Plans • P 141 1 111 03 08:06 FAX 503 624 7755 PACTRUST 0 002
( PFcF.IVF.D 00/1 13:69 19Ba;AT PAGE ' l (PRINTED TARE 1) ] 141001 08/12/2003 •12:14 FAX GROUP YACKENZIE
e 3— Ow(i 2�
G R D 11 Q-- -_.... RECEIVED
- • MACKENZIE
-- _ (AUG 14 ?nal
CITY OF TIGARD
August 12, 2003 BUILDING DIVISION
Viitala Management '
Attention: John Wiitala
15350 SW Sequoia Parkway, Suite 300
Portland, OR 97224
Re: Pactrnst Business Center, Buildings B and D
Re Roof Analysit.
Project Number 2030199.00
a• N
N Dear John:
r
WI C. t3 Group Mackenzie head completed its analysis of the existing roof struuturt fur 1dings B 21E1
Si ry
Ill at the Pactrust Business Center in Tigard, Oregon. Our analysis irn .iegte5 tit the Hoof
c �" 5Ducture is capable of supporting anew roof membrane without remavin i die existing roe 6 ng
Mat erial. 1
if 1 .
a Ji I
e' €
Our analysis is base on the information provided by Protemp g
Asc� ciate showin the
aproximate layout and weights or the roof top mechanill units and the report limn Timber
r 3 Products Inspection (attached) regarding the grade of the 4x 16 roof jou :s. Furthermrnc, we
c,' o understand that the mechanical unit screens will not be replaced, and that all remaining pieces
a
Will be removed.
It should be noted that =calculations suggest that some areas of the oof will be slightly
t4 w, overstressed. However, these frames members will be lms than 5% oti : rstressed, which is
$ generally acceptable in engineering practice.
t.
f
If there are any questions or contemn regarding this matter, please feel Toe to contact us.
J•
Sincerely, !
tnrorpnvmed 4 t N d t O er
t n 1 111 . .1 P.B 6. IS T r—
SKS/mpd f
r` t n.f r . 0 , w4�
'D .
G
r”ginenrir.g. (1) enclosures .4 ..1 t 5 •
1rirrr,rntea tdv �`,
c: Dennis Woods — Group Mackenzie 14"..a, �
t ... FIRES: I .E"9 I_.,,� I
•
II- •n, !hie, t,f
Fr7in?r:i., and
Mf:otcauc'Softo , HAPR0.1181,`•141; 1171'
re•ft,eaec.
I i
111 ' 1999 Roofing Materials and Systems rectory
, i '.I.'!' ROOF COVERING MATERIALS'(TEVT) / .....N..... , ROOF COVERING MATERIALS (TEVT) 2 13
1 lr ; ROOFING SYSTEMS (TG FlJ)•— Continued ROOFING 'SYSTEMS (TGFIJ)— Continued
,I Base Sheet: Type G2 " PermaPly 21i ", "GlasBase'" or "Ventsulotion" or • UL .Classified. polyisocyanurate i
n,, , hot mopped or r u dealt ail,
i1 1,“ "DynaBase" (modified bitumen), nailed or hot mopped. ; ,, fastened in combination (optional) wit 1/2 in. "Retro -fit" cover h.;a,u.
; ' Surfacing: Type Gs "GlasKap ", hot mopped. • . ; h i' .1. ;or 3 /4.in :. "Fesco ". over polystyrene: ,. I
ji ' ' ` J 6, • Deck: NC I ncline: '1 1/2 t I t, l' Base Sheet:�,.Type,.G2 "PermaPly 28 ",:'GlasBase" or "Ventsulatiun' or
Il, ` I , Insulation (Optional): Any thickness, one or more layers JM "fesco ", "DynaBase^ (modified bitumen), nailed.
I' : ; "Fesco- Foam', "libel Class Roof insulation ", "ISO 1 ", "E'NRG'Y -2' or any ; i 11 Ply One'br more_plies "GlasPly IV`, "GlasPly Premier", hot mopped.
1 I '1 ,: UL Classified polylsocyanurate insulation, hot moppediar mechanically , .i.sSurfaelng :• Type G3''GlasKap', hot' mopped.
