Specifications v J r + 5 !: 4 a e 4 dk
Commercial /Industrial Roofing Systems `a; gYsit
Dziril 1 Johns Manville Built -Up Roofing Specifications
Specification 4GNC
Four Ply Mineral Surfaced Fiber Glass Built -Up Roof.
For use over wood or other nailable decks on inclines ,
Mailable Deck 7 I Asphalt
of up to 6" per foot (500 mm/m). -,
Sheathing Paper °
Materials per 100 sq. ft. (9.3 m of Roof Area (II Required)
Sheathing Paper. 2 Surface Mineral
■ Perma se Plus, \ ' Surfaced Ca Sheet
t PermaPly 28 or �• c
Wood board decks only 1 layer Ventsulation i
7 �
Felts
GlasBase Plus, PermaPly 28 or Ventsulation Felt 1 ply 2 .
GlasPly Premier or GlasPly IV 2 plies 61 1 j'''' ',1
GlasKap 1 ply 1 N :„.� bx
t a t
Asphalt (Interply): Trumbull" or other JM Approved Asphalt _P_ � 2" L
Incline per foot Asphalt Nominal Weight d -I m
Up to 1" (83 mm/m) 170 °F (77 °C), Type II, Flat 69 lbs. (31 kgs.) W GlasPly Premier z I
9 4• End
1 " to3 "(83to250minim) 190°F (88 0 C), 12 l : or GlasPly IV
Lap --
Type III, Steep 69 lbs. (31 kgs.)
3" to 6" (250 to 500 mm/m) 220 °F (104 °C), Type IV, 4GNC
Special Steep 69 lbs. (31 kgs.)
Up to 6" (500 mm/m) PermaMop 69 lbs. (31 kgs.)
Approximate installed weight 175 - 260 lbs. (79 -118 kgs.). Using GlasPly Premier or GlasPly IV, apply a piece 18" (457 mm)
General wide, then over that, a full width piece. The following felts are to be
applied full width overlapping the preceding felts by 19" (483 mm) so
This specification is for use over any type of approved structural that at least 2 plies of felt cover the base felt/substrate at all loca-
deck (without insulation) which can receive and adequately retain tions. Install each felt so that it is firmly and uniformly set, without
nails or other types of mechanical fasteners that may be recom- voids, into the hot asphalt (within ±25 °F [ ±14 °C] of the EVT) applied
mended by the deck manufacturer. Examples of such decks are just before the felt at a nominal rate of 23 lbs. per square (1.1 kg/rn')
wood and plywood. This specification is not for use directly over over the entire surface.
lightweight, insulating concrete decks.
Design and installation of the deck and /or substrate must result in Surfacing
the roof draining freely and to outlets numerous enough and so Prior to application of GlasKap, cut the cap sheet into handleable
located as to remove water promptly and completely. Areas where lengths (12' - 18' [3.66 m - 5.50 m]). Lay the material out on the roof
water ponds for more than 24 hours are unacceptable and are not and allow it to relax and flatten. To accommodate a full width sheet,
eligible to receive a JM Roofing Systems Guarantee. apply a mopping of hot asphalt, approximately 20 °F (11 °C) above the
Note: All general instructions contained in the current JM EVT, at a nominal rate of 23 lbs. per square (1.1 kg/m (The higher
Commercial/ Industrial Roofing Systems Manual should be consid temperature of asphalt maximizes the bonding of the cap sheet to
ered part of this specification. the ply felts.) Then flop the cap sheet into the hot asphalt. On subse-
quent courses, the cap sheet is positioned upside down, directly
Fleshings over the sheet in the preceding course such that the side lap area
Flashing details can be found in the "Bituminous Fleshings" section of the preceding sheet is exposed. Care should be taken to maintain
of the JM Commercial /Industrial Roofing Systems Manual. 2" (51 mm) side laps and 4" (102 mm) end laps. Asphalt is applied in
the same manner as before, making sure to also cover the 2" (51 mm)
Application exposed side lap. Asphalt may also be applied to the exposed
"upside down" cap sheet, prior to "flopping" it into the hot asphalt.
Over wood board decks, one ply of sheathing paper must be used The cap sheet must be firmly and uniformly set, without voids, into
under the base felt and on top of the wood board deck. the hot asphalt with all edges and laps well sealed.
