ORDINANCE NO. 833

AN ORDINANCE OF THE CITY OF NAPLES, FLORIDA, AMENDING THE SOUTHERN STANDARD BUILDINGCODE 1957-58 EDITION; PROVIDING CERTAIN AMENDMENTS AND ADDITIONS TO SECTION 706 -ROOF COVERINGS.

NOW, THEREFORE, Be it ordained by the City Council of the City of Naples, Florida:

SECTION 1. That the Southern Standard Building Code 1957-58 EAtion, be amendedby revising and adiing hereto, the following Sections:

Section 706.8 - ROOF SLOPES

Roof slopes shall conform to the following:

a. Slate Shingles (except porches) 3" in 12" minimumb. Clay or cement tile roofing, 3" in 12" minimumc. Shingle and tile porch roofs, 21" in 12" minimum

Built up roofs (gravel or slag surface) 2" in 12" maximumpitch on flat roof specifications and 4" pitch on steep roofspecifications.

e. Built up roofs with mineral surface cap sheet 2" in 12" minimumf. Asphalt and asbestos shingle roofing 3111 in 12" minimumg. When materials and method of application provide precautions in excess

of these minimum requirements to assure a weathertight roof, above slopesmay be reduce or increasei subject to acceptance by Building Official,

NOTE: Double starting row shall be used on allshingle applications.Nails for attaching roof coverings shall be copper or hot dipp-.1galvanized nails.

Section 706.9 - ASPHALT SHINGLES

Fire Underwriters Class C label shall appear on each bundle and complywith Standar.; Specifications for Asphalt Shingles, A.S.T.M. 0225-46; A.S.T.M.D228-48T.

Approximate minimum weights per square (shipping weights) shall be:

Square Butt strip 210 lbs.Hexagonal strip 215 lbs.Individual shingles 250 lbs.

Exposure as required for Fire Un.erwriters Class C Label. Headlap shallbe as recommendei by manufacturer, minimum 2". The roof covering afterapplication shall provide at least ouble thickness at all points. Cutoutsan! spacings between shingles not in excess of 3/4 inch may be disregarded in,etermining compliance with this requirement.

Unerlay shall be asphalt saturated felt, weight approximately 30 lbs.or equivalent per 100 square feet. A minimum pitch of 3 .1-" in 12" may beused when underlay and roofing comply with the following requirements:

Underlay shall be minimum of two layers of felt. Base sheet minimumweight 30 lbs, per square, shall be tin-tagged to roof sheathing, 6" oncenter of perimeter of each sheet and 12" on center throughout the field.Second sheet minimum weight 15 lb. per square shall be laid with hotasphalt (or asphalt roofing cement applied to felt, built up cold as permanufacturer's recommendations.) Asphalt shingles shall have each tabcemented down with asphalt roofing cement.

2

Section 706.10 - ASBESTOS SHINGLES

The cuality of asbestos shingles shall be dense hard structure andthoroughly seasoned. Fire Underwriter's label class A or B shall appearon each buLdle.

Underlay shall be one layer asphalt saturated felt approximately30 lb. per sq .Jare, and shall be tin-tagged to solid roof sheathing 6"on center around perimeter of each sheet, and 12" on center in the field.

A minimum of 3 .-i" in 12" may be used when underlay and roofing complywith the fcllowing requirements:

Unde,lay shall be minimum of two layers of felt. Base sheet minimumweight 30 'bs. per square, shall be tin-tagged to roof sheathing, 6" oncenter aro% Ine perimeter of each sheet and 12" on center throughout thefield. Seord sheet minimum weight 15 lb. per square shall be laid withhot asphal-. (or asphalt roofing cement applied to felt, built up cold asper manufa ,...turer's recommendations.)

Amer can method:

StarCard shingle: minimum weight per square, 470 pounds.

Length of shingle (inches) Maximm Exposure (inches)16 71512 5

Strip method; minimum weight per square, 250 pounds

Dutch method; minimum weight per square, 265 pounds. Minimum head1613, 3 inches. Minimum side lap, 4 inches.

Fren-:th (or hexagonal) method; minimum weight per square, 250 pounds.Minimuff o ,y e•lap two edges, 3 inches.

Section 706.11 - IILE ROOFING

Qual!ty of tile: a good, hard burned clay roofing tile; or cement tilemade of a mixture 1 of Portland cement to 3 of clean sand.

UndeHey shall be 30 lb. asphalt saturated felt, tin-tagged to solidroof sheathirg 6" on center around the perimeter of each sheet and 12" oncenter in the field. This surface shall then be entirely and completelymopped with t3t pitch or asphalt and a second sheet of 85 pound mineralsurfaced o- Elate surfaced roofing laid and firmly pressed thereon while thecoating is still hot, thereby forming a good bond. Nail (tin-tag) top edgeof the 85 roofing 12" on center. 85 lb. roofing shall be lapped 4 incheshorizontal]y and 6 inches at the end laps.