.
! I 1 , ' in fastened in combination (optional) with 1/2 in "Retro -Fit" cOver.board, •2..- Deck NCi;•' " 1d :`1 , "t: "0 " i ,,,, 1 - i I cline: 3 •• .
, , "" polystyrene.
,, . • or 3 / 4 in. "resin" over p Y st• / rene. , i Insulation ' oval : Any thickness, one or more Layers J+1 °Fesco",
Ply Sheet: Two m mule plies Typo G t "GlasPly IV ", "GlasPly Premier', . • "Fesco-Foam • fiber Glass Roof Insula on ", "ISO 1 ", "E -2" on an
I '! nailed or hot mopped. 1 UL, Classified isotyanu ate insulation, hot mopped or ntechanicady
�' I.1; Surfacing: Type G i "r,hrsKap ' 1 fastened in c ombination (optional) with 1/2 in. "Retro -Fit" cover board, 1 i ,, 25.! Deck: t1C incline: 2 : • I or 3 /4'in. ;' over polystyrene. • . 1 '
. Insulation (Optional): ): Poly :.tyrene, any thickness. 1 ' Ply Shee Two or•more plies Type G,1 "GlasPly' IV",' "GlasPly Prerniel ".
Barrier Board: Wbodl libel, 1 nn. rain of perlite 3/4 in. in.; i
Mernbr n "Bon Cute, " 4Oli a 'nailed O T 4 m ppedT • : •
, 1 ' a e: d (,. "56 - "fOOE ", 800E ". .� ,�� p : '
In 26. Deck: NC "P ru< Incline: Therm, AF "', Firestone 3. ' Deck C 1S 321 '1 ....'' A'n Itht} mopped
,' g: T yp G ; G)as p „hot
1 Insulation: Ap:rcha } y• / , I�iclinei 1/2
Insulat ( c y ckness; one or more layers 3M "Fesco .
't i • l ld I'rods • I O 'UL'Cla
c ct 95 ' ,Atlas Pooling noPooling M, Foam 11' or"AC Foam III', ' , "Fesco- foam . "fiber Glass Roof Insulation ", , °)S0.1 ", "E'HRG'Y -2" on „ ,
Membrane: "BondCur. "40(4', 'SuOE °, °oOOE "80uE ". '' ssified,'p,lyisocyanutate insulation, hot mopped or mechanically
li 1 27. Deck: bC Incline: 2 fastened in c (optional) with 1/2 in. "Retry -Fit" cover bald.
. or 3/4 in.• "Fesc over polystyrene.'.' ''' ' •' ,
Insulation:, any tl,iel:r,es;. , r .
�, a Ply 'Sheet: TWo' or' more ,plies,Type;15 asph saturated organic tilt.
ar
Brier oa: e
Board: Pnile or won ei, df l/2 in. min thickness. i thik 1 l
,i nail or hot mopped r
Membrane: "8ondt ore ".. '4001 "5vul ", 'GOOF " , "8OaE L t
1 t; Surfacin • Type' G3 "GlasKap , hot mopped.
T • Deck- 3 , Incline: 1 4 Deck 9• D
; Fesco- lon ", "Fin C ; 15/32 ; ;, ' I . I' cline: No limitation •
', ( ••?;„[!! Tnsrilation'• Optional: Any tl,icCr.,::.s, one m more layers JM "Fesco " ;, • 'i
' ' " ,:I glass Roof Iremlation" "1St) 1" "E,NTIG 1' 2 or any Base Sheet ' Per 28 ", GlasBase ", "GlasPly IV" "Gt :r : :1't•,
n" y or Premier”, nailed adhered with hot roofing asphalt.
• ., Ill Classified polyi:.ocyanurate insulation, in combination (optional) with ,
1' I/2 ill. "Ketrm -fit` ru.rl hoard, (A :i ill. "Pesro" over polystyrene. ,1 , Ply Sheet Two or :more plies Type GI "alasPly IV ", "GlasPly Fre.uier•
• 1 • .' Base Sheet: One ply Ivy! G1 "Iil.,, P(y {'r;:nlier" or " IV ", or Type G2 .'C! Surfacing: Type 63 GlasKap .
