Document MG0DB7v2gYZxZbyx3ngMkYKBa

FILE NAME: Sprayed Asbestos (SPRA) DATE: 1934-1973 DOC#: SPRA042 DOCUMENT DESCRIPTION: Excerpts from Trade Journal [ASBESTOS] Date ROUTING AND TRANSMITTAL SLIP TO: b(Nuaildmineg, .oAffigceenscyym/Pboosl,t)room number, i. - 3 & A \ ajl l'j Date 3. 4. 8. Action Approval As Requested Circulate Comment Coordination REMARKS ik fy File For Clearance For Correction % For Your Information Investigate Justify , M fr r y r . /jy k J u J tZ ? . Note and Return Per Conversation Prepare Reply See Me Signature J lA y llA jL , tv l w w * ^ ' M ; M urM n M .A jy > L a * * DO NOT use this form as a RECORD of approvals, concurrences, disposals, clearances, and similar actions FROM: (Name, org. symbol, Agency/Post) Room No.-- Bldg. y V u <L Phone No. '/ b i - h i r u M h z o ~Z.~G 133 ' </ 5041-102 OPTIONAL FORM 41 (Re U S . G O V E R N M E N T P R IN T IN G O F F IC E 1 9 7 9 ---- 3 1 1 - 1 5 6 / 2 1 Prescribed by GSA FPMR (41 CFR) 101-11.?'' Asbestos, November 1934, p< 13 "British Employ Asbestos ^ ^ ^ g p y f y e d ' w i t h a special TM j i s ,s s r s u for the walls, roof and floor. . -- Asbestos, September 1936, p. 12-13 tion S " d - type of surface, large or small, Y P Y 9 i s known as surfact. Manufactured by Keasbey & Mattison Co. Asbestos, February 1937, p. 38 Trademark, Protokote-U.S . Gypsum Co Asbestos Fibre Coating. Asbestos-, March 1948 p. 44 ^ patents Spray Gun and .Method of IprSo-na^Co!? Arthur J * ^mpe, ' f1^ . 9a divided material and Chicago, 111. In tne ar; ,p, yrendered adherent for appliadhesive whereby the material is rendered aun* cation to selected surfaces. Asbestos, September 1948, p. 9 Ad for K & M APAC; also Sprayed "Limpet" Asbestos, Keasbey & Mattison, Ambler, PA. Asbestos, December 1948, p. 7 3 patents concerning sprayed asbestos. Asbestos, July 1950, p. 26 "James L. Kempthorne Reports on the Hiroshima Assign ment." Kempthorne, President of Sprayed Insulation Inc. was on assignment in Hiroshima to instruct workers in the appli cation of sprayed insulation to buildings being erected by the Atomic Casualty Commission. His product, Spraykote, is a combination of asbestos and rock wool used for acoustical treatment and sound deadening. Spraykote was used principally because it would withstand better than plaster the almost daily tremors of earthquakes in that region. Asbestos, October 1950, p. 50 Textolite: U.S. Gypsum for exterior treatment of brick, cement block, stucco and concrete: an oil resin paint. Asbestos, November 1950, pp. 12-13 Sprayed-on Materials (Building Research Summary Report 72 issued by the National Bureau of Standards on Acoustic Materials) [See Xerox]. Asbestos, May 1951, p. 48 Trademark, Fibrespray Asbestos Acoustic Inc. Philadelphia, Pa. Dec. 15, 1949. For asbestos fibre and binder for spraying m place as thermal insulation and sound absorber. Asbestos, February 1952, p. 36 "Folder on Spray Craft Fibre Insulation Available." Jame L. Kempthorne, President of Asbestos Fibres, Inc. has recently issued a 4 page folder on his Spraycraft, an industrial fibre - 2- insulation made by Sprayed Insulation, Inc. Asbestos Fibres, Inc., is a wholly owned subsidiary of Sprayed Insulation, Inc. which processes a proper type of fibre for Spraycraft. After years of development, Spraycraft is now ready for hard side wall application in any color. There is to be a national convention in Newark in the Fall, at which time an entire.new line of products all applied by the spraygun method will be introduced. Asbestos, June 1953, p. 26 Smith & Kanzler Corp., Linden, N.J. have added a "Spraybest" division for spray-gun applied asbestos fibre for fireproofing, insulation, condensation control and noise insulation. W.A. Burnham, associated with the development and improve ment of gun-applied fibers, has been appointed general manager. Asbestos, February 1954, p. 6 Keasbey & Mattison