Florida Senate - 2024                                    SB 1130
       
       
        
       By Senator Martin
       
       
       
       
       
       33-00849-24                                           20241130__
    1                        A bill to be entitled                      
    2         An act relating to the Florida Building Code; creating
    3         s. 553.9065, F.S.; providing that certain unvented
    4         attics and enclosed rafter assemblies meet specified
    5         requirements of the code; directing the Florida
    6         Building Commission to adopt the provisions of the act
    7         into the Florida Building Code by a certain date;
    8         providing an effective date.
    9          
   10  Be It Enacted by the Legislature of the State of Florida:
   11  
   12         Section 1. Section 553.9065, Florida Statutes, is created
   13  to read:
   14         553.9065 Thermal efficiency standards for unvented attics
   15  and unvented enclosed rafter assemblies.—Unvented attics and
   16  unvented enclosed rafter assemblies that are insulated and air
   17  sealed with a minimum of R-20 air-impermeable insulation meet
   18  the requirements of sections R402.1.2 and R402.1.3 of the
   19  Florida Building Code-Energy Conservation, 8th Edition (2023) if
   20  all of the following apply:
   21         (1) The unvented attic and unvented enclosed rafter
   22  assembly comply with section R.806.5 of the International
   23  Residential Code.
   24         (2) The building has a blower door test result of less than
   25  3 ACH50.
   26         (3) The building has a positive input ventilation system or
   27  a balanced or hybrid whole-house mechanical ventilation system.
   28         (4) If the insulation is installed below the roof deck and
   29  the exposed portion of roof rafters is not already covered by
   30  the R-20 air-impermeable insulation, the exposed portion of the
   31  roof rafters is insulated by a minimum of R-3 air-impermeable
   32  insulation, unless directly covered by a finished ceiling. Roof
   33  rafters are not required to be insulated by a minimum of R-3
   34  air-impermeable insulation if continuous insulation is installed
   35  above the roof deck.
   36         (5) All indoor heating, cooling, and ventilation equipment
   37  and ductwork is inside the building thermal envelope.
   38         Section 2. By October 1, 2024, the Florida Building
   39  Commission shall adopt s. 553.9065, Florida Statutes, as created
   40  by this act, into the Florida Building Code pursuant to s.
   41  553.73(8), Florida Statutes.
   42         Section 3. This act shall take effect July 1, 2024.