' 1 ' "Pe,ni Plj 28" " Gl..`,iid•.,> •• of "Ve1,1;111d(i4,11", I)1 "flynatilsr" (SRS modified is ' ', •, 'It''' ••' Class C •
bitumen), hot uwl,{,eri. 1. Deck: C- 15/32 t . • :' • Incline: 1 -1/2
i; .1.. Ply Street: One or mau: pile:. lype 1.1 'Gl,, :a'ly Premier", ;'GlasPly iV ", hot !; '• Base Sheet,(Optional)): "'PermaPly 28 GtasBase ", "GlasPly 1V" "GI.,,!'i
i mopped. 1 ' , Premier', nailed' or• adhered with hot roofing asphalt.
!t . Surfacing: lype G i "wasKap ", hot mopped. • • Insulation (Optional ) : Any thickness, done or more layers J:4 "res. ,' .
', 8. Deck :'I' -15/32 Incline: 1,4... ,,• „.1' ” esco- Foam' " ib • r !• F .t•F' er G Roof Insulation", "ISO 1 • "E'1lRG "y -i" ,r an.
,I: '. Insulation: Any thickness, one ni mole [dyer: JM "fesco :'
, 'Fesco, - o' Foam', t ■,. UL Classifiedl'polyisocyanurate insulation, hot mopped or meciianu a:1 •
i;:.1' "Fiber Glass Rout insulation ", "lSO 1', 'E'llltVe - 2" or any Ill Classified .fastened in combination (optional) witl 1/2 in. "Retro -Fit" core. u,).,nt
1 I" p insulation. (me to }•et of 1/2 ire. "Retro•Fit Board" pray • I;. or 3 /4•in, "Fesco" over polystyrene.
be placed on top c,f file above insulations but is not acceptable by itself. :.! • PIy Onelor more plies "PermaPly 28 ", "GtasBase ", "GIa:,Fty 1:' ,.
• Base Sheet: "Pe.maPl 28 ", "GtasBase ", "Ventsulatiorr ", "DynaBase", .
, y Y "GlasPly Prergier'. :
:;1 jt „ "GlasPly IV", "GlasPly Premier , nailed. 1 Surfacing: Type G3 "GlasKap ". i
• Ply Sheet: " Dynan ty" or "llynatia :,e ", hot mopped. 2. ; Deck: C -15 32, I
1 i'. f: Surfacing: Type Gs "GI,Is.Kap ", hot mopped. j Base Sheeti,(Optiona
/ , . ., , , •, - Incline: 3
1 1 1,, ;
D eck; Sur fa ing: T Incline: 1 � F l : ' "PermaPly 28 ", "GtasBase ", "GlasPly Iv' ;.
�I 't Base Sheet: "PenoaP{ • r • • "GlasPly Premier, nailed or adhered with hot rooting asphalt.
ill y 28 ", Glnstlase ", "Ventsulatiorii or 'DynaBase ", 1 sulation } t An .t hickness, lone or more la ers ]t 'f,;,.,'.
n (,
D Y Y
t , nailed.. seas ",Fesco =Foam; "fiber lass Ro of Insulation ", "150 1 • E'NRGY ur n;
•r.1 :' Ply Sheet "DynaPly" or "DynaBase ", hot mopped,' . UL Classified, Ol so anurate insulation, hot mopped mecca ni, _ a,
I I'
' ' Surfacing: Type G3 "GlasKa) hot mopped. P • Yi ry PP d or '
!�! � . 9' YD I "• DD fastened in combination (optional) with 1/2 in. " Retro- Fit" cover i,::•. �" 10,IDeck:. C - 15/32.. I 3 . • .
