opg) vry 3 rd brk at th bottom ad top ours of ah wall) Sto/Masory Vr (2 h lar arspa wth 1 squar h of vt opg vry 24 hs of wall lgth at th bottom ad top of ah wall) Wood/Wood Basd/Fbr Cmt Sdg (1/4 h lar arspa or altratvly 1/4 h gap btw horzotal sdg laps Pal Sdg (3/8 h lar arspa wth 3/8 h otuous slot vt opgs at th top ad bottom of ah wall) Wdow Flashg A old opt! 2006 Wdows ad Curtawalls No of 13

5 5 of 13

6 Advad Framg Dtals Advad Framg Dtals Buldg Sto 6 of 13

7 Nw Wdows Dsg Towards Zro Ergy ENCLOSURE DESIGN ROOFS Photos ourtsy of Da Morrso, F Hombuldg Magaz Dut ad Ar Hadlr Loato 7 of 13

8 Uvtd Roof Dsg: Rgd sulato o Top of Dk / Ar Prmabl Isulato udr Dk Th oldr th lmat, th mor R-valu s dd Zo 2B, 3B Tl Roof : o rqurd Zo 1-3 : R-5 Zo 4 : R-10 to 15 Zo 5 : R-20 Zo 6 : R-25 Zo 7 : R-30 Zo 8 : R-35 Cotrollg Codsg Surfa Tmpratur : Zo 5-8 Nots: 1. Ar mprmabl sulato must b stalld drt otat wth th udrsd of th roof dk 2. Massahustts s Zo 5 Ths s th way w dd our off/bar rovato Uvtd Roof Dsg: Rqurmts for Vapor Dffuso Low Dsty Foam - Zos (5) 6, 7 Low Dsty (op ll) Foam zo 1-4 (o mmum prm ratg rqurd) Low Dsty Foam (op ll) zo 5-7 rqur 1 prm or lss ( foam shathg or som othr stratgy to rdu prmablty) drt otat wth th udrsd of th foam Hgh Dsty Foam (losd ll) mts m. prm rqurmts all zos Ths works Massahustts ad s th way our Somrvll off s dsgd 8 of 13

9 m o. s g buld m o. s g buld Hgh Dsty Foam All Zos Hybrd Dsg - Zo 5 Hgh Dsty Foam m R-20 m o. s g d bul 9 of 13

10 Dsg Towards Zro Ergy ENCLOSURE DESIGN FOUNDATIONS Exlud th Watr 10 of 13

11 11 of 13

12 12 of 13

13 m o. s g buld m o. s g buld m o. s g d bul 13 of 13