Co. -- History. In 1936, K & M introduced Sprayed "Limpet" Asbestos Acoustical material . . . The first asbestos acoustical product in this country. It differs widely from other noise killing materials in that it is sprayed from a gun like paint. Asbestos, December 1956, p. 18 A unique method of fireproofing structural steel members and steel floor units in building construction was recently tested and rated by the Underwriter's Laboratories, Inc. In addition to protection from fire, this method presents an entirely new concept for the protection of structural steel members against corrosion. This fireproof medium known as Sprayed "Limpet" Asbestos is distributed throughout the U.S. by Keasley & Mattison Co., Amber, Pa. Asbestos, June 1957, p. 60 Patent Coating Wet Metal Surfaces with Asphalt Cutback Com position. Granted May 2, 1957 to C. E. Wilkinson; assignor to the Texas Co., N.Y. A plastic composition suitable for application to wet metal surfaces comprises a vehicle such as air blown asphalt, a thinner, tall oil, aluminum powder, and a filler such as asbestos - 3- fibre. A slurry of the material is sprayed or brushed on to the surface and the thinner evaporated, therby forming a permanent, adherent protective coating in the metal surface. Asbestos, January 1958, p. 37 Ad for Smith and Kanzler Corp. Plaster, Linden, N.J. Spraycraft Fireproof Acoustic Asbestos, September 1959, p. 12-14 See xerox "Sprayed Asbestos" Asbestos, October 1959, p. 16 Asbestos has recently received from Asbestospray Corporation pamphlets describing their "Asbestospray Insulation." Asbestospray Corp., 300 Thomas Street, Newark 5, NvJ. - ' Asbestos, November 1959, p.8 Smith & Kanzler Corporation, manufacturers of one of the leading sprayed--on asbestos insulations has published two brochures on its product "Spray Craft" a superior non--conbustible thermal and Acoustical insulating material for decorative and industrial applications. Along with a description of "Spray Craft" and its uses, the brochures contain tables and illustrations. Smith & Kanzler Corporation, 1414 East Linden Avenue, Linden, N.J. Asbestos, July 1960, p. 28 A 12 page catalogue giving the advantages and uses of Sprayed Limpet Asbestos has just been released by Atlas Asbestos Company Limited, 5600 Hochelaga St., Montreal, P.Q., Canada. Asbestos, November 1960, p. 26 Turners Asbestos Cement Company Limited of Trafford Park, Manchester 17, England, has recently released a 14 page 11" x 8 1/2" brochure entitled "Sprayed Limpet Asbestos-Heat & Sound Insulation." Asbestos, January 1961, p. 52 Keasbey & Mattison Co. has published a four page folder describing its Sprayed Linpet Asbestos spray shaped coatings. - 4- The folder lists the fire resistance approvals that have been gained from UL, Nat'l Bureau of Standards, and their counter parts in Great Britain & Canada. Asbestos, March 1961, p. 26 Smith & Kanzler Corp. published 2 interesting brochures covering the use of SprayCraft. One deals with fireproofing applications, fire resistive ratings, specifications. The other with use of SprayCraft for acoustical and thermal insulation applications. Asbestos, January 1962. p. 28 Sprayed Limpet Asbestos described as the modern sprayed on material in Keasbey & Mathson Company's new 4-page Sweets Catalogue insert 10 a/ke. Literature includes specification guide and detailed results of testing-by fire and standards laboratories. Attractive front cover illustrates well known and architecturally iirportant structures in which Limpet has recently been used. Asbestos, November 1963, p. 24 pyrospray, a fireproofing, spray-on asbestos and mineral fiber material manufactured by Baldwin-Ehret-Hill Inc., has recently undergone new tests by U.L. Inc which certify its improved fire resistance. It adheres securely, following the contours of the surface to which it is applied, as it is discharged directly from the