, , �t>I' , � � or 3/4 in.: °Fesco" over. polystyrene. 1
,,1 , .1, Base Sheet: " PermaPly ; 28" or " GlasBase ' " , nailed or adhered with hot : 1•1 Ply Sheet: One lor'more plies Type G1 2'FlasPty IV" or "GlasPly Preun, ,' .
l) r oofing asp 1
I r lt e .'adhered wit '. roofin as halt:!'
ti : Ply Sheet: Two or more plies " PermaPly 2 lt " , ; ' GtasBa s" , "GlasPly IV ", y . p
l t I " GlasFt P " �Surfa gr Hot fing jroo asphalt,! "TopGard B " appl at a rite OT i
i f, t , • ; y _t censer'. t s 'To Gar A, applied at a of 1 -3 4 - 2 al s or i, ,G,rro ii'
. 9al / 4 P d ' DP / 9 g " I
S ur f acing: Gravel or slag.
I . .i , f / i g/sglin lu.ninum h , c
• 11 Deck• C -15 3[ Incline: 2 at the rate of 2 -3 at
! tio q
with "Fibrated
'i 1; ` �II;' '.' • Base. Sheet:, "PermaPly 28" or "GlasBase ", nailed or adheipil with hot Coating " ,.applied at the rate of 2'gal /sq. •
,il i+ 'j roofing asphalt. • ' 3. 'Deck: C- 15/32! 1 •1 1 • Incline: Unlimited
Base Sheet �'i 0 tional): " PermaPly 21� ", "GlasBase ', "GlasPly IV
I. I' i . ..; I
i thickness, one or more layers .3M "Fesco" (must be 1 in. : l "GlasPl P hailed dhd with hot halt.
• r i' I , min at 1 in, incline). "Fesco•Foam ", "Fiber Glass Roof insulation ", "i50 1 ", y or aere ot roofing asphalt.
1
I ; i r • "E'NRG'Y -2" or ally ill- Classified l •sods anurate, (rot mopped ed or Insulation ((0�pp JM' "Fesco ", "Fesco- Foam ", "Fiber Gt.' :; i:,.;1
` Y I ,o Y y Insulation";'"ISD 1 ", E'NRG'Y -2 ",or an Ill Classified of i , u,, mt •
i, mechanically fastened, in combination (optional) with 1/2 in "Netro 11 P Y s,
cover board, or 3/4 in. "fesco" rivet polystyrene. 1 1 insulation ;il,i(otA mopped or methani ally fastened in t „nri,,.,.11,., • s . 1 Ply Sheet: Two or more plies. hype 1,1 "GlasPly 1V ", "GlasPly Premier ". (optional) wttth!1 /2 in: "Retro -Fit '.cov • board, or 3/4 in. ' fesr,.' ,
: /1.• Surfacing: Type G i " GlasKap". polystyrene:? ; r' I.':', , , r , .
1( i'. 12. Deck: NC incline: 2 . ' 1 i Ply Sheet:One plies "PermaPly 28 ","GlasBase ", "GlasPly ly ,.,
Base Sheet (Optional): "PermaPly 28 ", "GlasBase' ", " GlasBase Plus" or "Gla Premier":; '. , I 1 '' '
l '. i ' ' "Ventsulation nailed or adhered with hot roofing asphalt.. + Surfaci Type ;G3 {GlasKap.; I 'f
� f!
, Insulation (Optional): 'Any thickness, one or more layers JM "Fesco ", . , 1 . ;, COAL TAR, EL 1 MS•W1TH HO ROOFING COAL TAR
.;, Fesco -Foam
. ; ISO 1 ,. Y Y . P' • ! " , 'Fiber Glass Roof Insulation" " "' E NRG 2." or an + ("f :'1.1;.';.; i ; 'ib . .. ,•,. .k zy ;1 E
. • :;�, ,lsii , ClassA. i ; • ,,..
