Resolution 375-1994
Building Department
RESOLUTION NO. 375-1994
A RESOLUTION ESTABLISHING ADVISORY GENERAL
REQUIREMENTS FOR ROOFING MATERIALS, APPLI-
CATIONS, ACCESSORIES, ROOF MOUNTED EQUIP-
MENT AND INSPECTIONS.
WHEREAS, the devastation caused by Hurricane Andrew exposed
the need for improving the general requirements and inspections
related to roofing; and
WHEREAS, the severity of the damage caused by Hurricane An-
drew forcefully demonstrated the vulnerability of an area which
administers less stringent requirements; and
WHEREAS, Monroe County has established the position of
roofing inspector; and
WHEREAS, Monroe County has mandated both "In Process" and
"Final" roofing inspections; and
WHEREAS, the Monroe County Building Department has created
this resolution in cooperation with the Florida Keys Contractors
Association; NOW THEREFORE
BE IT RESOLVED BY THE BOARD OF COUNTY COMMISSIONERS OF
MONROE COUNTY, FLORIDA THAT:
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The following roofing requlrements arEB~1 ~:peqYJ establlshed:
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A. GENERAL REQUIREMENTS:
1. All applications for Roofing Permits not covered by the
specific requirements of this code shall include a copy
of the manufacturers' literature reflecting roof system
assembly instructions and material specifications for
South Florida applications. Should there be any conflict
between manufacturers construction/specifications and
the directions contained herein, the more restrictive
requirements shall apply.
2. Every roofing component shall comply with the applicable
ASTM standards specified herein, and/or as specified in
Chapter 15 S.B.C.C.I.
3. All such products shall bear the testing logo imprinted
on the material and/or container or shall be marked in a
distinctive manner to define compliance with the stan-
dards, or other such marking as may be deemed appropri-
ate by the Building Official.
4. All metals that have contact with asphalt or mastic
shall be primed with a asphalt based primer.
5. Any special roofing applications shall be pursuant to
the approval of the Building Official.
6. The re-covering of existing roofs is not recommended.
However, if the owner chooses to have such work per-
formed, it shall be allowed only in strict compliance
with Section 1509.13 of the S.B.C.C.I. In addition, the
roofing contractor shall provide (at the time of permit
application) certification; that the existing structure:
a. Is structurally designed for the additional roofing
system specified.
b. Has sheathing and roof structure which are not deterio-
rated.
c. Has a roofing system and insulation which are dry.
d. Has a roofing system which is properly affixed to the
roofing deck.
e. Has a roofing system which consists of only one layer of
roof.
An Affidavit form is available at the Building Depart-
ment.
B. APPLICATION (Minimum Standards):
1. BUILT-UP (Maximum Pitch 3:12)
a. GRAVEL ROOF
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(1) One (1) ply, ASTM D 226 type II (#30) anchor sheet
with 4" headlap.
(2) Tin caps spaced 6" o.c. on laps and 2 staggered
rows 12" o.c. in the field.
(3) Hot mop two (2) plys of #15 asphalt or type IV
fiberglass felt.
(4) Install gravel stop over mopped felts, lapped 6" on
eaves and 3" on rake, nailed 6" o.c. as per Section
C "ROOFING ACCESSORIES" paragraph 4 herein. Seal
with a 4" and then a 6" membrane strip in approved
mastic or a 6" & then a 9" felt strip in approved
mastic.
(5) Flood coat minimum 50 lb. hot asphalt approximately
400 lbs of local limerock or aggregate as per manu-
facturers specifications, minimum of 50% of aggre-
gate to be embedded.
b. SMOOTH ROOFING
(1) One (1) ply, ASTM D226 type II (#30) anchor sheet
with 4" head1ap.
(2) Tin caps spaced 6" o. c. on laps and 2 staggered
rows 12" o.c. in the field.
(3) Hot mop three (3) plys of type IV fiberglass felt
and coat with an asphalt or water base roof coat-
ing, or other approved coatings.