spray gun nozzle. Pyrospray has excellent thermal insulating properties and high acoustical efficiency. Asbestos, November 1964, p. 4 Smith & Kanzler Co. announced the signing of a licensing agreement on "SprayCraft" asbestos mineral fibre with Nippon Asbestos. Nippon Asbestos will able to manufacture Spray Craft fireproofing and acoustical material as well as SprayCraft spraying machines for sale in Japan, Okinawa, Korea, Formosa, Hong Kong and the Philippines. SprayCraft was used in the Pan Am Building and Chemical Bank N.Y. Trust Building in N. Y. City. Asbestos, March 1965, pp. 2-8 "The Growing Application of Asbestos in Industry," By W.E. Sinclair, Consulting Engineer to Putten's Asbestos Corp. - 5- P. 8- Spraying asbestos fibres directly on to a structure or on fabric is becoming common practice to ensure soundproof rooms. Certain applications are employed to combat condensation and to provide thermal insulation. Spraying, besides being a means of fireproofing the structure, also corrects acoustic effects and reduces noise. _ Asbestos, May 1965, p. 20 Asbestospray Corp. insulation. Components (mixture of virgin African asbestos and inorganic heat--resistent binders) are combined by a controlled blending process which assures product uniformity and optimum consistency for spray application. Asbestos, May 1965, p. 49 Ad - SprayCraft: Sprayed Asbestos Mineral Fiber by Smith & Kanzler Co., 1414 Linden Ave., Linden, N.J._ 201-925-2100. ' " Asbestos, September 1965, p. 24 Smith & Kanzler Company, Linden, N.J has indicated that a licensing possibility exists with them in many countries through out the world on SprayCraft sprayed asbestos mineral fiber. . S & K presently has licenses with Nippon Asbestos Co., Ltd (Japan) and Bradford Insulation (S.A.) Ltd. (Australia). The licensing includes the use of the company's trade name "SprayCraft" and also covers the manufacture of the special SprayCraft spraying machines which are the most advanced design in the industry. p. 36, Sprayed Insulations Limited "Silbestos" Sprayed asbestos process. Asbestos, January 1966, p. 26 B-E-H Mono-Spray. Monolithic Thermal insulation by BaldwinEhret-Hill, Inc. Mono-Spray is a combination of asbestos and spun mineral wool fibers with an organic binder plus rust inhibitors and provides for fast, economic application by spraying it on turbines, ducts vessels and other large surface area. Asbestos, September 1966, p. 6-8 From article by C.Z. Carroll Porczyniski, "British Asbestos Industry." See Zerox "Sprayed Asbestos". - 6- Asbestos, September 1966, p. 16 Foster Spray Instructions. All Foster products adaptable to spray application are being shipped with complete spray instructions. Instructions indicate the necessary equipment, use of application equipment, how to spray. Benjamin Foster Co., Ambler, Pa. Division of Amchem Products, Inc., Ambler, Pa. Asbestos, November 1966, p. 12 Sprayed Mineral Fiber Manufacturers Association (SMFMA), P.0. 427, Westfield, N.J. 07050, New York, N.Y. has been formed for the primary purpose of providing data on the latest materials and techniques in the fields of fireproofing, thermal insulation and sound control. It was brought into existence by 4 major producers of sprayed mineral fiber: Asbestos Corp. Baldwin-Ehret-Hill Inc. - Smith & Kanzler Co. U.S. Mineral Products Co. president: James P. Verhalen (U.S. Mineral Products), Vice President: A . E . Binger (SScK) Treasurer: J.H. Wittkop (B-E-H) Promotion Committee Chairman: John Boland (B-E-H) Technical Committee Chairman: Morris Leiff (SScK) Asbestos, January 1967, p. 4 SMFMA - One step application of sprayed mineral fireproofing In manufacture, virgin asbestos and mineral wool fibers are blended with the binder as a dry mix. The material is applied with a spraygun, at its nozzle, combines air and water with the mix to form a homogenous mat of contact fireproofing. Asbestos, September 