11 nisr i.. 'U1. Classified'polyisocyanurate, hot mopped mechanically fastened, in I. 1•Decka,NG ii `l ' l 1 1 tt, > : ,,, ,; I ' t din , e: 1/2; 1 • I I i ; ,,;i c (optional) with 1/2 in. "Retro)Fit” cover board, or' 3 /4 in. , ' Insulat thickness,; on e or sn .ayrers JM "Fesco ", "f esco •Fodm; ",
t ,, "Fesco' over polystyrene. 1 • "Fiber( Glass; Rgof LnsU4atippt „"ISQ ; . 'ENRG'Y•2 ", "Retrofit" or any ui
j. Ply Sheet:, Two or more plies; •lype G1 "GlasPly iV ", "GlsPly Premier'...' ,,.t s o anura insu l at i on; hot,._mo eo or mechaniralt •
i I ,. Surfacing: Type: G s " GlasKap" , D! cY e 3 PD
: fastengd,in ;corryhilldtign ( gptional) with 1/2 in. ' Retra; Fit” cover b,;ard.
I., , Class D , • i .-:,o ;3 /4rin. Fp
'sco':gyer. poly e ;
styren: I , I 1 ,
i 1 ll ;1.' Deck: NC incline :3 ' I . .,r, Pty „SheetttThroe' or more !plies' Type G1 ".GIasPLy Premier', ASTM D4:iu
(V; ! insulation (Optional): Am. 1 hi; :last ;:,, one or more layers JM "Fesco ", Type 1.coal, itch. . ' ,,i , •
1 1
; kiwi . Surfacing: Gravel-or slag .. • . coali p •, • • il 1 "Fe sco -Foam", am' "Fd, r Glass s as' ,f I r .:uLaicn "ISO; ] ". , "E'NRG'y -2 ",or any ,:,'i
i ; " ON
LOOK:FOR THE UL :•M � . • • ••
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•
.
J ul Built -Up Roofing Specifications
Johns Manville Specification 4GNC
Four Ply Mineral Surfaced Fiber Glass Built -Up Roof.
For use over wood or other nailable decks on inclines
of to 6" per foot (20.8 to 500 mm/m). Naitable Deck Asphalt
Asphalt
For Regions 1, 2 and 3
Sheathing I ape`
GlasKap
ra • Materials per 100 sq. R. (9.3 m') of Roof Area GlasBase Plus. \\ . LaP .
• ' M Cap ine Sh eet Surfaced
PermaPly 28 or .
,
Sheathing Paper: Ventsulation End Laps
Wood board decks only 1 layer . � — 2' La Staggered in.) • 2
14 +
Felts:
GlasBase Plus, PermaPly 28 or Ventsulation Felt 1 ply 1.4_ t 8 �l — _
GlasPly Premier or GlasPly IV 2 plies N �t t .. 1
GlasKap, Mineral Surfaced Cap Sheet 1 ply 1 1;;_.
• \ . . : .- :z - Lap ,
Asphat (nterply): Trumbull or other JM Approved Asphalt
Incline per foot Asphalt Nominal Weight G lasPly Premier B tnu Up to 1" (25 mm) 170 °F, Type II, Flat 69 lbs. (31 kg) Glasy IV Lap T
1 " to 3" (25 to 76 mm) 190 °F, Type ID, Steep 69 lbs. (31 kg)
3" to 6" (76 to 152 mm) 220 °F, Type IV, Special Steep 69 lbs. (31 kg) 4GNC
0 to 6' (0 to 152 mm) PermaMop 69 lbs. (31 kg)
Approximate installed weight 175 - 260 lbs. (79 -118 kg). information, refer to the Fastener Data in the "Roof Deck" section of the
current JM Commercial /Industrial Roofing Systems Manual.
General •
This specification is for use over any type of approved structural deck Using GlasPly Premier or GlasPly IV, apply a piece 18' (457 mm) wide, then
(without insulation) which can receive and adequately retain nails or over that a full width piece. The following felts are to be applied full width
other types of mechanical fasteners that may be recommended by the overlapping the preceding felts by 19" (483 mm) so that at least 2 plies of
deck manufacturer. Examples of such decks are wood and plywood. This
is felt cover the base felt/substrate ly set, with out voids, into the hot asphalt (within :25 °F
at all locations. Install each felt so that it
specification is not for use directly over lightweight, insulating concrete firmly and uniformly set, without
decks. [t14 °C] of the EVT) applied just before the felt at a nominal rate of 23 lbs.
per square (1.1 kg.mt) over the entire surface.
