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S Alterations Worksheet 2015 Washington State Energy Code Pa'jectlnfoimatlon Contactlnfonnution BakerAdaiiic l - .. . "NuttyCAD`Drafting;and-Design;LLC' " 1410 119tfi.Place S.E. (206)225-0068 ,Everett,-WA-98208 ,. The Washington State Energy Code requirements for alterations are located in Chapter 5 Alterations(remodels)do not need to obtain energy credits from Table R406.2 Additions must meet the requirements for new construction. This includes nonconditioned space being altered to become conditioned space. Will the wall cavities be exposed? r Yes >✓ No If yes: Exposed wall cavities must be insulated- 2 X 4 wall studs require R-15 insulation 2 X 6 wall studs require R-21 insulation Will the roof/ceiling framing cavities or attic be exposed? w Yes r No If yes: Exposed roof/ceiling assemblies must be insulated- Vaulted ceilings: Insulate to the full depth of the framing member while allowing for the minimum 1"ventilated space Flat ceilings: Install R-49 insulation or what the attic space can accommodate based on the roof pitch Will the floor framing cavities be exposed? r Yes l No If yes: Exposed floor cavities must be insulated to R-30 Are the windows and/or doors being replaced? R7 Yes E No (includes both window or door and frames) If yes: New windows and doors must have an area weighted average U-factor of s0.30 Will the heating or cooling system be replaced? r Yes f No If yes: New equipment must meet current requirements and ducts need to be tested Will the hot water system be altered? r Yes 14 No If yes: New water heating equipment must meet current code requirements Are more than 50%of the light fixtures being changed? Ri Yes r No If yes: 75% of all lamps must be high efficacy (LED or CFL) R503.1.1 Building envelope.Building envelope assemblies that are part of the alteration shall comply with Section R402.1.1 or R402.1.4, Sections R402.2.1 through R402.2.11,R402.3.1,R402.3.2,R402.4.3 and R402.4.4. Exception:The following alterations need not comply with the requirements for new construction provided the energy use of the building is not increased: 1. Stoner windows installed over existing fenestration. 2. Existing ceiling,wall or floor cavities exposed during construction provided that these cavities are filled with insulation.2x4 framed walls shall be insulated to a minimum of R-15 and 2x6 framed walls shall be insulated to a minimum ofR21. 3. Construction where the existing roof,wall or floor cavity is not exposed. 4. Roof recover. • 5. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulates either above or below the sheathing. 6. Surface-applied window film installed on existing single pane fenestration assemblies to reduce solar heat gain provided the code does not require the glazing fenestration to be replaced R503.1.1.1 Replacement fenestration.Where some or all of an existing fenestration unit is replaced with a new fenestration product, including sash and glazing,the replacement fenestration unit shall meet the applicable requirements forU-factor and SHGC in Table R402.1.1. R502.1.L2 Heating and cooling systems.New heating,cooling and duct systems that are part of the addition shall comply with Sections R403.1,R403.2,R403.3,R403.5 and R403.6. Exception:The following need not comply with the testing requirements of Section R403.3.3: 1. Additions of less than 750 square feet. 2. Duct systems that are documented to have been previously sealed as confirmed through field verification and diagnostic testing in accordance with procedures in WSU RS-33. 3. Ducts with less than 40 linear feet in unconditioned spaces. 4. Existing duct systems constructed,insulated or sealed with asbestos. • R503.1.3 Service hot water systems.New service hot water systems that are part of the alteration shall comply with Section R403.4. R503.1.4 Lighting.New lighting systems that are part of the alteration shall comply with Section R404.1. Exception:Alterations that replace less than 50 percent of the luminaires in a space,provided that such alterations do not increase the installed interior lighting power. R503.2 Change in space conditioning.Any nonconditioned or low-energy space that is altered to becomeconditioned space shall be required to be brought into full compliance with this code.