1968, p. 36 Sprayed Mineral Fiber Booklet. Description, uses, and properties of sprayed mineral fiber are covered in a new booklet "Fireproofing . . . Insulate . . . Control Sound," published by the Sprayed Mineral Fiber Manufacturers Association. The publication is the first ever issued on the product generically. The material is suitable for buildings of all occupancies. Fire-retardant ratings meet all codes and standards Asbestos, June 1969, p. 12 Armstrong Armaspray 16 - High thermal efficiency. High temperature spray-on insulation. Product of Armstrong Cork -7- conpany. The new insulation is a blend of asbestos fibers, ^ mineral wool fibers and inorganic binders. It is processed at the job site, from fifty-pound bales of compressed dry material through a special Armspray Spraying Machine. It is danpened in mid-air by atomized water as it leaves the spray gun. Fire protection, noise reduction, and corrosion prevention for indoors or outdoors. Asbestos, January 1973, p. 38 U.S. Consumption in 1971 25% Asbestos--Cement (A--C) pipe and building products 18% Floor tile 14% Felts & Papers 10% Friction materials 3% Packing & Gaskets 3% Textiles 2% Sprayed Insulation __ _ 25% Miscellaneous Products ' " Asbestos, March 1973, p. 12 "Pre-Dampened Silbestos Spray". See Xerox. -8 - INCIDENT In in\ imiyhborhond, a small c o u n t r y villam*. lives woman w hi,-i ir i. ii nt 's an*, for the most part, residents < 1i n l a n d A mnnth or so a<r<> two of her sistors anil a niece. cl cided to roim* over to \ isit hoi', Tliev decided to com,. P plane to New d ork. The woman (Wove to l,a( Inarom Kiel to meet them, hnt when the piano on which time were e \ petted arrived, they were not on it. Imit!ieiworried, tl'.e woman telephoned to I r< land, ha, a pleasant eh it wit!; them and othm relatives, and was too that the\ had to aive up their rese> \ at ions on that part mihir plane whieh was scheduled for a Monday, h it tin they would a'Tin* on W'ed.nesduv ui Thui's.l,! v. Noise them v ,, s i ie11. j list `comfortably P \ r d " ;,s \e.- ,oni!l! 1'eo I,!e s p . The nieidmtt is not I'etnarkalile m its,-'!'-- j or h- . io hut lire,Is of similar ones neenr every month. The oittvtandnm pert ot' it is its o r ualness. Twent y \ e e r s a cm /o. <hk would him* thought ot f p iny from Du hhn to New York, or if tlie\ had it womhl h a \ e heen with fear and tiepidation. (Yrtaiuly women would rot lm\e attempted such a trip. Nor would they have neen able to telephone. When ordinary country people, not especially accus tomed to travel, take a plane trip from Ireland to tin country as a matter of eorrse. just ;o ve would take t n mi rOo Philadelphia <a matter of l.s miles, air tram has d e 1!tutely a,reived. Who knows: we may all emu he t a k u m vae at ii u t r i p ' , or e wm weekeiid one-,, t o 1he moon 1 Prirate firms may send invest irrators to German,' undei e c u .o n conditions These conditions an* described in 1lie Se Iit el,11,e , pl t o p ; P,,I, S, j.uh 11Shed Ip the ( W I)| part metll of ('omniel'ee. Flirtller ill formation ( an in* obtained l mm Robert Reiss. Phief. T i l l * Depart UK lit of Co In 11le lee. Wash im_r1o 11 do. I) ( '. I'tlr/l' ! 1.'/;/> To.'" - - O- t`,hr, I'' SPRAY INSULATION OF CORRUGATED ASBESTOS CEMENT .--i a -a- Architect* and builders today am at a eros-madx.'y They am faced with the choice on the one hand of tlsing conventional building materials in conventional fa^hio'i^T-- if t hey can yet them and if, af t er h av i ng gotten tlteni. they',1.' | can afford to use them. On the other hand, architects and builders h a w the alternative of engine er ing new e o mh i n a - ' 1 * tions of available materials. Such combinations which are more economical and ' which do a better job are often only waiting to be exploit- lab Kxnl oi t at mn is not so easy as it sounds, for it is much Ay . l asier to follow in someone