HomeMy WebLinkAboutFile Documents.119 S Spring St.0061.2019 (22).ACBK ESR-2831 I Most Widely Accepted and Trusted Page 5 of 15
TABLE 2—FIRE CLASSIFICATION ASSEMBLIES—ADHERED ROOF COVERING SYSTEMS
MAX.
SYSTEM ROOF DECK2 ROOF INSULATION' BARRIER OR COVER MEMBRANE
NO. CLASS SLOPE BD./BASE/PLY SHEET
(Optional) 1/2-inch thick
1 A Noncombustible 1/4:12 UL-classified polyisocyanurate, "ISOGARD HD" UltraPly TPO
any thickness
(Optional)
2 A Noncombustible 1/4:12 Min. 1-inch to max.4-inch-thick --- UltraPly TPO
Firestone"ISO 95+GL"
11/2-inch-thick Firestone"ISO 95 ,
3 A Combustible 21/2:12 +GL„ /2 inch thick"DensDeck" UltraPly TPO
4 (Optional) Min. 1-inch thick
4 A Combustible /4:12 Min. 1-inch to max.4-inch-thick "ISOGARD HD" UltraPly TPO
Firestone"ISO 95+GL"
(Optional) Min. 1/4-inch thick
5 A Combustible 1:12 UL-classified foam plastic "DensDeck", UltraPly TPO
insulation, "DensDeck Prime"or XR
any thickness "DensDeck DuraGuard"
)
6 B Combustible 1/4:12 Min. 1-inch tomax.i4-inch-thick '/2 inch thick UltraPly TPO
Firestone"ISO 95+GL" "ISOGARD HD"
UL-classified foam plastic Min.7/16-inch thick UltraPly TPO
7 B Noncombustible 1:12 insulation, APA-rated OSB XR
any thickness
8 B Noncombustible 1:12 4-inch-thick Firestone"ISO 95+ Two plies,Type G2 UltraPly TPO
GL" "MB Base Sheet" XR
Two plies,Type G2
9 B Noncombustible 1:12 4-inch-thick Firestone"ISO 95`+ "MB Base Sheet", 1 ply UltraPly TPO
GL" "APP 170", XR
1 ply"APP 18OFR"
Existing
Class A,B or Existing Class A,B or C
C system to t UltraPly TPO
10 retain Combustible /2:12 uninsulated BUR system --- XR
existing (mineral surfaced cap sheet)
classification.
For SI: 1 inch=25.4 mm; 1 ft'0.305 m; 1 psf=47.88 Pa.
'All foam plastic insulation must be UL classified and limited to the maximum thickness in accordance with Section 5.4 of this report or the
maximum thickness in accordance with this table,whichever is less.
2Wood deck must be minimum 15/32-inch-thick (11.9 mm) plywood. Steel deck must be minimum No. 22 gage galvanized steel [0.030 inch
(0.76 mm)].Concrete must have a minimum compressive strength(f0)of 2500 psi.
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RECEIVED
08/06/2019
ASPEN
BUILDING DEPARTMEN'
ESR-2831 I Most Widely Accepted and Trusted Page 6 of 15
TABLE 3—FIRE CLASSIFICATION ASSEMBLIES—MECHANICALLY FASTENED ROOF COVERING SYSTEMS
MAX.
SYSTEM ROOF DECK2 ROOF SLIP SHEET INSULATION' BARRIER OR COVER MEMBRANE
NO. CLASS • SLOPE BD./BASE/PLY SHEET
1 A Combustible 5:12 1.5-inch-thick Firestone Min.'/4-inch thick UltraPly TPO
"ISO 95+GL" "DensDeck"
15 inch thick ISO (Optional)
.
• 2 A Noncombustible 1:12 gS+GL 1/2-inch-thick Ultra Ply TPO
ISOGARD HD
(Optional)
3 A Noncombustible 3/4:12 UL-classified foam 1/2-inch thick UltraPly TPO
plastic insulation, "ISOGARD HD"
any thickness.
Two layers of •
GAF
"VersaShield®
Fire-Resistant
1:12 Roof Deck
4 A Combustible Protection"or --- --- UltraPly TPO
GAF
"VersaShield®
Solon' Fire-
Resistant Slip
Sheet
(Optional) .
5 B Combustible 1/2:12 Min. 1-inch to max.4- '/2-inch thick UltraPly TPO
inch-thick "ISOGARD HD"
Firestone"ISO 95+GL"
One layer of
GAF
"VersaShield®
Fire-Resistant
Roof Deck
6 B Combustible 1:12 Protection"or --- --- UltraPly TPO
GAF
"VersaShield®
Solo TM Fire-
Resistant Slip
Sheet
7 B Noncombustible 1:12 4-inch-thick Firestone One ply of MB Base Sheet, UltraPly TPO
"ISO 95+GL" 1 ply of Type G3 XR
For SI: 1 inch=25.4 mm; 1 ft=0.305 m; 1 psf=47.88 Pa.
'All foam plastic insulation must be UL classified and limited to the maximum thickness in accordance with Section 5.4 of this report or the
maximum thickness in accordance with this table,whichever is less.
2Wood deck must be minimum i5/32-inch-thick (11.9 mm) plywood. Steel deck must be minimum No. 22 gage galvanized steel [0.030 inch
(0.76 mm)].Concrete must have a minimum compressive strength(fc)of 2500 psi.
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08/06/2019 '
ASPEN
BUILDING DEPARTMEN'