Design and installation of the deck and/or substrate must result in the
roof draining freely and to outlets numerous enough and so located as to Surfacing
remove water promptly and completely. Areas where water ponds for Prior to application of GlasKap, cut the cap sheet into handleable lengths
more than 24 hours are unacceptable and are not eligible to receive a (12' -18' [3.66 m - 5.50 m]). Lay the material out on the roof and allow it to
JM Roofing Systems Guarantee. relax and flatten. To accommodate a full width sheet, apply a mopping of
Note: All general instructions contained in the current JM Commercial/ hot asphalt, approximately 20 °F (11°C) above the EVT, at a nominal rate of
Industrial Roofing Systems Manual should be considered part of this 23 Ibs. per square (1.1 kg/mz). (The higher temperature of asphalt
specification. maximizes the bonding of the cap sheet to the ply felts.) Then flop the cap
sheet into the hot asphalt. On subsequent courses, the cap sheet is
Flashings positioned upside down, directly over the sheet in the preceding course
Flashing details can be found in the "Bituminous Flashings" section of the such that the side lap area of the preceding sheet is exposed. Care should
JM Commercial/Industrial Roofing Systems Manual. be taken to maintain 2' (51 mm) side laps and 6" (152 mm) end laps.
Asphalt is applied in the same manner as before, making sure to also
Application cover the 2" (51 mm) exposed side lap. Asphalt may also be applied to the
Over wood board decks, one ply of sheathing paper must be used under exposed "upside down" cap sheet prior to "flopping" it into the hot
the base felt and on top of the wood board deck. asphalt. The cap sheet must be firmly and uniformly set, without voids,
into 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 roof incline. Asphalt
On slopes overt' per foot (83.3 mm/m), refer to Paragraph 6.11 of this Asphalt should meet the requirements of ASTM D 312.
section for special requirements.
JM Guarantees require the use of Trumbull asphalt or another JM
Using GlasBase Plus, PermaPly 28 or Ventsulation, start with Approved Asphalt. The Contractor must provide an Asphalt Confirmation
a 12" (305 mm) width (a specific base sheet may be a condition of Number (ACN) on projects which require a JM Guarantee. The ACN will
Guarantee). The following base sheet courses are to be applied full indicate that the asphalt was registered with the approved asphalt
width, lapping the preceding felt 2" (51 mm) on the side laps and 4" source.
(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 approx- Check with a JM Technical Services Specialist for special asphalt
imately 11" (279 mm) apart, with the nails staggered on approximately requirements in hot climates.
18" (457 mm) centers. Use nails or fasteners appropriate to the type of
deck with 1" (25 mm) minimum diameter caps. For additional fastener
For an identical copy of this specification, ask for RS -2049.
6-28
•
Jul � p ckum
Johns Manville PermaPly® 28
Description
PermaPly 28 is a light weight, asphalt- coated, fiber glass base felt.
It is manufactured by coating a Johns Manville 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. Firma 7
Use ` -- -
PermaPly 28 is designed for use as the first or base ply in built -up
and modified bitumen roof assemblies. It is ideal for applications A
where mechanical attachment of the membrane to the roof sub-
strate 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 PermaPly 28 has been evaluated and approved for use in a variety
Material meets the requirements of ASTM D 4601, Type 11. of fire -rated constructions and is classified by Underwriters
Breaking Strength (min.) Ibf /in. (kN /m) Laboratories, Inc. as a Type G -2 Coated Base Sheet and by Factory
Longitudinal and Transverse 44.0 (7.7) Mutual Research Corporation for use in approved FM construc
Moisture at Time of Manufacture (max.) 1.0% tions. Consult the current UL Roofing Materials and Systems
Mass of Desaturated Glass Felt (min.) Directory and the FM Approval Guide for specific constructions.
lbs. /100 ft (g/m 1.7 (83)
Surfacing and Stabilizer (max.) 65% Sizes
Asphalt (min.) lbs. /100 ft (g/m 7.0 (342) Roll size 3 squares (27.9 m
Ash (Glass Mat Only) 70 -88% Roll length 108' (32.9 m)
Roll width 36' (0.92 m)
Refer to the Material Safety Data Sheet and Product Label prior
to using this product.