rise's footsteps in selecting a ,7 tvpe of building construction t h a n it is to push t h r u a new idea. There are the building codes to be changed, the a r c hi tects to be shown, and the bmldeVs to be made aepuaintecl with the advantages and limitations involved in installa tion. A_recent development along these lines is the appliea- tion of asbestos fibre by spr ay Oil to Cdrrugaled asbesios- cenient wall and roof "sfrTH'l ni'cy fui ITe p u rp os e of t he rma l w- insulation The advantages offered liy~coiTUgated asbestos. cement boar d are well k n own--ease of erection, per num- ' v cnee, etc.,-- butithe insulation of this material with conven--. 1 | tional insulating board presents the great problem of air : 1leakage thru joints and application holes. .dU.-d Scarcity of conventional insulating board has given' the m a n uf a ct u r er s of ~' 1'dbr e sp r ay Asbestos the op*, f ' 1 p or t mu tj to p r o w what tlow had long k n o w n-- t hat. t l n w 'T A application of s p r a w d asbestos fibre to c o rr ug a t ed ' as-"'',, bestos-c<1men) board would g i w a const r uct i on t h a t was incombustible, tight, economical and fireproof, Sewral one-story .manufacturing buildings injtbe'. I'hiladrlpliia area liave been built using F i b r e s p n t y insula- , - tloo on eo ri ona o. d iniTM t w w o ' -ide wells The s]),icc 1 bfiiwoi! the class block windows and the msii l a t m l. i-oof y., f appmvimatel \ a feet i consists of c o rr ug at ed asbestos-ce- 1MWI board with Kihrcsprav insulation, (-'or thesd build- i w ,,, ! /'we .i digs Fibrespray 1-Tt" on the crest and 2-Ti" on the trough and weighing approximately 3 pounds per square foot was used. This added to the. corrugated asbestos-cement board, weighing 4.2 pounds per square foot, makes a combined weight of 7.2 pounds per square foot. The K factor1, or conductivity of Fihresprav, being 0.31, and the 3.8" corru gated hoard 12.5, the combination was equivalent in insula tion value to a 13" masonry wall, complete with furring and plaster. In one building the Fibrespray insulation was painted, and in the other, it was left in its natural color. Being completely flexible in its application and treat ment. the thickness of Fibrespray can be custom tailored to the job to meet its particular need. Its monolithic construc tion a llo w s no open joints for air circulation. Expansioi and contraction of the coated surface has no cracking, peel ing. or other destructive effect. . Fibrespray applied to ceilings or walls acts as a barrier i against flames in addition to possessing its insulation and I acoustical properties. This should prove to be a definite l safety measure and insurance economy. The application of Fibrespray is made^by men thoroly trained for this type of work, using machines developed for this particular purpose. Great care has been given to the selection of fibre grades and the binder which is incor porated at the factory. The processed fibre passes down the machine hopper thru a fan which " fluffs up" the fibre and sends it thru a hose. At the point of discharge i' f is met by a liquid spray which combines with the openec I fibres in the air, so that they are datnpened just as the' I strike the surface to which they are applied. Thru a combination of spraying and tamping, the ma- 1 terial is built up in layers until the desired thickness has been reached when the surface is leveled and textured. The finished surface has a pleasing appearance which may be left in its natural light color, or painted if higher light re flection is desired. The added value of sound reduction by this treatment is attractive to those w ho realize that re- C o efficient ^pressed in B T l' p er hour p e r aq'i ft. p e r d e g re e F. p e r 1" th ic k n e ss. .... '*' - 11 I'lll/f i "A t t B E f i T o x r -- Ot t o b e r j ' J , 1if ? thK-tion of noise in the factory is just as desirable in pro. gjinoting the efficiency of industrial workers as noise re Sj (iuction in the busy office is considered a vital ^mist by |1 far-sighted employers. Where Fibrespray insulation is subject to physieaFnn- 'pact, it can either he covered by plain asbestos hoard, wire v; lath and plaster, mastic coating:, or special harderftng of J--1 - - ,,vv ^ flic sprayed asbestos itself. The acoustical value is natural- - ?