Roof Assemblies

Scope.

The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. Exception: Buildings and structures located within the High-Velocity Hurricane Zone shall comply with the provisions of Chapter 44.

Roofing covering materials.

Roofs shall be covered with materials as set forth in Sections R904 and R905. Class A, B or C roof assemblies shall be installed in jurisdictions designated by law as requiring their use or where the edge of the roof is less than 3 feet (914 mm) from a lot line.

Fire-retardant-treated shingles and shakes.

Fire-retardant-treated wood shakes and shingles shall be treated by impregnation with chemicals by the full-cell vacuum-pressure process, in accordance with AWPA C1.

Building-integrated photovoltaic product.

Reserved.

Rooftop-mounted photovoltaic panel systems.

Rooftop-mounted photovoltaic panel systems installed on or above the roof covering shall be tested, listed and identified with a fire classification in accordance with UL 1703 and UL 2703.

General.

Roof decks shall be covered with approved roof coverings secured to the building or structure in accordance with the provisions of this chapter.

Flashing.

Flashings shall be used to seal roofing systems, where the system is interrupted or terminated and shall be installed in a manner that prevents moisture from entering the wall and roof through joints in copings, through moisture permeable materials and at intersections with parapet walls and other p...

Locations.

Flashings shall be installed at wall and roof intersections, wherever there is a change in roof slope or direction and around roof openings. Where flashing is of metal, the metal shall be corrosion resistant with a thickness of not less than provided in Table R903.2.1 or in compliance with RAS 111.

Crickets and saddles.

A cricket or saddle shall be installed on the ridge side of any chimney or penetration more than 30 inches (762 mm) wide as measured perpendicular to the slope. Cricket or saddle coverings shall be sheet metal or of the same material as the roof covering.

Membrane flashings.

All membrane flashing shall be installed according to the roof assembly manufacturer’s published literature.

Coping.

Parapet walls shall be properly coped with noncombustible, weatherproof materials of a width not less than the thickness of the parapet wall.

Roof drainage.

Unless roofs are sloped to drain over roof edges, roof drains shall be installed at each low point of the roof. Where required for roof drainage, scuppers shall be placed level with the roof surface in a wall or parapet.

Overflow drains and scuppers.

When other means of drainage of overflow water is not provided, overflow scuppers shall be placed in walls or parapets not less than 2 inches (51 mm) nor more than 4 inches (102 mm) above the finished roof covering and shall be located as close as practical to required vertical leaders or down-spout...

One and two family dwellings, and private garages.

When gutters and leaders are placed on the outside of buildings, the gutters and leaders shall be constructed of metal or approved plastic for outdoor exposure with lapped, soldered or caulked joints and shall be securely fastened to the building with a corrosion resistant fastening device of simila...

Scope.

The requirements set forth in this section shall apply to the application of roof covering materials specified herein. Roof assemblies shall be applied in accordance with this chapter and the manufacturer’s installation instructions.

Compatibility of materials.

Roof assemblies shall be of materials that are compatible with each other and with the building or structure to which the materials are applied.

Material specifications and physical characteristics.

Roof covering materials shall conform to the applicable standards listed in this chapter.

Product identification.

Roof covering materials shall be delivered in packages bearing the manufacturer’s identifying marks and approved testing agency labels required.

Nails.

Nails shall be corrosion-resistant nails conforming to ASTM F1667 or an equal corrosion resistance by coating, electro galvanization, mechanical galvanization, hot dipped galvanization, stainless steel, nonferrous metal and alloys or other suitable corrosion-resistant material, or corrosion resistan...

Screws.

Wood screws shall conform to ANSI/ASME B 18.6.1. Screws shall be corrosion resistant by coating, galvanization, stainless steel, nonferrous metal or other suitable corrosion-resistant material.

Clips.

Clips shall be corrosion-resistant clips.

Roof covering application.

Roof coverings shall be applied in accordance with the applicable provisions of this section and the manufacturer’s installation instructions.

Metal roof panels.

The installation of metal roof panels shall comply with the provisions of this section. Metal roofing panels shall be factory or field manufactured in accordance with the manufacturers’ product approval specifications and limitations of use.

Deck requirements.

Metal roof panel roof coverings shall be applied to solid or spaced sheathing, except where the roof covering is specifically designed to be applied to spaced supports.