RS -2016 6.03 (Replaces 8 -01)
21 , 7 Products
Johns Manville GIasPIy® IV
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 sticking in the rolls 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 SPfy'
GlasPly IV is intended for use as an integral part of any built -up or •—..
modified bitumen roofing system, over nailable and non - nailable
roof decks and over approved types of roof insulation. When
•
installed over nailable decks, a fiber glass base sheet, such as y "
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"
is not necessary, but use of a squeegee on GlasPly IV after laying • Controlled porosity allows the product to readily accept hot
in hot asphalt will help ensure full contact is made with the asphalt and disperse it throughout the entire felt and to stabilize
asphalt. the 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 GlasPly IV is classified by Underwriters Laboratories as a Type G -1
Material meets the requirements of ASTM D 2178, Type W. Coated Ply Sheet. See the UL Roofing Materials and Systems
Directory for acceptable Class A, B or C roof constructions
Breaking Strength (min.) Ibf /in. (kN /m) employing GlasPly IV. Factory Mutual has approved the use of this
Longitudinal (With the Fiber Grain) 44.0 (7.7) product in numerous constructions. Refer to the current edition of
Transverse (Across the Fiber Grain) 44.0 (7.7) the FM Approval Guide for details.
Net Dry Mass of Asphalt- impregnated
Glass Felt (min.) IbsJ100 ft (g/m2) Sizes
Average of All Rolls 7.0 (342) Roll size 5 squares (46.5 m')
Individual Rolls 6.0 (293) Roll length 180' (54.9 m)
Moisture at Time of Manufacture (max.) 1.0% Roll width 36° (0.92 m)
Mass of Desaturated Glass Felt (min.)
lbs. /100 ft (g/m 1.7 (83)
Bituminous Saturant (Asphalt) [min.]
lbs. /100 ft' (g/m 3.0 (146)
Ash 70 -88%
Parting Agent and Stabilizer (max.)
lbs. /100 ft (g/m 8.2 (400)
Refer to the Material Safety Data Sheet and Product Label prior
to using this product.
RS -2073 6 -03 (Replaces 8.01)
.
J LM Products
Johns Manville GlasKap®
Description
GlasKap is a mineral surfaced, asphalt coated, fiber glass cap
sheet for use in hot applied built -up roofing systems. It is composed'f;
of a Johns Manville 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 built -up
roofing systems. The ceramic - coated granule surfaced sheet %W W1
provides protection to the underlying asphalt and membrane, as
well as the benefit of a reflective surface when white granules are ,, r•�,`i �,
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
• When white granules are requested, the reflective surface can
provide energy savings
• 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 as a Type G -2
Material meets the requirements of ASTM D 3909. Coated Cap Sheet. See the UL Roofing Materials and Systems
Average Mass Per Roll, Exclusive of Wrapping and Directory for acceptable Class A, B or C roof constructions
employing GlasKap. Factory Mutual has approved the use of this
Packaging Material (min.): lb (kg) product in numerous constructions. Refer to the current edition of
No Selvage 69.0 (31.3) the FM Approval Guide for details.
2 in. (51 mm) Selvage 68.0 (30.8)
4 in. (102 mm) Selvage 70.0 (31.8) Sizes
Mass Per Unit Area of Granule Surfaced Sheet Roll size 1 square (9.29 m
(min.) lbs. /100 ft (g/m 63.2 (3085) Roll weight 72 lbs. (32.7 kg)
Mass Per Unit Area of Desaturated Glass Felt Roll length 36' (11 m)
(min.) lbs. /100 ftz (g/m 1.7 (83) Roll width 36° (0.92 m)
Mass Per Unit Area of Mineral Matter Passing
a 0.132 in. (3.35 mm) (No. 6) Sieve and
Retained on a 212 pm (No. 70) Sieve (min.)
lbs. /100 ft (g/m 24.0 (1172)
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.) 1.0%
Refer to the Material Safety Data Sheet and Product Label prior
to using this product. For an identical copy of this data sheet ask
for RS -2019.