**' 'ly lost where the material is covered up, but the harden .... ,.ing process of the fibre itself reduces but does not eliminate ^r''Ac'T.`A - Jbits acoustical value. This is accomplished by the addition of |?a special binder to improve body and surface strength.. ;. TY i 4' This method of insulation forms a felted blanket of A interlocking asbestos fibres which seals the entire surface f teovered. If desired, structural members may be covered ' / jr^also. Particular attention must be given to method of ;!jl ,\b, ./- | sprayed insulation at the points of contact with structural and supporting members in order to secure maximum in- fci- V *sulating efficiency. ...4. -< At the present time conservative builders are-tiirning corrugated asbestos-cement board only substitute. They feel that somehow its appearance is correct land that a& soon as other materials, at present in short; 'supply, become available, they will revert to these. It is en-| itirely likely, however, that these prejudices against a p -j^ pearanee will he strongly modified as time goes on. Actual / / 'experience with such construction, furnishing proof of it s ^ ! durability and efficiency should sell builders on the id e a / ' of giving a combination of corrugated asbestos-cement and F Fibrespray insulation a lasting position in the field of per il manent buildings. ` :V' T Expense is a vital factor in all business construction,; ... y[ The building must not only do the job assigned to it; .it ' must earn money while doing so. A high, first cost is quite; handicap in the form of interest and amortization charges. This is especially true if no more than fivedo tenj years of very profitable business are in sight.y. Vote: " F ib re sp ra y " a sb e s to s is m ade and j b 'k r u n u c a p f Acoustics, Inc. F u rth e r inform ation can be bad by ad d re ssin g them at C om m ercial T ru st B uilding, P h ilad elp h ia, 2, P a,H !V' "ASBESTOS''-- October /ft} ' W tf'die, S i -k`tt surface where they are deposited. In some eas. fI . solubility of an in<rredient is hiph enotifrh so that -he impervious film of solids completely closes the s pores after the plaster has dried. Kxcept at ver.v b,v. fre<|tiencies. where diaphrayniatie absorption occurs, sm-, plasters exhibit low absorbing power because the mcannot penetrate thru the ylazcd-over surface into it,, inner pores and voids. Acoustic plasters with a pmpe ii s , '\ toward ylaziny reipiire stippliny when partially dr.v r improve their sound absorbiup- [lower. In ireneral. acoustic plasters may be steel t r o u l ed . ; cork, shiuyle. or mohair floated to iirodnee various sin face textures. Tin* troweling or floating must be doi m the proper time after applieation. Tin- t.me int ,, specified by the manufacturer has heen determined o basis of numerous elaborate sound absorption tests o' fiplaster and should lie adhered to closely. J'rema. ,i. froweline. or over-troweliiur, may briny the finely pu verized plasticizing ingredients i tin- so-called " f a t " t" the surface. An accumulation of " f a t " tends to ehm- ow the stirfaee pores with an effect on sound absorption similar to that of yhiziny discussed above. Trnwelmu or floatiny too late may leave trowel marks and an uneven surface texture. Sprinjitl-nn Materials. ` i A number of fibrous materials, notably a sb e sto s and mineral wool, are applied on the job by sprayiny ' shredded fibre together with a suitable binder dim. on tin* surfaces to be acoustically treated. After spra.v i the material is rolled or tamped to a smooth surta Spra.