"OR"
Alternate to be 1 fiberglass type IV and 1 mineral
surface fiberglass cap sheet in hot asphalt or
approved mastic. Cap sheet to cover drip edge.
(4) Install drip edge over mopped felts, lapped 6" on
eaves and 3" on rake, nailed 6" o.c. as per Section
C, "ROOFING ACCESSORIES" paragraph 4 herein. Seal
with a 4" and then a 6" membrane strip in approved
mastic or a 6" & then a 9" fiberglass strip in
approved mastic.
c. SINGLE PLY MODIFIED OR SELF ADHERING
(1) One (1) ply, ASTM D226 type II (#30) anchor sheet
with 4" headlap.
(2) Tin caps spaced 6" o.c. on laps and 2 staggered
rows 12" o.c. in the field.
( 3 )
Install drip edge over
fel ts; under cap sheet,
on rake, nailed 6" o.c.
ACCESSORIES" paragraph 4
anchor sheet or mopped
lapped 6" on eaves and 3"
as per Section C "ROOFING
herein.
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(4) One (1) ply and a cap sheet installed in approved
mastic or per manufacturers specifications.
2. COMPOSITION SHINGLES(ie: Asphalt or Fiberglass)
All composition shingles shall be minimum 25 yr. type on
three tab shingles and 30 yr. type on dimensional shingles.
a.
2:12
( 1 )
( 2 )
( 3 )
to 20:12 PITCH
One (1) ply ASTM D226 type II (#30) felt with 4"
headlap.
Tin caps spaced 6" o. c. laps and 2 staggered rows
12" o.c. in the field.
Drip edge nailed 6" o.c. with 4" lap, as per Sec-
tion C "ROOFING ACCESSORIES" paragraph 5 herein.
b. VALLEY ASSEMBLY
(1) 24" strip #30 felt ASTM D226 Type II set in a full
bed of mastic over anchor sheet.
(2) "AND"
For open valleys, 16" preformed or rolled metal (as
specified under "accessories" herein) shall be
placed in the valley and nailed 6" o.c. 1" from the
outside edge of the valley metal, seal edges with
roof cement and membrane.
"OR"
for closed valleys, 36" of modified butuminous base
sheet set in mastic.
c. NAILS: Six (6) 1 1/4" minimum length Nails Per Shingle.
d. INSTALLATION: Apply an 8" width of roof cement to all
eaves, rakes, valleys and starter courses, and seal the
top edge of each preceding shingle in these locations as
you install the shingles. Tab all hip and ridge shingles
with approved mastic.
3. CLAY AND CONCRETE TILE
a. Each roof tile shall have a permanent manufacturers
I.D. mark.
b. Flat or shingle tile shall not be less than 3/8" thick;
barrel or spanish tile not less than 1/2" thick, except
for an overlapping lip.
c. Roof tiles shall be laid in accordance with manufactur-
ers directions for tile, underlayment and fastenings;
supplemented with the provisions of Chapter 15 S.B.C.C.I.
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d. The tile manufacturers written application specifica-
tions shall include but not be limited to the following:
(1) Slope requirement
(2) Underlayment
(3) Tile placement and spacing
(4) Amount and placement of mortar
(5) Fasteners and their placement
e. Roof tile shall not be installed on roofs having an
incline of less than 2 1/2" per foot.
f. Roof tile shall be applied only to solid sheathed wood,
or other nailable decks, with an underlayment of an
anchor sheet of #30 felt and a cap sheet of granular
surfaced organic roll roofing set in hot asphalt or
approved mastic. With roof pitches 4:12 or greater,
felts shall be back nailed 12" o.c.
g. Where the incline of the roof is more than 5" per foot
and less than seven 7" per foot and the tile is to be
mudded on, the bottom three (3) courses shall be nailed
to the sheathing with non-corrosive nails and the
underlayment shall be backnailed 6" on center.
h. Roofing tiles shall have a head lap of not less than 2"
and barrel tile, specifically, shall have side laps of
not less than 1 1/2".
i. Roof tiles shall extend beyond the roof sheathing, at
the eaves, not less than 1/2" nor more than 2".
j. Eave treatment used to close the eave and to elevate the
first tile course to obtain proper slope, shall be one
of the following:
(1) Prefabricated eave closure.