Note: On roof decks with slopes up to 1" per foot (83.3 mm /m), the
roofing felts may be installed either perpendicular or parallel to the Asphalt
roof incline. On slopes over 1" per foot (83.3 mm /m), refer to Asphalt should meet the requirements of ASTM D 312.
Paragraph 6.11 of this section for special requirements. JM Guarantees require the use of Trumbull" asphalt or another JM
Using GlasBase Plus, PermaPly 28 or Ventsulation, start with a Approved Asphalt.
12" (305 mm) width (a specific base sheet may be a condition of Check with a JM Technical Service Specialist for special asphalt
Guarantee). The following base sheet courses are to be applied full requirements in hot climates.
width, lapping the preceding felt 2" (51 mm) on the side laps and
4" (102 mm) on the end laps. Nail the side laps 9" (229 mm) o.c.
Down the longitudinal center of each felt, place two rows of nails
spaced approximately 11" (279 mm) apart, with the nails staggered
on approximately 18" (457 mm) centers. Use nails or fasteners
appropriate to the type of deck with 1" (25 mm) minimum diameter
caps. For additional fastener information, refer to the Fastener Data
in the "Roof Deck" section of the current JM Commercial /Industrial Refer to the Material Safety Data Sheet and Product Label prior to
Roofing Systems Manual. using this product
* Trumbull is a registered trademark of Owens Corning.
RS -2049 8 -04 (New)
PermaPly° 28
Johns Manville
Description
Johns Manville (JM) PermaPly 28 is a lightweight, asphalt- coated,
fiber glass base felt. It is manufactured by coating a JM wet
process fiber glass mat with a weathering grade asphalt, and then
surfaced with a fine mineral parting agent.
PermaPly 28 is well suited as a replacement for coated organic
base felts, as the fiber glass (inorganic) mat reinforcement is rot °..�
resistant and has low moisture absorption. PYt
Use 1 " =
PermaPly 28 is designed for use as the first or base ply in built -up A .,
and modified bitumen roof assemblies. It is ideal for applications
where mechanical attachment of the membrane to the roof
substrate or roof deck is desirable. PermaPly 28's asphalt coating
makes it suitable for use as an intermediate or ply felt in cold
applied built -up and modified bitumen roof assemblies.
•
Advantages
• Easy to handle and lays fast.
• Exceptional pliability.
• Low moisture absorption, excellent dimensional stability and
resistance to rot make it an ideal replacement for organic base
sheets.
Typical Physical Properties Sizes
Material meets the requirements of ASTM D 4601, Type II. Roll size 300 ft' (27.87 m
Roll length 106' (32.31 m)
Breaking Strength (min.) Roll width 36" (914 mm)
Longitudinal and Transverse .... 44 lb force /in. width (7.7 kN /m)
Moisture at Time of Manufacture (max.) 1.0%
Mass of Desaturated
Glass Felt (min.) 1 7 lb/100 ft (83 g /m
Surfacing and Stabilizer (max.) 65%
Asphalt (min.) 7.0 lb/100 ft (341.7 g /m
Ash (Glass Mat Only) 70 - 88%
PermaPly 28 has been evaluated and approved for use in a
variety of fire -rated constructions and is classified by Underwriters
Laboratories Inc. as a Type G -2 Coated Base Sheet and by
FM Global ®for use in approved FM Global constructions. Consult
the current UL® Roofing Materials and Systems Directory and the
FM Global Approval Guide for specific constructions.
Refer to the Material Safety Data Sheet and product label prior to using
this product.
RS -2016 11 -08 (Replaces 8 -04)
b117 GlasPly° IV
Johns Manville
Description
GlasPly IV is a specially constructed ply felt that is formed by
coating a JM wet - process fiber glass mat with a light film of
asphalt which is then surfaced with a liquid parting agent that
prevents the roll from sticking to itself, while providing a clean,
easy -to -mop surface. Laying lines are applied on the top surface
of the felt so it can be installed with the exposure needed to
provide the correct number of plies required by the specification.
Use alsPfy' ly
. Gut Y
�. Fed
GlasPly IV is intended for use as an integral part of any built -up �. ` � o ,, -- . ,� Mr .
or modified bitumen roofing system, over nailable and non
nailable roof decks and approved types of roof insulation. When ,
installed over nailable decks, a fiber glass base sheet, such as
JM PermaPly® 28, is typically used as the first ply and is usually
mechanically fastened to the deck. Subsequently, layers of GlasPly
IV are set in hot asphalt to "build up" the applicable number of plies.
