Group Title: Affordable housing issues
Title: Affordable housing issues ; vol. 17 no. 6
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 Material Information
Title: Affordable housing issues ; vol. 17 no. 6
Series Title: Affordable housing issues
Physical Description: Serial
Language: English
Creator: Shimberg Center for Affordable Housing
Publisher: Shimberg Center for Affordable Housing
Place of Publication: Gainesville, Fla.
Publication Date: October 2007
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Bibliographic ID: UF00087009
Volume ID: VID00046
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.


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M.E. Rinker, Sr., School of Building Construction College of Design, Construction & Planning PO Box 115703,
University of Florida, Gainesville, FL 32611-5703 TEL: (352) 273-1192 SUNCOM: 622-7697 FAX: (352) 392-4364

Volume XVII, Number 6

October 2007

The Florida Home Builders Association ( released a summary of
Florida Building Code changes approved by the Florida Legislature during the 2007
legislative session. Although building codes generally apply to the construction of new
homes, some of the changes passed by the legislature can have an impact on existing
homeowners. Specifically, there are new requirements that must be met ifa homeowner
chooses to replace their roof covering. The specific requirements for the following
retrofit measures are described in detail in The Guide that is available for printing on
the Internet at

The Florida Building Commission approved a
number of new regulations that resulted from
bills passed by the 2007 Florida Legislature.
Among the bills passed was the formal adoption
of the 2007 Florida Building Code. The effective
date of the code is October 1, 2007.

Section 553.844, Florida Statutes addresses
retrofitting existing site-built, single-family
homes to resist hurricanes is now required under
certain circumstances. This provision of the
Florida Statutes directly impacts home owners
that are considering the replacement of their roof
covering material.

When a roof on a site-built single-
family home is replaced...

a) Roof-decking attachment and fasteners must
be strengthened and corrected as required
by Section 201.1 of the 2007 Manual of
Hurricane Mitigation Retrofits for Existing
Site-Built Single Family Residential Struc-
tures ( aka: The Guide). Ring-shank nails
(See Figure 1) are the recommended fastener
when supplemental fastening is required by
Table 201.1 of The Guide.


Figure 1: Typical Ring-shank nail

b) and, a secondary water barrier shall be pro-
vided as required by section 201.2 of The
Guide. The barrier may consist of a 4-inch
wide strip of self adhering polymer modi-
fied bitumen tape covering all roof sheath-
ing joints. (See Figure 2) After the tape is
in place, the underlayment approved for
the roof covering is installed over the taped

Figure 2: Installing Bitumen Tape at
Sheathing Joints

c) or, an alternative secondary water barrier is to
cover the entire roof deck with an approved
self-adhering polymer modified bitumen cap
sheet. No additional underlayment is required
on top of the cap sheet.

When a roof on a site-built single-
family home is replaced and ...
* the structure is located in the wind-borne de-
bris region as defined in section 1609.2 of the
Florida Building Code-Building
* and, the building has an insured value of
$300,000 or more,
* or, if the building is uninsured,
* or, if no documentation of the insured value of
the building is presented but a just valuation
for the structure for purposes of ad valorem
taxation is $300,000 or more.

a) Roof-to-wall connections shall be improved
as required by section 201.3 of The Guide,
b) Mandated retrofits of the roof-to-wall con-
nection shall not be required beyond a 15
percent increase in the cost of re-roofing,
c) If complete retrofits of all the roof-to-wall
connections as prescribed in Section 201.3
of The Guide would exceed 15 percent of
the cost of the re-roofing project, the priori-
ties outlined in Section 201.3.5 shall be used
to limit the scope of work to the 15 percent

When any activity requiring a building
permit is applied for on or after July
1, 2008, for which the estimated cost is
$50,000 or more...

* and, the building is located in the wind borne
debris region as defined in s. 1609.2 of the
Florida Building Code-Building
* and, the building has an insured value of
$750,000 or more,
* or, if the building is uninsured
* or, for which documentation of insured value
is not presented, but a just valuation for the
structure for purposes of ad valorem taxation
of $750,000 or more:

a) Opening protections as required within the
Florida Building Code-Building or Florida
Building Code-Residential for new construc-
tion shall be provided.
b) When retrofit enhancement of gable-end
bracing is provided during construction
which otherwise requires a permit, the
techniques presented in Appendix A of The
Guide shall be allowed.

For more specific details on hurricane mitigation
retrofits, the reader are encouraged to print and
review the requirements presented in The Guide
pdf pursuant to Section 553.844 of Florida
Statutes, strengthening of existing site-built,
single-family homes is now required under
certain conditions.

If you have any questions or comments about the
Shimberg Center for Affordable Housing or the
Florida Housing Data Clearinghouse we'd like to
hear from you. Please contact us by phone at
1-800-259-5705 or (352) 273-1192, or by email
at fhdc-comments

Other Internet web sites that you can use are:

* http ://
for the Florida Housing Data Clearinghouse

* for general
information about the Shimberg Center and
it staff.

Affordable Housing ISSUES is prepared bi-monthly by the Shimberg Center for Affordable Housing for the purpose
of discussing contemporary issues facing affordable housing providers. Reproduction of this newsletter is both permitted and
encouraged. Comments or questions regarding the content are welcome and should be addressed to Robert C. Stroh, Director.

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