(2) Metal eave closure.
(3) Thickbutt tile/ field tile and starter course.
(4) Mortar eave closure. Weepholes shall be positioned
at the deck to provide proper drainage of any mois-
ture accumulated under all tiles.
4. WOOD SHAKES AND SHINGLES
a. Shingle and shakes of naturally durable wood shall be
applied in accordance with the recommendations of the
Cedar Shake and Shingle Bureau. Preservative treated
shakes shall be applied in accordance with the recommen-
dations of the Texas Forest Service. Application shall
be supplemented with the provisions of Chapter 15
S.B.C.C.I. and manufacturer specifications.
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b. Minimum pitch for shingle application shall be 3:12.
Minimum pitch for shake application shall be 4:12.
c. Shingles and shakes shall be installed with corrosion
resistant nails. Staples are not acceptable.
5. METAL ROOFING - (FIVE V CRIMP)
(a) One (1) ply, ASTM D226 type II (#30) anchor sheet
with 4" headlap on top of solid sheathed decking.
(b) Tin caps spaced 6" o. c. laps and 2 staggered rows
12" o.c. in the field.
(c) Drip edge nailed 6" o.c. with 3" lap.
(d) And one (1) ply separator sheet of rosin paper or
#15 felt applied at time of panel installation.
(e) Wood stripping, if applied, shall be a minimum 1" x
3"pine, nailed 8" o.c. staggered pattern with a
ringshank nail that penetrates at least 3/4" into
or through the roof sheathing.
( f) On exposed beam roof where decking is less than 1"
thick, nail with two (2) nails at each rafter and
one (1) #10 wood screw 8" o.c. between. Nails or
screws shall not penetrate deck.
(g) Any stripping that is pressure treated must be sepa-
rated from the metal roof with a sheet of rosin
paper or #15 felt.
(h) Minimum fasteners to be 1 1/2" #10 wood grip screws
with neoprene washer applied to top of V, not more
than 16" o.c. in the field and 12" o.c. on eaves
and rake edges.
(i) Minimum valleys shall be 16" in width; with a mini-
mum 1" standing center diverter. "V" Sealants to be
used at valleys and flashings are to be one part
polyurethane, butyl sealant or neoprene closures as
recommended by the manufacturer.
(j) Flashings and accessories shall be of the same ma-
terial. There shall be no commingling of different
materials except through using proper adapters.
NOTE: All other type metal roofs are to be con-
structed pursuant to manufacturers specifications.
Such specifications shall be provided at the time
of permit application.
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C. ROOFING ACCESSORIES:
1. METALS - Gravel stop, drip edge, valleys, flashing, etc.
(unless otherwise specified herein) shall be either 26
gage galvanized or stainless steel, 16 oz. copper or
.032" thick aluminum.
2. FASTENERS - Shall be minimum 12 gage, annular ring shank
or barbed nails, heads not less than 3/8"diameter, and
not less than 1" length (except for composition shingles
where the minimum nail length shall be 1 1/4"). Nails
shall be corrosion resistant. Where the architectural
appearance of the underside is to be preserved, a base
sheet may be secured by using fasteners that are less
than 1" in length that do not penetrate through the
sheathing; and then doubling the amount of fasteners
required.
3. TIN CAPS - Shall be not less than 1 5/8" or more than 2"
in diameter; and of not less than 32 gage (.010") sheet
metal. "Cap Nails " with integral heads shall not be an
acceptable substitute.