Non - nailable decks and approved insulations usually have multiple,
layers of GlasPly IV adhered directly to them with hot asphalt Advantages
GlasPly IV has good flexibility, conformability and superior strength • Consistent tensile strength and tear resistance.
in both the machine and cross machine directions. "Brooming -in" • Controlled porosity allows the product to readily accept hot
is not necessary, but use of a squeegee on GlasPly IV after laying it asphalt and disperse it throughout the entire felt, to stabilize the
in hot asphalt will help ensure full contact is made with the asphalt. asphalt after cooling.
• Readily accommodates gassing by venting volatile materials
and moisture during application.
• Low moisture absorption, excellent dimensional stability and
resistance to rot makes it an ideal replacement for organic felt.
• Easy to handle, lays flat, minimizes workmanship related
problems.
• Flexibility and conformability minimizes fishmouths, wrinkling
and ridging.
Typical Physical Properties See the UL Roofing Materials and Systems Directory for
Material is manufactured to meet the strength requirements of acceptable Class A, B or C roof constructions employing
ASTM D 2178, Type IV. GlasPly IV. Factory Mutual has approved the use of this product
Breaking Strength (min.) Ibf /in. in numerous constructions. Refer to the current edition of the
Longitudinal 44 lb force /in. width (7.7 kN /m) FM Approval Guide for details.
Transverse 44 lb force /in. width (7.7 kN /m)
Net Dry Mass of Asphalt- impregnated Sizes
Glass Felt (min.) Roll size 500 ft (46.45 m
Average of All Rolls 61 lb /100 ft g /m Roll length 177' (53.95 m)
Individual Rolls 5 8 lb/100 ft g /m Roll width 36" (914 mm)
Moisture at Time of Manufacture (max.) 1%
Mass of Desaturated Glass Felt
(min.) 1.7 lb/100 ft (83 g /m
Bituminous Saturant (Asphalt)
(min.) 3 lb/100 ft (146 g /m
Ash 70% - 88%
Parting Agent and Stabilizer
(max.) 8 2 lb/100 ft g /m
Refer to the Material Safety Data Sheet and product label prior to using
this product.
RS -2073 12 -08 (Replaces 8 -04)
L AT GGlasKap®
Johns Manville
Description
GlasKap is a mineral surfaced, asphalt coated, fiber glass cap
sheet for use in hot applied built -up roofing systems. It is com-
posed of a fiber glass mat with a high - quality coating asphalt
and a white ceramic - coated granule surfacing on the side to be
exposed to the weather.
Use
GlasKap is used as the uppermost finish ply in a variety of ; GlasKap
•
built -up roofing systems. The ceramic - coated granule surfaced
sheet provides protection to the underlying asphalt and mem-
brane, as well as the benefit of a reflective surface when white y �
granules are used. {
When installing GlasKap, it is important that the mopping
asphalt be at the appropriate temperature: 20 °F ( -7 °C) above
the asphalt's EVT is recommended.
Advantages
• Low moisture absorption, excellent dimensional stability
and resistance to rot make it an ideal replacement for
organic cap sheets.
• Low maintenance compared to roofs that use coatings.
• Should the roof be damaged, repairs are easy to make.
Typical Physical Properties GlasKap is classified by Underwriters Laboratories Inc. as a
Material meets the requirements of ASTM D 3909. Type G -3 Coated Cap Sheet. See the UL® Roofing Materials
Average Mass Per Roll, Exclusive of Wrapping and Systems Directory for acceptable Class A, B or C roof
and Packaging Material (min.): constructions employing GlasKap. FM Global® has approved
No Selvage 69 Ib (31.3 kg) the use of this product in numerous constructions. Refer to the
Mass Per Unit Area of Mineral- current edition of the FM Global Approval Guide for details.
surfaced Sheet (min.) 63.2 Ib /100 ft (3,085 g/m
Mass Per Unit Area of Sizes
Desaturated Glass Felt (min.) 1 7 Ib /100 ft (83 g /m2) Roll size 100 ft (9.29 m
Mass Per Unit Area of Mineral Roll weight 72 Ib (32.7 kg)
Matter Passing a 0.132 in. Roll length 36' (10.97 m)
(3.35 mm) (No. 6) Sieve and Roll width 36" (914 mm)
Retained on a 212 pm (No. 70)
Sieve (min.) 24 Ib /100 ft (1,172 g /m
Mass of Mineral Matter
Passing a 212 pm (No. 70)
Sieve Based on the Mass
of the Coating Asphalt and
the Mineral Matter Passing
the 212 pm (No. 70) Sieve (max.) 55%
Moisture at Time of Manufacture (max.) 1%
Refer to the Material Safety Data Sheet and product label prior to using
this product.
