Re: Notable Changes to the Florida Building Code - Residential

May 21, 2015

M E M O R A N D U M

Bulletin

To: All Permit Applicants

Effective June 30, 2015, the Fifth Edition of the Florida Building Code – Residential (FBC-R) becomes effective. There are several modifications/additions to the code that may significantly affect residential construction. The purpose of the Bulletin is to make you aware of those code sections so you may research and prepare as necessary. This Bulletin is only addressing residential, and the list is in no way is to be considered a complete list of all the changes to the FBC-R.

R302.5.1 Requires doors connecting a garage to the house have some type of closure.

R302.1 Structures set back 5’ or less from the property line may be required to have fire rated overhangs. And no projections closer that two feet from the property line. Please review complete code section.

R303 Revises glazing requirements around wet surfaces.

R402.4.1.2 Florida Building Code – Energy Conservation Requires blower door testing to confirm air leakage not greater than 5 air changes per hour. Testing must be done by an approved third party, and report provided to the building official. In a subsequent Bulletin information will be provided on what third parties are approved, the form to be used, and when/where to be provided to the City.

R303.4 Requires a whole house ventilation system meeting M1507.3 when the air infiltration rate is less than 5 air changes per hour. (Which is what R402.4.1.2 above requires, thus all houses must have a whole house ventilation system).

R312 Changes requirements for guards and window fall protection.

R806 Changes attic ventilation requirements

R905 Changes installation and type of roofing underlayment (similar to present re- roofing requirements) R703.6.5 While previous codes have referenced that exterior plaster shall comply with ASTM C 926 and ASTM C1063, this section specifically states minimum curing time between coats.

M1506 Has added minimum clearance distances between air exhaust (bathroom, kitchen, etc.) and building openings.