4. GRAVEL STOP OR DRIP EDGE - Gravel stops shall be raised
above the roof surface a minimum of 3/4". The vertical
face of the stop shall be a minimum of 3" and shall
extend down not less than 1/2" below the sheathing or
other member immediately contiguous thereto. For verti-
cal faces greater than 4" refer to SBCCI Table
1509.14.6.7.
Gravel Stops shall be installed after all roofing felts
have been applied (unless otherwise directed by the
manufacturer I s specifications). Stops shall be attached
by means of 1" long, 12 gage ring shank corrosion resis-
tant nails spaced 6" o. c. Stops shall be joined with a
6" minimum lap (with 3 nails) except for gables where
the minimum lap can be 4". Covers and splice plates
shall be of the same material as the stop, a minimum of
6" long with the entire interior joint coated with flash-
ing cement and nailed with 3 nails.
5. EAVE AND GABLE DRIP Eave and gable drip for tile,
fiber-cement shingles, asphalt shingles, metal shingles
and mineral surfaced roofs shall have a roof flange not
less than 2" wide. The metal profile shall be nailed
wi th a minimum 12 gage annular ring shank nail at 6"
o. c. The nail shall be manufactured from similar and
compatible material to the termination profile. All
composite materials shall be fastened with non-ferrous
nails.
The drip or face flange shall be a minimum of 2" in
width and extend not less than 1/2" clearance from the
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structure. Eave and gable drip shall be lapped a minimum
of 4" at perimeter laps.
6. VALLEY METAL - Shall be installed in compliance with the
manufacturer's instructions over a minimum 24" strip #30
felt set in full bed of mastic over anchor sheet.
7. BASE FLASHING Shall be installed after the roofing
felts have been laid and turned up the vertical surfac-
es, in compliance with manufacturers instructions. Such
fel ts shall be embedded in hot bitumen or an approved
adhesive. Metal surfaces shall be primed and allowed to
dry prior to receiving hot bitumen or cold adhesive.
Metal base flashings, where installed, shall extend not
less than 8" up vertical surfaces in new construction
applications and where possible, in reroof and recover
applications. Base flashings shall extend not less than
4" on the deck and shall be fastened to the deck with
fasteners as provided herein for gravel stop and locked
and/or soldered at end laps.
Base flashings constructed from multiple layers of rein-
forced asphalt materials shall be applied in compliance
with the manufacturers' published application instruc-
tions.
8. METAL COUNTER FLASHING - Shall be built into walls, set
in reglets or applied as stucco type and shall be turned
down over base flashings not less than 3".
Metal counter flashings shall be side lapped a minimum
of 3".
Metal counter flashings, where set in reglets or sur-
face-mounted, shall be thoroughly weatherproofed with a
sealant bead. Primer shall be applied to the substrate
surfaces where recommended by the sealant manufacturer.
Where metal counter flashing is used as the means of
sealing (such as a vented system) it shall be set in an
approved sealant, sealed with an approved adhesive on
the top flange and all joints shall be sealed with an
approved sealant and lapped a minimum of 3".
9. ROOF PENETRATION FLASHINGS - All pipes shall be flashed
with approved lead sleeve-type, pitch pans or other
methods detailed in the manufacturer's instructions.
Lead flashing shall not be less than 2.5 lb. per square
foot. Flanges shall be a minimum of 4".
Other roof penetrations shall be suitably flashed with
curbs, collars, pitch pans, or other approved weather-
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tight methods, in compliance with the manufacturers
instructions.
10. OVERFLOW SCUPPERS AND OUTLETS - Shall be lined with
approved metal or other approved materials set forth in
the manufacturers instructions.
11. GUTTERS AND DOWNSPOUTS - Commercial applications shall
be constructed of metal with lapped, soldered, or
caulked joints and shall be securely fastened to the
building with a corrosion resistant fastening device of
similar or compatible material to the gutters and
downspouts. Gutters shall be secured with gutter straps.
Residential applications shall be as per manufacturers
specifications for residential installation.