Slope.

Minimum slopes for metal roof panels shall comply with the following: 1. The minimum slope for lapped, nonsoldered-seam metal roofs without applied lap sealant shall be three units vertical in 12 units horizontal (25-percent slope).

Material standards.

Metal-sheet roof covering systems that incorporate supporting structural members shall be designed in accordance with the Florida Building Code, Building. Metal-sheet roof coverings installed over structural decking shall comply with Table R905.4.4.

Attachment.

Metal roof panels shall be secured to the supports in accordance with this chapter and the manufacturer’s installation instructions. In the absence of manufacturer’s installation instructions, the following fasteners shall be used: 1.

Underlayment.

Underlayment shall comply and be installed in accordance with Section R905.1.1.

Underlayment.

Underlayment for roof slopes 2:12 and greater shall conform to the applicable standards listed in this chapter.

Modified bitumen roofing.

The installation of modified bitumen roofing shall comply with the provisions of this section.

Underlayment for asphalt shingles, metal roof panels or shingles, mineral surfaced roll roofing, slate and slate-type shingles, wood shakes and wood shingles.

Underlayment for asphalt shingles, metal roof panels or shingles, mineral surfaced roll roofing, slate and slate-type shingles, wood shakes and wood shingles shall comply with one of the following methods: 1.

Slope.

Modified bitumen membrane roofs shall have a design slope of not less than one-fourth unit vertical in 12 units horizontal (2-percent slope) for drainage.

Underlayment for concrete and clay tile.

Underlayment for concrete and clay tile shall comply with Section 905.3.3.

Material standards.

Modified bitumen roof coverings shall comply with the standards in Table R905.11.2.

Application.

Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer’s instructions. The approved allowable uplift resistance for the modified bitumen roof shall be equal to or greater than the uplift resistance for the roof based on Table R301.2(2).

Thermoset single-ply roofing.

The installation of thermoset single-ply roofing shall comply with the provisions of this section.

Slope.

Thermoset single-ply membrane roofs shall have a design slope of not less than one-fourth unit vertical in 12 units horizontal (2-percent slope) for drainage.

Material standards.

Thermoset single-ply roof coverings shall comply with ASTM D4637 or ASTM D5019.

Application.

Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer’s instructions. The approved allowable uplift resistance for the thermoset single-ply membrane roof shall be equal to or greater than the uplift resistance for the roof based on Table R301.2(2).

Thermoplastic single-ply roofing.

The installation of thermoplastic single-ply roofing shall comply with the provisions of this section.

Slope.

Thermoplastic single-ply membrane roofs shall have a design slope of not less than one-fourth unit vertical in 12 units horizontal (2-percent slope).

Material standards.

Thermoplastic single-ply roof coverings shall comply with ASTM D4434, ASTM D6754 or ASTM D6878.

Application.

Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer’s instructions. The approved allowable uplift resistance for the thermoplastic single-ply roof shall be equal to or greater than the uplift resistance for the roof based on Table R301.2(2).

Sprayed polyurethane foam roofing.

The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section or incompliance with RAS 109 and 109A.

Slope.

Sprayed polyurethane foam roofs shall have a design slope of not less than one-fourth unit vertical in 12 units horizontal (2-percent slope) for drainage.

Material standards.

Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425.

Application.

Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer’s instructions. A liquid-applied protective coating that complies with Table R905.14.3 shall be applied not less than 2 hours nor more than 72 hours following the application of the foam.

Foam plastics.

Foam plastic materials and installation shall comply with Section R316.

Liquid-applied roofing.

The installation of liquid-applied roofing shall comply with the provisions of this section.

Slope.

Liquid-applied roofing shall have a design slope of not less than one-fourth unit vertical in 12 units horizontal (2-percent slope).

Material standards.

Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947.

Application.

Liquid-applied roofing shall be installed in accordance with this chapter and the manufacturer’s approved installation instructions.

Building-integrated photovoltaic roofing modules/shingles.

The installation of building-integrated photovoltaic roofing modules/shingles shall comply with the provisions of this section, Section R324 and NFPA 70.

Underlayment.

Underlayment shall comply and be installed in accordance with Section R905.1.1.

Underlayment application.

Reserved.

Underlayment and high winds.

Reserved.