\ od-on materials can have comparatively hiyli ~oim i ahsoi-binp powers, depending on then- porosity and t h i c k ness. The chief disadvantage of sprayed-on materials i- their st met lira 1 weakness when applied too jooselv or when i11sut'/ioK-i11 binder is mixed with the.shredded fibre duriny sprayiny If insut'licieiit binder is employed, shed- diner ot the fibre iiui.v take place because of vibration the wall surfaces to which the material is applied Obviously, sheddinc of materials contamiuy mineral wo.I I ! ' i s ! t ? ' S T f ) S " --i Vo r e i hr) We want %K. OUR you to NEW have a copy CATALOG iV~ - .,;V.*.. ' ?..;VA ^-pSsi '-A, - V V 7 * /"M of 'V * '-- -1 ii? < *V `^A ` '^5'oVSX ,V' \ t , \ f, . . 8 pages packed with illustrations and useful n 'VVVV- !'Vi ..yijj Packings, Gaskets and Textile products. Write today i$for Form No. 48-1023. * 45* UNION ASBESTOS & RUBBER COM PANY r|Y' ; ^ |v 7 //ro j l \-oJ/u /f 1821 South 54th A venue, C icero 5 0 , Illinois A ? AMOSI TE FIBER YARNS -A PACKI NGS GASKETS t UNIBESTOS HIGH-TEMPERATURE *'As/; I ' s T d S ' 4 - X ovcin her lH'tO *- PIPE FABRICS'] ' ; ~ ;`* L A T I O N S j ../ ' X,-1 t . . S?' JW*5 .* I N S U l AT I O N . .. 1, BLOCCKKA, gt-'*.?y: i-jg * l , I J , -.0 J1 - -r ') S> . 1 k - . - v ''' i.s , ! ,r'; ^ ,."> v can lie very annoying to individuals confined to rooms "'here such <dieddin<r takes place. Excessive ' h e ^ y i n ^ may be prevented by addition of the requisite aniom*C, binder diirine sprayin'!', or by sizin'!' or paintin<r finished surface, lnasiinieh as snraved-oii matepiaU flipa. relatively. soft. th_ey are not adapted for qse in loeatim.^ Tike eyiuiiasimns. or hospitals for the insane, .where 7b`'~ may he accidentally denteil bv a thrown La11 orsoiiTedt lien in1nsiu\ _ Yet it is this very structural weakness of sprayed-un materials which results in an acoustic material with v e n unusual cliaracteristics from the standpoint of redecora tion. t k-casionally weak but exceptionally resilient materials are encountered which can be painted repeated!' until their surface pores are completely closed ivithou- marked diminution of their sound absorbin'.!' power.'^f-Vs fact siicb materials may acquire a l di t km a l absorb power, especially at low frequencies, al t er repeated pairrf - 111!!. ,1( ou st ic H dffh.s . \ 5 ;' It often happens that a room with larce wi nd ou areas has insufficient wall area for application of acoustic: material to obtain the required reverberation time. In such instances, recourse is made to " acoustic baffles", i. e. sound absorbent structures which are placed a w a y from the walls where they will not interfere with li'ditinLr from windows. Matties are also used to isolate individual machines. 'When placed around a machine so as partially to enclose it. baffles absorb sound fit the source before )t, lias fin opportunity to sprca 1 to regions in a room;w h e n ' it is desired to maintain a lower sound level. To . be effeetive, baffles must he very hiyhlyl soiimi absorbent; this is achieved by the Use of thick layers d to (i inches) of porous materials. Fibrous ma te ri al ' like mineral 'cool or jdass wool, encased within perforated ; metal or perforated asbestos board eoverinjis, fire often Used for baffle purposes. Matties may also be constructed of lujrlily porous nmsonr\ expecially developed for the purpose. ' - d Hue of the more interestin'!' applications ofjlmltlcs ?!</(' J J m "A S l t K S T O s " - .V om i/ her **f: CORPORATION *f-!..*t\T 'i ' M anufacturers A sbestos-C em ent Building Products. ; c ]^ k --i#?5pp|s$;j':.. RiS jk * *, > V -* Z'3kfi%L ..., t' 1 ; CORRUGATED SHEETS n** f l a t SHEETS . , %`f <' ^ RO O FING SHINGLES ; ' ; H SIDING SHINGLES .. 'g,;.'"SSg'K'mkl-. 