Shinlle tile - American method

Leng:h of shingle (inches)

Maximum exposure (inches)/6 715

612 5

Interlccking tile and curved tile shall be laid according to themanufacturar's recommendations.

florpprp.,

- 3 -

All tile shall be soaked in water at least 1/2 hour continuously beforeapplication on roof. All barrel tile shall be laid full length in cement,and shall provide a mortar joint horizontally between the tile at the headlap. All interlocking tile shall have a minimum headlap of 3 inches.

All mortar used in the laying of roof tiles of any kind shall be amixture of Portland cement to clean sand 1 to 3 (or equal).

All starter tile shall be nailed and cemented All field tile on roofsof 6" in 12" pitch and over shall be spot nailed at the rate of every thirdtile in every fifth row.

Section 706.12 - NATURAL SLATE SHINGLES

Quality of stone: slate shall be free from knots or knurls and ofreasonably smooth cleavage.

Underlay: shall be approximately 30 lb. per square felt, tin-taggedas set forth in Section 706.11, and 85 lb. per square mineral surfaced felt,applied as set forth in Section 706.11, for slate laid in mortar.

American Method: (A minimum thickness of 3/16 inch)

Length of shingle Maximum exposure18 711614 511210 3/

(Subject to the approval of the Building Official after inspectionof typical sample of stonecr slate to be used, application by nailing will beallowed if underlay complies with Section 706.10 Asbestos Shingles.)

Section 706.13 - BUILT UP ROOFS

Asphalt, and tar and gravel coverings, including flashings, shallcomply with requirements of Underwriters Laboratories, Inc.

Class 1 or Class 2 minimum 3 ply on concrete deck or on insulation.

Class 1 or Class 2 minimum 4 ply on a wood deck.

Roofs shall be applied according to the manufacturer's recommendations.Each ply making up the required minimum thicknesses shall be a minimum of14 pounds per 100 square feet.

Gravel surfacing shall be:Roofing gravel or crushed stone or marble, weight approximately400 pounds per 100 square feet; or shall be crushed slag, weightapproximately 300 pounds per 100 sq. ft (Top ply of 14 lb. feltand crushed stone or slag may be replaced by one layer of mineralsurface cap sheet, minimum weight 85 lb. per 100 sq. feet,provided roof pitch is 2" in 12", minimum.) All plys shall bethoroughly hot-mopped on; slag or crushed stone shall be rolledinto a hot flood coat. The base ply shall be tin-tagged on6" on center around the perimeter of each sheet and 12" oncenter in the field.

Built up roofs shall comply with A.S.T.M. D228-48T; D227-47;D226-47; D146-47; D250-47; D312-44 and D450-41, Standard Specificationsfor Built Up Roofing, American Society for Testing Materials.

COO4C3

- 4

Section 706.14 - METAL ROOFS

Materials shall be only the following:

a/ Galvanized sheet metal 28 gauge sheets 1.25 ounce (totalweight both sides) zinc coating per sq. foot.

b/ Copper; 16 ounce soft (roofing temper)

c/ Template (roofing tin) IC or IX, 40 pound coating

d/ Lead; hard, 2 pounds; soft, 4 pounds.

Nails shall be only:

a/ Hard copper or copper alloyshall be used for copper roof;

b/ Hot dipped galvanized nails for galvanized sheet metal roof;

Cl Special nails or clips recommended by the manufacturer ofthe roofing, to be approved by the Building Official.

All seams and joints shall belocked or soldered and made water tight.All metal roofing shall be securely nailed to solid sheathing in a mannersatisfactory to the Building Official to withstand hurricane winds. Rosinpaper shall be placed under metal roofs subject to corrosion. Metal roofingfastened directly to steel framing shall be attached by approved fasteningsto withstand hurricane winds.

Section 706.15 - METAL SHINGLES

All metal roof shingles shall be minimum weight 28 gauge andmaximum size 8" x 12" fastened with nails to each shingle a minimumof two. A 30 lb. asphdt felt underlay shall be used, and if shingles areof the corrosive type, rosin paper shall be used directly under theshingles over the underlay. Metal shingles shall be used over a soliddeck. Nails shall be as in Section 706.14.

Section 706.16 - FLASHINGS (A)

Keterials shall be: Copper, 16 ounce soft (roofing temper);Lead hard, 2 pounds; soft, 4 pounds; (copper or lead is to be used inconjunction with all 15 or 20 year roofs); Galvanized; sheet metalshall be 28 gauge, 1:25 ounce (total weight both sides) zinc coating persquare foot, painted both sides. Tin; 40 pound coating painted both sides.

For built-up roof coverings, cant strips shall be provided at theintersection of horizontal roof planes and vertical parapet walls or othervertical intersections. Built-up roof coverings shall be mopped andcarried at least 6 inches above cant strip to a raglet in the parapet andcovered with metal flashing calked into raglet. Raglet may be omitted atparapet walls provided two layers of felt or the equivalent, appliedwith hot pitch, asphalt or mastic cement are carried across the top ofparapet under the coping and down the inside of the parapet to the loweredge of the cant strip. These layers shall run vertically and be lappedproperly.