Material standards.

Building-integrated photovoltaic roofing modules/shingles shall be listed and labeled in accordance with UL 1703.

Attachment.

Building-integrated photovoltaic roofing modules/shingles shall be attached in accordance with the manufacturer’s installation instructions.

Wind resistance.

Building-integrated photovoltaic roofing modules/shingles shall be tested in accordance with procedures and acceptance criteria in ASTM D3161 or TAS 107.

Photovoltaic systems.

Rooftop mounted photovoltaic systems shall be designed in accordance with this section.

Wind resistance.

Rooftop mounted photovoltaic systems shall be designed for wind loads in accordance with ASCE 7.

Fire classification.

Rooftop mounted photovoltaic systems shall have the same fire classification as required for the roof assembly by Section R902.

Installation.

Rooftop mounted photovoltaic systems shall be installed in accordance with the manufacturer’s installation instructions.

Photovoltaic panels and modules.

Photovoltaic panels and modules mounted on top of a roof shall be listed and labeled in accordance with UL 1703 and shall be installed in accordance with the manufacturer’s installation instructions. SECTION R906 ROOF INSULATION

Asphalt shingles.

The installation of asphalt shingles shall comply with the provisions of this section or RAS 115.

Sheathing requirements.

Asphalt shingles shall be fastened to solidly sheathed decks.

Slope.

Asphalt shingles shall be used only on roof slopes of two units vertical in 12 units horizontal (2:12) or greater.

Underlayment.

Underlayment shall comply and be installed in accordance with Section R905.1.1.

Asphalt shingles.

Asphalt shingles shall comply with ASTM D3462.

Installation of asphalt shingles.

Asphalt shingles shall be installed in accordance with Sections R905.2.6 and R905.2.6.1. Table R905.2.4.1 Classification of Asphalt Roof Shingles.

Fasteners.

Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roofing nails, minimum 12-gage [0.105 inch (3 mm)] shank with a minimum 3/8-inch-diameter (9.5 mm) head, complying with ASTM F1667, of a length to penetrate through the roofing materials and not less than 3...

Attachment.

Asphalt shingles shall have the minimum number of fasteners required by the manufacturer, but not less than four fasteners per strip shingle or two fasteners per individual shingle.

Wind resistance of asphalt shingles.

Asphalt shingles shall be tested and classified in accordance with ASTM D3161, TAS 107 or ASTM D7158 and shall meet the required classification in accordancewith Table R905.2.6.1 to resist the basic wind speed in accordance with Figure R301.2(4).

Flashing.

Flashing for asphalt shingles shall comply with this section or RAS 111.

Base and counter flashing.

Base and counter flashing shall be installed as follows: 1. in accordance with manufacturer’s installation instructions, or 2.

Valleys.

Valley linings shall be installed in accordance with the manufacturer’s instructions before applying shingles. Valley linings of the following types shall be permitted: 1.

Sidewall flashing.

Flashing against a vertical sidewall shall be by the step-flashing method or continous “L” flashing method.

Other flashing.

Flashing against a vertical front wall, as well as soil stack, vent pipe and chimney flashing, shall be applied in accordance with the asphalt shingle manufacturer’s instructions.

Drip edge.

Provide drip edge at eaves and gables of shingle roofs. Overlap to be a minimum of 3 inches (76 mm).

Clay and concrete tile.

The installation of clay and concrete tile shall be in accordance with the manufacturer’s installation instructions, or recommendations of FRSA/TRI Florida High Wind Concrete and Clay Roof Tile Installation Manual, Seventh Edition where the Vasd is determined in accordance with Section R301.2.1.3.

Deck requirements.

Concrete and clay tile shall be installed only over solid sheathing, except where the roof covering is specifically designed and tested in accordance with Chapter 16, Florida Building Code, Building to be applied over spaced structural sheathing boards.

Deck slope.

Clay and concrete roof tile shall be installed on roof slopes in accordance with the recommendations of FRSA/TRI Florida High Wind Concrete and Clay Roof Tile Installation Manual, Seventh Edition where the Vasd is determined in accordance with Section R301.2.1.3.

Underlayment.

Unless otherwise noted, required underlayment shall comply with the underlayment manufacturer’s installation instructions in accordance with the FRSA/TRI Florida High Wind Concrete and Clay Roof Tile Installation Manual, Seventh Edition where the Vasd is determined in accordance with Section R301.2....

