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Summary of April 15,2000 Energy Code Requirements for Detached 1&2 Family Residential Buildings <br /> Code re uiremenl �O tion A-Cha Ier 7670 Cete o I aa amended b I.ewa of MN 2000 Ch.407 O tlon B-Minnesoh Rulea C6a ter 7672 <br /> 1. Material�&e ul ment <br /> Plans and Plans and specificetions must show design criteria,exterior envelope component Seme except with additionel required items: location of interior air barrier, <br /> specifications materials,U-values oC the rnvelope systems,R-values of insulating meteriels,size and vepor retarder,and wind wash bamer;identification of air sealing required; <br /> rype of apparatus and cquipment,end equipment and systems conhols. U•values of windows,doors and skylights and other in(ortnation needed to <br /> determine com liance such as re uirod ventilation s stem&meke-u air. <br /> 2. Foundation\Vall <br /> Insulation Cookbook required R-]0. Trade-ofipermitted with MNcheck, Cookbook has options for R-5,R-10,or R-19..Trade-ofl'pem�itted with <br /> MNcheck but not less than R-5. <br /> Protection of Exterior insulallon Crom top o£foundation wall to 6"below grade must be protected Sarne. <br /> exterior insulation a ainst W and h sicel abuse. <br /> Protection of Moisture barrier required between insulation and foundation wall(rom floor ro grade. Same. <br /> interior insulation <br /> 3. Rim/band oisU <br /> R-value Cookbook o tion re uired R-l9. Trade-ofT ermitted with MNcheck. Cookbook o tion re uircd R-10. Trade-off ertnitted with MNcheck. <br /> Va or retarder Re uired on rim'oists susce tible to condensation from moisturo difTusian. Warm side va or retarder re uired. <br /> Interior eir batrier Rim'oist re uired to be sealed to revent air leeka e. Same. <br /> Exterior wind wash Not addressed. Exterior wind wash batrier rcquired. <br /> barrier <br /> 4. Framin <br /> General Framing options include 2 x 4 or 2 x 6 walls,end other framing options such es log Seme. <br /> walls anelized walls,insulated mason walls and others. <br /> Attic ceiling Not eddressed. Notc: wind wash protection requirod at attic cdge. Minimum 6"heel truss from outside edge of top plare to roof shead�ing. <br /> Gamin <br /> Wall framing: Exterior wall comers and inrersections of inrerior partition walls with exterior walls Exterior well comers and intersections of interior partition walls with <br /> Exterior and intertor aro not eddressed. Exterior joints in the building that may be sources of air leakege cxterior walls are framed so that insulation can be installed aRer the <br /> must be sealed. exterior sheathing is installed. Whenever interior framing meets an <br /> insuleted ceiling or exterior wall,a continuous interior air barcier must be <br /> installed. <br /> 5. Thermal erformence minimuma <br /> Vaulted ceiling Cookbook option required R-38 between freming plus R-5 sheething. Cookbook option required R-38 between Gaming,no insulated sheathing <br /> re uired. <br /> Attic eccess panels Not eddressed. R-38 Cor ceiling panels and R-19 for wall panels,end must be weather- <br /> shi ed. <br /> Floors over Recommend R-30. Maximum U-0333 or minimum R-30 specified(hade-off may not be less <br /> miheated s aces strin ent than these values. <br /> Window thennal Ratin must be National Fenestration Ratin Council NFRC or ASHRAE Hendboak Ratin must be NFRC or default table in the code. Windows must be <br /> Page 17 oC34-Source of summary: Minnesota Department of Commerce Energy Information Center 651-296•5175 or 800-657-3710,gtiyy.cci�merce_gtpte_mn,�i,;; 4/00 <br />