1321.04 REQUIREMENTS FOR INSULATION.
   All new one, two and three family residential dwelling structures or any new addition to a dwelling structure shall comply with the requirements of the Model Energy Code as required by the Ohio Building Code. In Chapter 4 Residential Design by Component Performance Approach the minimum effective resistance of the thermal insulation of each component to be utilized in the energy compliance calculation for proposed alternatives for areas of 6400 Heating Degree Days are:
 
Roof/ceiling with less than 10% wall openings      R-38
Roof/ceiling with 10% or more wall openings      R-49
Exterior frame walls with less than 10% openings      R-19 or R-13+5*
Exterior frame walls with more than 10% glazing      R-25 or R-19+5*
   * represents insulated sheathing R- value
Window and doors                  U-Factor 0.35
Mass Wall Masonry walls               R-13
Floors over unheated areas               R-30
Concrete slab perimeter insulation (unheated floors)   R-10
Concrete slab perimeter insulation (heated floors)      R-15
Basement walls                  R-10/13 **
Crawl space walls                  R-10/13 **
   ** (Continuous insulation / Cavity insulation)
Heating or cooling ductwork runs through unheated
areas insulate both the supply and return ducts      R-8
Hot water piping                  R-2
Maximum U-Factor times each area for trade off calculation alternative.
Roof/ceiling                     0.03
Exterior frame walls                  0.06
Window and door fenestrations            0.35
Mass Wall masonry walls etc.            0.082
Floors over unheated areas               0.033
Basement walls                  0.059
Crawl space walls                  0.065
Skylights                     0.6
(Ord. 07-0-117. Passed 11-20-07.)