Slope and underlayment requirements.

Refer to manufacturer’s installation instructions, FRSA/TRI Florida High Wind Concrete and Clay Roof Tile Installation Manual, Seventh Edition where the Vasd is determined in accordance with Section R301.2.1.3 for underlayment and slope requirements for specific roof tile systems.

Clay tile.

Clay roof tile shall comply with ASTM C1167.

Concrete tile.

Concrete roof tile shall comply with ASTM C1492.

Fasteners.

Nails shall be corrosion resistant and not less than 11 gage, 5/16-inch (11 mm) head, and of sufficient length to penetrate the deck not less than 3/4 inch (19 mm) or through the thickness of the deck, whichever is less or in accordance with the FRSA/TRI Florida High Wind Concrete and Clay Roof Tile...

Application.

Tile shall be applied in accordance with this chapter and the manufacturer’s installation instructions, recommendations of the FRSA/TRI Florida High Wind Concrete and Clay Roof Tile Installation Manual, Seventh Edition. Table R905.3.7 Clay and Concrete Tile Attachment.

Hip and ridge tiles.

Hip and ridge tiles shall be installed in accordance with FRSA/TRI Florida High Wind Concrete and Clay Roof Tile Installation Manual, Seventh Edition where the Vasd is determined in accordance with Section R301.2.1.3.

Flashing.

At the juncture of roof vertical surfaces, flashing and counterflashing shall be provided in accordance with this chapter and the manufacturer’s installation instructions, recommendations of the FRSA/TRI Florida High Wind Concrete and Clay Roof Tile Installation Manual, Seventh Edition where the Vas...

Metal roof shingles.

The installation of metal roof shingles shall comply with the provisions of this section. Metal roofing shingles shall be factory or field manufactured in accordance with the manufacturers’ product approval specifications and limitations of use.

Deck requirements.

Metal roof shingles shall be applied to a solid or closely fitted deck, except where the roof covering is specifically designed to be applied to spaced sheathing.

Deck slope.

Metal roof shingles shall not be installed on roof slopes below three units vertical in 12 units horizontal (25-percent slope).

Underlayment.

Underlayment shall comply and be installed in accordance with Section R905.1.1.

Material standards.

Metal roof shingle roof coverings shall comply with Table R905.4.4. The materials used for metal roof shingle roof coverings shall be naturally corrosion resistant or be made corrosion resistant in accordance with the standards and minimum thicknesses listed in Table R905.4.4.

Wind resistance of metal roof shingles.

Metal roof shingles applied to a solid or closely fitted deck shall be tested in accordance with ASTM D3161, FM 4474, UL 580, UL 1897 or TAS 107.

Application.

Metal roof shingles shall be installed in accordance with the approved manufacturer’s installation instructions. The product approval shall state the allowable uplift resistance for the attachment system.

Flashing.

Roof valley flashing shall be of corrosion-resistant metal of the same material as the roof covering or shall comply with the standards in Table R905.4.4.

Mineral-surfaced roll roofing.

The installation of mineral-surfaced roll roofing shall comply with this section.

Deck requirements.

Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs.

Deck slope.

Mineral-surfaced roll roofing shall not be applied on roof slopes below one unit vertical in 12 units horizontal (8-percent slope).

Underlayment.

Underlayment shall comply and be installed in accordance with Section R905.1.1.

Material standards.

Mineral-surfaced roll roofing shall conform to ASTM D3909 or ASTM D6380, Class M or Class WS.

Application.

Mineral-surfaced roll roofing shall be installed in accordance with this chapter and the manufacturer’s instructions.

Slate and slate-type shingles.

The installation of slate and slate-type shingles shall comply with the provisions of this section.

Deck requirements.

Slate shingles shall be fastened to solidly sheathed roofs.

Deck slope.

Slate shingles shall be used only on slopes of four units vertical in 12 units horizontal (33-percent slope) or greater.

Underlayment.

Underlayment shall comply with Section R905.1.1. Underlayment shall be installed in accordance with the manufacturer’s installation instructions.

Material standards.

Slate shingles shall comply with ASTM C406.

Application.

Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. Slate shingles shall be secured to the roof with two fasteners per slate.

