RESIDENTIAL ROOF PERMITTING - 101 A REFRESHER WORKSHOP September 11, 2014
Agenda Basics of Permit Application Use of Charlotte County GIS system Florida Product Approvals Top Application Mistakes Standard Inspections for re-roof Top Inspection Failures Questions 2
3
Description of work to be done: Roof Replacement? or Roof Recover? or Roof Repair? 4
#4 of top ten application mistakes: Type of roof modification undisclosed 5
Description of work to be done: Roof Replacement Asphalt Shingles Tile Metal Modified Etc 6
Description of work to be done: Roof Re-Cover: Not more than two layers of any type of roof covering. FBC-Existing 611.3 7
Description of work to be done: Roof Repair: Not more than 25% of the total roof area or section can be repaired, replaced or recovered in a year unless the entire roof or section conforms with the current code 8
#1 of top ten application mistakes: Wind-zone not indicated or wrong 9
Risk Category 2 Buildings that are not risk category 1, 3, or 4. 10
Risk Category 2 Charlotte County map 11
Wind-zone and Exposure: www.ccgis.com Enter Mapping Site 12
Wind-zone and Exposure: www.ccgis.com Accept disclaimer 13
-and Exposure: www.ccgis.com Search by: Address Owner Account # Legal 14
Wind-zone and Exposure: www.ccgis.com Search by: Address Owner Account # Legal 15
Wind-zone and Exposure: www.ccgis.com Search by: Address Owner Account # Legal 16
Wind-zone and Exposure: www.ccgis.com Search by: Address Owner Account # Legal 17
Wind-zone and Exposure: www.ccgis.com Risk Category: Cat. 1 Cat. 2 Cat. 3 18
Wind-zone and Exposure: www.ccgis.com Risk Category: Cat. 1 Cat. 2 Cat. 3 19
#2 of top ten application mistakes: Exposure not indicated or wrong 20
Wind-zone and Exposure: www.ccgis.com Exposure B or C or D? The basic wind exposure for Charlotte County is Exposure C, wherever exposure B or D are not applicable. 21
Wind-zone and Exposure: www.ccgis.com Surface Roughness B: Urban and suburban areas with numerous closely spaced obstruction of a size of a single family dwelling or larger. Exposure B: Buildings with a mean roof height of less or equal to 30 in surface roughness B for at least 1,500 or height more than 30 with surface roughness B of 2,600. 22
Wind-zone and Exposure: www.ccgis.com Exposure B 23
Wind-zone and Exposure: www.ccgis.com Surface Roughness C: Open terrain with scattered obstructions heights less than 30. Exposure C: Applies where exposure B or D do not apply. 24
Wind-zone and Exposure: www.ccgis.com Exposure C 25
Wind-zone and Exposure: www.ccgis.com Surface Roughness D: Flat, unobstructed areas and water surfaces. Exposure C: Surface Roughness D for 5,000 or 20 times the height of the building. Also applies in exposure B or C within 600 or 20 times the building height from exposure D. 26
Wind-zone and Exposure: www.ccgis.com Exposure D 27
#3 of top ten application mistakes: Building use not indicated (Residential/Storage) 28
Year built and valuation can be also found at www.ccgis.com at www.ccappraiser.com 29
Building valuation: Important for compliance with Section 553.844 Florida Statutes (Hurricane Mitigation Retrofits for Existing Site-Built SFR). 30
101.1 When a roof is replaced: Roof decking attachment and fasteners shall be strengthened an corrected. A secondary water barrier shall be provided. 31
101.2 When the house insured value or just value is at $300,000 or more. Roof to wall connections shall be improved (up to 15% of the cost of re-roofing). Where complete retrofits will exceed 15% of the cost priorities per section 201.3 apply. 32
101.3 For permits applied for on or after July 1, 2008, at estimated cost is $50,000 or more, located in the wind-borne debris region, and an insured or just value of $750,000 or more. Opening protection shall be provided. 33
#5 of top ten application mistakes: Mean roof height not indicated or wrong 34
#6 of top ten application mistakes: Existing deck type and thickness 35
#7 of top ten application mistakes: Roof slope 36
Check minimum required windload. 37
#8 of top ten application mistakes: Quantity of the area in squares (100 sf=1 square 38
#9 & #10 of top ten application mistakes: Product approvals not indicted or wrong 39
Product approvals can be found at www.floridabuilding.org 40
Product approvals can be found at www.floridabuilding.org 41
Product approvals can be found at www.floridabuilding.org 42
Product approvals can be found at www.floridabuilding.org 43
Product approvals can be found at http://www.miamidade.gov/building/pcsearch_app.asp 44
Standard inspections for re-roof Roof Re-nail Decking: Existing roof is torn off. Assure that deck is adequate for new installation. Re-nail as required per F.S. 533.844 45
Standard inspections for re-roof Roof to wall connections- Strapping (when required per FS 533.844) 46
Standard inspections for re-roof Roof Affidavit Notarized (per FS 553.844): Must be filled out by a licensed contractor, registered engineer or architect or licensed building inspector. Certifies inspection of roof deck nailing, secondary water barrier, and roof to wall connections. Must include pictures of each plane of the roof with the roof permit and address on it. 47
Standard inspections for re-roof Roof Dry-in: Once underlayment is complete. 48
Standard inspections for re-roof Roof Final 49
Top Inspection Mistakes #1 - On shingle roofs, contractors are typically not aware of the secondary water barrier requirement. 50
Top Inspection Mistakes #2 Fail to install 2 ply-in on shingle roofs with low slope (does not apply to selfadhered membrane). 51
Top Inspection Mistakes #3 Fail to do proper overlap and meet nailing of eave drip requirements. 52
Top Inspection Mistakes #4 Fail to follow manufacturer s specification per product approval as: Shingle layout pattern Nail placement Installation of flashing, etc. 53
Top Inspection Mistakes #5 Failure to meet uplift criteria on underlayment attachment 54
Top Inspection Mistakes #6 Fail to install self-adhered underlayment per manufacturer s specs. 55
Top Inspection Mistakes #7 Must install hip and ridge nailers on tile roof systems. The roofs must be permitted either with Miami-Dade NOA or Florida Product Approval. If NOA: must follow RAS guidelines If Florida Product Approval: use product specs as well as FRSATPI 4 th edition for tile roofs. 56
Permit information on-line Register to follow and schedule online at https://apps2.charlottecountyfl.gov/citizena ccess/bocc.aspx 57
Questions? For specific technical or permit questions please contact the Charlotte County Building Construction Services Department at: 18400 Murdock Circle Port Charlotte, FL. 33948 (941) 7431201 58