RS -2019 3 -09 (Replaces 8 -04)
4 ; 1999 Roofing Materials and Systems Directory
i.
° -1i
l ,
A a ROOF COVERING MATERIALS (TEVT) ROOF COVERING MATERIALS (TEVT) 213
• 1 ROOFING SYSTEMS (TGFU) — Continued ROOFING SYSTEMS (TGFU) Continued
1 - ; Base Sheet Type G2 "PermaPly 28 ", "GlasBase "' or "Ventsulation" or UL Classified polyisocyanurate insulation, hot mopped or mechanically
' } "DynaBase" (modified bitumen), nailed or hot mopped. fastened in combination (optional) with 1/2 in "Retro -Fit" cover board,
. " , Surfacing: Type G3 "GlasKap ", hot mopped. or 3/4 in. "Fesco" over polystyrene.
' 6. Deck: NC Incline: 1 -1/2 Base Sheet Type G2 "PermaPly 28", "GlasBase" or "Ventsutation ", or
l, '; Insulation (Optional: Any thickness, one or more layers JM "Fesco ", "DynaBase" (modified bitumen), nailed. ` "Fesco- Foam ", "Fiber lass. Roof Insulation ", ISO 1 ", "E'NRG'Y -2" or any Ply Sheet One or more plies "GlasPly Iv', "GlasPly Premier", hot mopped.
' V ... UL Classified polyisocyanurate insulation, hot mopped or. mechanically Surfacing: Type G3 "GlasKap ", hot mopped:
,; fastened in combination (optional) with 1/2 in "Retro -Fit" cover board, 2, Deck: NC Incline: 3
�1, ! or 3/4 in "Fesco" over. polystyrene. Insulation (Optional: Any thickness, one or more layers JM "Fesco ",
Ply Sheet Two or more plies Type G1 "GlasPly IV", "GlasPly Premier", "Fesco -Foam , "Fiber Glass Roof Insulation ", "ISO 1 ", "E'NRG'Y -2" or any
V•
nailed or hot mopped. UL Classified polyisocyanurate insulation;. hot mopped or mechanically
<r . Surfacing: Type G3 "GlasKap ". fastened in combination (optional) with 1/2 in. "Retro -Fit" cover board,
!, 25. Deck: NC Incline: 2 or 3/4 in "Fesco" over polystyrene.
0 tlonal s thickness.
t' - � -• Insulation (Optional): Polystyrene, tY rene, an Y Ply Sheet: Two or more plies Type Gl "GlasPly IV", "GlasPly Premier",
s '" �' Barrier Board: Wood fiber, 1 in min or perlite 3/4 in min. nailed or hot mopped.
r "" " "" " "
l ` � �� M embrane: BondCote , 4 00E5 00E , 6 00E", 800E". Surfacing: Type 63 "GlasKap ", hot mopped.
26. Deck: NC Incline: 2 3, Deck: C -15/32 Incline: 1/2
. 1 Insulation: Apache Products "Pyrox ", Celotex "Hy -Therm AP ", Firestone Insulation Optional : Any thickness, one or more layers JM "Fesco ",
., M I
'l
Building Products'IS095 + ", Atlas Roofing AC Foam II" or Foam III', _� A
9 9 �� fesco -Foam , "Fiber Glass Roof Insulation ", "ISO 1 ", "E'NRG'Y -2" or any
} r 1 in min thickness. UL Classified polyisocyanurate insulation, hot mopped or mechanically
t" ,3)); Membrane: "BondCote ",' "400E", "500E", "600E", "800E ". fastened in combination (optional) with 1/2 in. "Retro -Fit" cover board,
y` 27. Deck: NC Incline: 2
or 3/4 in "Fesco " over polystyrene.