Flashing.

Flashing and counterflashing shall be made with sheet metal. Valley flashing shall be a minimum of 16 inches (406 mm) wide.

Untitled

Slate and slate-type shingles shall be installed in accordance with this chapter and the manufacturer’s installation instructions. The product approval shall state the allowable uplift resistance for the attachment system.

Wood shingles.

All wood shingles shall be installed in accordance with this chapter and the manufacturer’s installation instructions, the Cedar Shake and Shingle Bureau New Roof Construction Manual or RAS 130. The product approval shall state the allowable uplift resistance for the attachment system.

Solid sheathing required.

Reserved.

Underlayment.

Underlayment shall comply and be installed in accordance with Section R905.1.1.

Material standards.

Wood shingles shall be of naturally durable wood and comply with the requirements of Table R905.7.4. TABLE R905.7.4 WOOD SHINGLE MATERIAL REQUIREMENTS MATERIAL MINIMUM GRADES APPLICABLE GRADING RULES Wood shingles of naturally durable wood 1, 2 or 3 Cedar Shake and Shingle Bureau

Application.

Reserved. Table R905.7.5(1) Wood Shingle Weather Exposure and Roof Slope.

Nails.

Fasteners to attach wood shingles shall be Type 304 (Type 316 for coastal areas) stainless steel ring-shank nails with a minimum penetration of 0.75 inch into the sheathing. Each shingle shall be attached with a minimum of two fasteners.

Label required.

Each bundle of shingles shall be identified by a label of an approved grading or inspection bureau or agency.

Wood shakes.

All wood shakes shall be installed in accordance with this chapter and the manufacturer’s installation instructions, the Cedar Shake and Shingle Bureau New Roof Construction Manual or RAS 130. The product approval shall state the allowable uplift resistance for the attachment system.

Solid sheathing required.

Reserved.

Underlayment.

Underlayment shall comply and be installed in accordance with Section R905.1.1.

Material standards.

Wood shakes shall comply with the requirements of Table R905.8.5.

Application.

Reserved. Table R905.8.6 Wood Shake Weather Exposure and Roof Slope.

Nails.

Fasteners to attach wood shakes shall be Type 304 (Type 316 for coastal areas) stainless steel ring-shank nails with a minimum penetration of 0.75 inch into the sheathing. Each shake shall be attached with a minimum of two fasteners.

Label required.

Each bundle of shakes shall be identified by a label of an approved grading or inspection bureau or agency.

Built-up roofs.

The installation of built-up roofs shall comply with the provisions of this section.

Slope.

Built-up roofs shall have a design slope of not less than one-fourth unit vertical in 12 units horizontal (2-percent slope) for drainage, except for coal-tar built-up roofs, which shall have a design slope of a minimum one-eighth unit vertical in 12 units horizontal (1-percent slope).

Material standards.

Built-up roof covering materials shall comply with the standards in Table R905.9.2 or UL 55A.

Rosin paper shall be used when the membrane is applied directly to a wood deck or cementitious fiber decks.

Rosin paper shall be used when the membrane is applied directly to a wood deck or cementitious fiber decks.

General.

Where above-deck thermal insulation is installed, such insulation shall be covered with an approved roof covering and shall comply with NFPA 276 or UL 1256.

Material standards.

Above-deck thermal insulation board shall comply with the standards in Table R906.2.

Rooftop-mounted photovoltaic systems.

Rooftop-mounted photovoltaic panel systems shall be designed and installed in accordance with Section R324, NFPA 70 and the Florida Fire Prevention Code. SECTION R908 EXISTING ROOFING

General.

Materials and methods of application used for re-covering or replacing an existing roof covering shall comply with the requirements of this chapter. Exceptions: 1.

Not more than 25 percent of the total roof area or roof section of any existing building or structure shall be repaired, replaced or recovered in any 12-month period unless the roof covering on the entire existing roof system or roof section is replaced or recovered to conform to the requirements of this code.

Exception: If an existing roofing system or roof section was built, repaired, or replaced in compliance with the requirements of the 2007 Florida Building Code, or any subsequent editions of the Florida Building Code, and 25 percent or more of such roofing system or roof section is being repaired, r...

Structural and construction loads.