D. ROOF MOUNTED EQUIPMENT:
1. PERMANENTLY MOUNTED ROOF-TOP EQUIPMENT - Shall be in-
stalled with clearances sufficient to permit roof and
roof covering maintenance, but in no instance shall the
clearance be less than the following:
ROOFTOP EQUIPMENT HEIGHT
WIDTH OF EQUIPMENT
Up to 24"
25" to 30"
37" to 48"
49" to 60"
61" and wider
REQUIREMENTS (w/o CURBING)
HEIGHT OF LEGS
14"
18"
24"
30"
48"
Solar equipment on sloped roofs shall not be mounted without
sufficient space to allow the flow of water and air to pass
under.
2. ELECTRICAL CONDUIT AND MECHANICAL PIPING SERVING THIS
EQUIPMENT - Shall have a minimum clearance of 8"
3. CONDENSATE LINES - Shall not be required to have a mini-
mum roof-top clearance.
4. ROOFTOP EQUIPMENT THAT REQUIRES CURB MOUNTING Shall
have curbs constructed from pressure treated wood or
galvanized metal that has been mechanically attached to
the building structure. The height of the curbing shall
be in accordance with the equipment manufacturers recom-
mendations.
Attachment to wood "sleepers" which are attached to the
deck shall not be an acceptable alternate.
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E. REQUIRED INSPECTIONS:
5.
1.
SHINGLES
a. In Progress:
Anchor sheet installed with tin caps and
drip edge metal, valley felt in mastic,
shingle installation started.
Roof completed (nails, mastic, accesso-
ries) .
Anchor sheet installed with tin caps,
ply sheet installation started.
Roof completed (manufacturers specifica-
tions, flashings, final coatings).
Anchor sheet installed with tin caps and
drip edge metal, metal pan installation
started.
Roof completed (manufacturers specifica-
tions, flashings, accessories, screws).
Anchor sheet installed with tin caps and
drip edge metal, cap sheet installation
started.
Cap sheet installation completed with
all valley metals in place, tile instal-
lation started.
Roof completed (manufacturers specifica-
tions, flashings, closurers)
Anchor sheet installed with tin caps and
drip edge metal, valley felt in mastic,
shingle installation started.
Roof completed (nails, mastic, accesso-
ries) .
6. SPECIALTY MEMBRANE
a. In Progress: Surface preparation (mfg. specs.) recov-
ery board installed, membrane installa-
tion started.
B. Final: Roof Completed (termination bars, flash-
ings, accessories).
b. Final:
2.
BUILT-UP
a. In Progress:
b. Final:
3.
METAL
a. In Progress:
b. Final:
4.
TILE
a. In Progress:
b. In Progress:
c. Final:
WOOD SHAKES
a. In Progress:
b. Final:
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NOTE:
THE COUNTY WILL PROVIDE A 32 FT. LONG (MAX.)
O.S.H.A APPROVED LADDER FOR INSPECTION ACCESS. ANY IN-
SPECTION REQUIRING A LADDER GREATER THAN 32 FT. IN
LENGTH, WILL BE MADE BY MEANS OF AN O. S . H. A. APPROVED
MEANS OF ACCESS PROVIDED BY THE CONTRACTOR OR THE OWN-
ER/BUILDER.
The Clerk of the Board is hereby directed to forward one (1)
certified copy of this Resolution to the Division of Growth
Management.
PASSED AND ADOPTED by the Board of County Commissioners of
Monroe County, Florida, at a regular meeting of said Board held
on the 22nd day of November, A.D., 1994.
Mayor Freeman yes
Mayor Pro Tern London yes
Commissioner Ibuglass yes
Commissioner Harvey yes
Commissioner Reich yes
BOARD OF COUNTY COMMISSIONERS
OF MONROE COUNTY, FLORIDA
cS~t~
By
(SEAL)
ATTEST: DANNY L. KOLHAGE, CLERK
BY: .t/~J""~~~.~
DEPUT CLE
.,
AI TO FOIl"
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