,}7 Insulation: Polystyrene, any thickness. Ply Sheet Two or more plies Type 15 asphalt saturated organic felt,
> Y ` '� , ; ? -' Ranier Board: Perlite or woodfiber, 1/2 in. min thickness. n or hot mopped. p yp p g
Membrane: "BondCote ", "400E ", "500E", "600E ", "800E ".
3 ' Surfacing: Type G3 "GlasKap ", hot mopped.
7. Deck: C -15/32 Incline: 1
4. Deck: C -15/32 Incline: No Limitation
t Insulation (Optional): Any th one or more layers JM "Fesco ",
f > " " " Base Sheet (Optional): "PermaPly 28 ", "GlasBase ", "GlasPly IV ", "GlasPly
"F esco F oam', "Fiber lass Roof Insulation ", ISO 1 ", E'NRGY -2" or any Premier", nailed or adhered with hot roofing asphalt.
'',,,1:4 ,,. UL Classified polyisocyanurate insulation, in combination (optional) with ply Sheet: Two or more plies Type Gl "GlasPly N ", "GlasPly Premier ".
= 4 ' 1/2 in. "Retro -Fit" cover board, or 3/4 in. "Fesco" over polystyrene.
Base Sheet One ply Type GI "GlasPly Premier' or "GlasPly IV ", or Type G2 Surfacing: Type G3 "GlasKap ".
:,t,=','','''-''':`.`i, "PermaPly 28", "GlasBase" or "Ventsulation ", or "DynaBase" (SBS modified Class C
'4, bitumen), hot mopped. 1. Deck: C -15/32 Incline: 1 -1/2
1" ;14 Ply Sheet One or more plies Type G1 "GlasPly Premier", "GlasPly IV ", hot Base Sheet Optional): "PermaPly 28 ", "GlasBase ", "GlasPly IV ", "GlasPly
k . mopped. Premier", nailed or adhered with hot roofing asphalt.
2"" Surfacing: Type G3 "GlasKap ", hot mopped. Insulation (Optional). Any thickness, one or more Layers JM "Fesco ",
; 8, Deck: C -15/32 Incline: 1 "Fesco - Foam',. "Fiber Glass Roof Insulation ", "ISO 1 ", "E'NRG'Y -2" or any
Lt ,, i Insulation: Any thickness, one or more layers 3M"Fesco ", "Fesco - Foam ", UL Classified polyisocyanurate insulation, hot mopped or mechanically
r,_ "Fiber Glass Roof Insulation", "ISO 1", "E'NRG'Y - or any. UL Classified fastened in combination (optional) with 1/2 in "Retro -Fit' cover board,
' f r , , polyisocyanurate insulation. One Layer of 1/2 in. "Retro -Fit Board" may or 3/4 in "Fesco" over polystyrene.
,;"..1 be placed on top of the above insulations but is not acceptable by itself, Ply Sheet One or more plies "PermaPly 28", "GlasBase ", "GlasPly IV" or
', t:
Base Shee "PermaPly 28", GlasBase ", "Ventsulation ", "DynaBase ", 'GlasPly Premier".
' "GlasPly IV ", "GlasPly Premier", nailed. Surfacing: Type G3 "GlasKap ".
' Ply Sheet: "DynaPly" or "DynaBase ", hot mopped. 2. Deck: C-15/32 Incline: 3
, ,, Surfacing: Type G3 "GlasKap ", hot mopped. Base Sheet (Optional): "PermaPly 28", "GlasBase ", "GlasPly IV" or
Deck: C -15/32 Incline: 1 "GlasPly Premier", nailed or adhered with hot roofing asphalt.
i. , Base Sheet " PermaPly 2 8 ", "GlasBase ", "Ventsulation" or "DynaBase ", Insulation (Optional: Any thickness, one or more layers JM "Fesco ",
, . nailed "Fesco- Foam ", "Fiber lass Roof Insulation", "ISO 1", "E'NRG'Y -2': or any
, z Ply Sheet "DynaPly or "DynaBase ", hot mopped. UL Classified polyisocyanurate insulation, hot .mopped or mechanically
Surfacing: Type G3 "GlasKap ", hot mopped, fastened in combination (optional) with 1/2 in "Retro -Fit' cover board,
a t i 10. Deck: C -15/32 Incline: 3 or 3/4 in "Fesco" over polystyrene.