VALLEYS (B)

On rigid shingle roofs, valleys shall be flashed with sheet metal,these fleshings to be a minimum of 16" wide. Valleys and all fleshingsused with tile and asbestos shingle roofing shall be lead (2 lb. hard,4 lb. soft) or 16 ounce copper or galvanized sheet metal. All verticalwall Intersections shall be flashed.

Valleys used with asphalt shingle roofs may be two thicknesses ofmineral surfaced 85 lb. per square roll roofing instead of metal. Thebottom layer shall be not less than 12 inches wide, and the top layer atleast 18 inches wide.

GUTTERS AND DOWNSPOUTS (C)

Gutters and downspouts shall be installed and be a requirement if soordered by the Building Official. Materials shall be copper (16 ounce hard,cornice temper) or galvanized sheet metal (26 gauge minimum, 1.25 oz. totalweight both sides zinc coating per sq. foot).

Size of downspouts shall be 1 inch to every 100 sq. feet of roof area.

Scuppers for roof outlets shall be a minimum of 2 sq. /aches for every100 sq. ft. of roof surface; or an overflow of the same size may be providednot more than 2" above the roof deck. All scuppers shall be effectivelyscreened against debris stoppage.

Where leaders are carried down inside of the building, they shallbe the same size as required for downspouts and shall be caulked castiron, screw joint wrought iron water pipe, or copper pipe.

Section 706.17 - GENERAL

Roof coverings under this code, as set forth under Section 706.2,Class 1, Section 706.3, Class 2, and Section 706.4, Class 3, are intendedto correspond to and be equivalent to listing of Underwriters' Laboratories,Inc. for Class A, Class B and Class C. roof coverings, respectively.

Permits for repairing or replacing a roof covering requires a buildingpermit if the area of covering is in excess of 1/3 of the roof area or thework and materials amount in excess of $100.00

A tin-tag inspection must be requested of the city building departmentat least 3 hours prior to time of inspection. Approval must be obtainedbefore proceeding with the covering. The inspector may approve the tin-taggingif a minimum of 3/4 of the tagging area is completed.

Gravel stop for 15 or 20 year roofs shall be 16 ounce copper; 28 gaugegalvanized sheet metal or .025 aluminum. All laps shall be a minimum of 2inches, and soldered. Gravel stops shall have at least a 3" flange onbuilt-up roof with nailing staggered at 4" •.c. nailed with at least Venailsinto sheathing, gravel stops are to be applied after the roof is applied, thenstripped and mopped with 2 plys of 15# felt. The stop and drip pan shall bea minimum of 11" and a minimum of 1" below sheathing. The stop may notextend below the facia board.

Variance from the standard 6" - 12" anchor sheet nailing is requiredon exposed ceilings, accepting 6" nailing on rafters with le nails and12" nailing in the field with approved nails or as required by the BuildingOfficial. Staples may not substitute for nails.

All roofs shall be provided with metal drip edges at eaves and gableends. Material used shall be: for tile and asbestos or slate shingles,16 ounce copper, or equivalant; for other types of roofs, galvanizedsheet metal (both sides) or its equivalent. Minimum lap of drip edge inall cases is 2 inches. Minimum flange on gable and eave drip is 11"nailed as on gravel stops except the drip must be installed between thelayers of felt. The drip pan shall be a minimum of 11 inch width and 1"below sheathing.

All chimney and roof intersections shall be flashed and couderflashedwith metal. Crickets or saddle coverings shall be installed where necessary,and shall be sheet metal, or the same covering as the roof where acceptableto the Building Official.

MAYOR

ARV°Ar 4' , 0 A, ,i Ale IN _..r

IV OP

4164111r/111' - AVAIIK

7. COUNCILMEN

- 6 -

All nails, clips and similar attaching devices for all types of roofcoverings shall be galvanized (hot dipped) or otherwise suitably corrosionresistant to the same degree.

Wood roof decks to which composition roofing is attached shall besolidly sheathed. No roof covering shall be placed over or on top of anyexisting wood shingle roof.

Any non-conforming roofing damaged more than 1/3 of the area of the roof.by fire, flood, explosions, wind, war, riot or Act of God or of man, shallnot be reconstructed and used, but shall be removed and replaced by asuitable roof covering that does conform to this code. Any non-conformingroof covering that is to be replaced in entirety shall be changed to aconforming roof covering.

All tar heating pots or kettles shall be equipped with a "Flash Guard"or other device which eliminates the fire hazard from the heating and meltingof the tar, pitch or asphalt. All tar heating kettles are subject to theapproval of the Fire Chief. During operation, they must be placed in asuitable location to insure maximum safety.

SECTION 2. All Ordinances in conflict herewith are hereby repealed.

SECTION 3. This Ordinance shall be in full force and effect immediately uponIts passage.

PASSED IN OPEN AND REGULAR SESSION OF THE CITY COUNCIL OF THE CITY OF NAPLES, FLORIDA,THIS /if" DAY OF OCTOBER, 1960.

ATTEST:

v

Elsie Lehman,City Clerk

APPROVED AS TO FORM AND TEXT BY CITY ATTORNEY, BEN PARKS

4—/a4k