The structural roof components shall be capable of supporting the roof covering system and the material and equipment loads that will be encountered during installation of the roof covering system.

Recovering versus replacement.

New roof coverings shall not be installed without first removing all existing layers of roof coverings where any of the following conditions occur: 1.

Roof re-cover not allowed.

Reserved.

Reinstallation/reuse of materials.

Existing or salvaged slate, clay or concrete tile shall be permitted for reinstallation or reuse, to repair an existing slate or tile roof, except that salvaged slate or tile shall be of like kind in both material and profile. Damaged, cracked or broken slate or tile shall not be reinstalled.

Flashings.

Flashings shall be reconstructed in accordance with approved manufacturer’s installation instructions or in compliance with RAS 111. Metal flashing to which bituminous materials are to be adhered shall be primed prior to installation.

Wind mitigation.

When a roof covering on an existing structure with a sawn lumber, wood plank or wood structural panel roof deck is removed and replaced, the following procedures shall be permitted to be performed by the roofing contractor: (a) Roof-decking attachment shall be as required by Section R908.7.1.

Roof decking attachment for existing structures with wood roof decks.

Fastening for sawn lumber, wood plank or wood structural panel roof decks shall be in accordance with Section R908.7.1.1 or R908.7.1.2 as appropriate for the existing construction.

Untitled

Roof decking consisting of sawn lumber or wood planks up to 12 inches wide and secured with at least two nails (minimum size 8d) to each roof framing member it crosses shall be deemed to be sufficiently connected.

Untitled

For roof decking consisting of wood structural panels, fasteners and spacing required in columns 3 and 4 of Table R908.7.1.2 are deemed to comply with the indicated design wind speed range.

Roof secondary water barrier for existing structures with wood roof decks.

When a roof covering is removed and replaced, a secondary water barrier shall be installed in accordance with Section R905.1.1 or Section 1518.2 of the Florida Building Code, Building. Exceptions: 1.

When a roof covering on an existing structure with a sawn lumber, wood plank or wood structural panel roof deck is removed and replaced on a building that is located in the wind-borne debris region as defined in the Florida Building Code, Building and that has an insured value of $300,000 or more or, if the building is uninsured or for which documentation of insured value is not presented, has a just valuation for the structure for purposes of ad valorem taxation of $300,000 or more:

(a) Roof to wall connections shall be improved as required by Section R908.8.1. (b) Mandated retrofits of the roof-to-wall connection shall not be required beyond a 15 percent increase in the cost of re-roofing.

Roof-to-wall connections for structures with wood roof decks.

Where required by Section R908.8, the intersection of roof framing with the wall below shall provide sufficient resistance to meet the uplift loads specified in Table R908.8.1 either because of existing conditions or through retrofit measures.

Access for retrofitting roof to wall connections.

These provisions are not intended to limit the means for gaining access to the structural elements of the roof and wall for the purposes of retrofitting the connection.

Partially inaccessible straps.

Where part of a strap is inaccessible, if the portion of the strap that is observed is fastened in compliance with these requirements, the inaccessible portion of the strap shall be presumed to comply with these requirements.

Prescriptive method for gable roofs on a wood frame wall.

The anchorage of each of the exposed rafters or truss within 6 feet (1829 mm) of the corner along the exterior wall on each side of each gable end shall be inspected.

Prescriptive method for gable roofs on a masonry wall.

The anchorage of each of the exposed rafters or trusses within 6 feet (1829 mm) of the corner along the exterior wall on each side of each gable end shall be inspected.

Prescriptive method for hip roofs on a wood frame wall.

Unless it is possible to verify through nondestructive inspection or from plans prepared by a design professional that the roof structure is anchored at least as well as outlined below, access shall be provided at a minimum to the hip rafter (commonly known as a “king jack”), to the hip girder and a...

Prescriptive method for hip roofs on a masonry wall.

Unless it is possible to verify through nondestructive inspection or from plans prepared by a design professional that the roof structure is anchored at least as well as outlined below, access shall be provided at a minimum to the hip rafter (commonly known as a “king jack”), to the hip girder and a...

Priorities for mandated roof-to-wall retrofit expenditures.

Priorities for mandated roof-to-wall retrofit expenditures. Priority shall be given to connecting the exterior corners of roofs to walls where the spans of the roofing members are greatest.