'^ r 2r B S Base he PermaPly 28" or "GlasBase ", nailed or adhered with hot Pty Sheet: One or more plies Type G1 "GlasPly IT or "GlasPly Premier"
• i• `",t PLy S heet: Two or more plies "PermaPly 28" 'Gl as B as e ", "Gl IV "
adhered with hot roofing asphalt.
r Surfacing: Hot, roofing asphalt, "TopGard B ", applied at a Tate of 2 -3
• ., "GlasPly Premier ". gat /sq, "TopGard A ", applied at a rate of 1 -3/4 - 2 gal /sq or "TopGard 8 ",
5, ;,,,-;,,1,-; S G or slag.
, � Y + at the rate of 2 -3 gat /sq in combination with "Fibrated Aluminum Roof
11. Deck: C -15/32 Incline: 2
" Coating ", applied at the rate of 2 gal /sq.
Base Sheet: Coating"
2 8 " or "GlasBase nailed or adhered with hot
�' � ' roofing asphalt. 3 Deck: C -15/32 Incline: Unlimited
'' ` Insulation: An thickness, one or more La ers JM "Fesco" must be 1 in. Base Sheet (Optional): "PermaPly 28 ", "GlasBase ", "GlasPly IV" or
Y Y
f min at 1 in. incline), "fesco - Foam ", "Fiber Glass Roof Insulation ", "ISO 1 ", "GlasPly Premier ", nailed or adhered with hot roofing asphalt.
• , ,, "E'NRG'Y -2" or any UL Classified polyisocyanurate, hot mopped or Insulation (Optional: JM "Fesco ", "Fesco- Foam ", "Fiber Glass Roof
''; :.`: mechanically fastened, in combination (optional) with 1/2 in. "Retro -Fit' Insulation ", "ISO 1 ", ' E'NRG'Y -2" or any UL Classified polyisocyanurate
l over polystyrene.
insulation, hot mopped or mechanically fastened in combination
cover board, or 3/4 in. "Fesco"
t x 4 a: Ply S heet: T wo or more plies Type G1 "GlasPly IV", "GlasPly Premier". (optional) with 1/2 in " Retro Fit` cover board, or 3/4 in "Fesco" over
s„ Surfacing: Type G3 "GtasKap ". polystyrene.
r 12. Deck: NC
Incline: 2 Ply Sheet: One or more plies "PermaPly 28", "GlasBase ", "GlasPly IV" or
i l ` Base Sheet (Optional): " PermaPly 28 "GlasBase ", "GlasBase Plus" or "GlasPly Premier".
y t / "Ventsulation , nailed or adhered with hot roofing asphalt. Surfacing: Type G3 "GtasKap.
' ' Insulation (Optional: Any thickness, one or more layers JM "Fesco ", COAL TAR FELT SYSTEMS WITH HOT ROOFING COAL TAR
R ? :,,,' "Fesco- Foam', "Fiber Glass Roof Insulation ", '150 1", "E'NRG'Y -2" or any Class A
G` S: UL Classified polyisocyanurate, hot mopped or mechanically fastened, in 1. Deck: NC Incline: 1/2
Y' ' combination (optional) with 1/2 in "Retro -Fit' cover board, or 3/4 in. Insulation: Any thickness, one or more Layers JM "Fesco ", "Fesco- Foam ",
x ill "Fesco" over polystyrene. "Fiber Glass Roof Insulation", 150 1 ", "E'NRG'Y - 2", "Retrofit' or any UL
,•; Ply Sheet Two or more plies Type G1 "GlasPly IV ", "GtasPty Premier ". Classified polyisocyanurate insulation, hot mopped or mechanically
a r , Surfacing: Type G3 "GlasKap ". fastened in combination (optional) with 1/2 in "Retro -Fit" cover board"
i' Class B or 3/4 in "Fesco" over polystyrene.
1. Deck: NC Incline: 3 Ply Sheet Three or more plies Type G1 "GlasPly Premier" ,� ° r i"
a
Insulation (Optional): Any thickness, one or more Layers JM "Fesco ", Type I coal tar pitch. r
Fesco- Foam ", "Fiber Lass Roof Insulation ", "ISO 1 ", "E'NRG Y -2" or any Surfacing: Gravel or slag in coat tar pitch. 'a
LOOK FOR THE UL MARK ON .PRODUCT
i s y