4`A - '>' *- - -,;i- [..' - i ' i - F actory an d Sales O ilice 5300 TCHOUPITOULAS STREET] NEW ORLEANS 15, LA. A Jt- --'". - f t "`.4 v/;/;>,yy,lS'** __ .Vo/`<ui h vr fih'ift SVk'"^'-'5 \'^v ,'X$ * X V <#* ` ^ SPRAYED ASBESTOS Tlu> spra> mg of asbestos fibres directly onto a s t r u c ture (>! building fabrics is a process with gr eat p o t e n t i a l i ties It puts all the advantages of wet construction into diy buildings a nd is widely used to combat condensation, p r o vide thermal insulation, give fire resistance, exclude dust, a nd in some types of building, to correct aecoustical effects. Sprayed asbestos is well-suited for insulating all classes of industrial and domestic buildings. At the same time it solves the problem of increasing t her mal resistance of existing buildings, hi addition, the treatment provides proof against vermin. By this method, which is called sprayed " L i m p e t ", specially treated asbestos fibres are projected simultan eously with a fine water spray from a multi-iet snrav gim Various grades of asbestos fibres are used m order to nu <t certain essential functions. The resul t ant mixture is pliable for two hours, dur ing which time the surface can I" flattened or shaped It becomes set in about eight hour'. The advantages of spraxed asbestos are as follow' 7 h r ri i ui l L u^ n l a t i o n With a 'ingle shin roof, savings in fuel consumption of 50W ha\e been aehicxed Buildings insulated in thi' way can be kept, if required, at a lover temperature and still provide the same degree of comfort. In summer, the t r e at m e n t will reduce the a m o u n t of solar heat coming t hr ough the roof and so makes 11101c comfortable working conditions. A ijti-Condntsnfinn ' Condensation is prevent ed by m a i n t a i ni n g the s ur fa c concerned about dew point. The applical ions are capable of absorbing many times their weight and this is latm evaporated when average1 conditions are re-established. Sprayed asbestos prevents condensation on exposed steelwork and the tendency to rust or corrode is greatC reduced. Fire l '.n,t(<hnu 'Flic s\ si cm complies with the requirements of the Fii<' Research Station fire tests Data is available which shows I'agr n A S B H S ' r O S " -- S e p tr m her 1`tS*? CANADIAN ASBESTOS THE NICOLET A SBESTO S MINE NQuofcrbestos (via W arw ick) - Address Inquiries to: ? NICOLET INDUSTRIES, INC. | j ASBESTOS FIBRE DIVISION : Nicolet A venue ^ : |v Florham P a r k 5*5, N ew j e r s e y , 'S u burb of N ew Y o rk City. A, "A.S7if;.N7'0,N" -- Xeplembi'i' W~>!l Ptiye l.i (In1 cwii'i decrees o) 11re i cms'k.ik e \\ !icn a p p h e d ,<` l-imerete floors, '!('.) beams and columns A a 11-( 'i/i rnvto/t Id Ms have been made attains! the corrosion of sp ! w lui-h h,i\a' p n n e d its xaitto as a piutei I n c ament /)nII r i l Ill wolf My ijmi\ ic]in p. an unbroken and rt nsnnahK tlexnbh internal line, the sprayed " L i m p e t " s e a l s all the l a p s ami joints In that warn it effectively stops dust and chit eonn iiier ihroturit root's, and. occasional!!, walls. S nuiiil Ahsor/il inn As it ran he applied directly to a11 types of roofiny and walls reuardless oh the surtaeo contour. P is ideal Ln the real it i Lon nl' noise /it;in at ina All applications will take decoration in the same wa as ashrstos cement t o s is carried out by TTTjTord Mark. Man i V ^ a . n n e . ted will' the ,lppll< a< ......... . ............. v X g C `-S-^ i s s u e , / v o t e s T L a f f i x . fncx-Kr-/ #.1 / s tz.ua i / a U C m fjnr-u, A m e rica . -firtn m h ZCeasAeu jr? .a s t> d r f t m b t e r , f a . s O / t . enset ; iC S H t a i S s b k / v ? (*.,1**, **A^ I! KS'f MS up <nl 1\ i t n i\ i i (j| in fi A u\ two \ o - inU'iVMiiii: <i)k1ln1on (111\ c ]i,i [si'v ' ` F ur flu r Oh si rvut in a ' fth th / M tjf j/h <>jmi tj II: ('In lUn'ilf mill I { 'tilt njrit < ' '. In }), iI(,JN Jilt dosf'ph d Comer and. " M nr phnhni mid ( 'r ihlul ( 'In mnf i i/ or l : f Lmu r nf /niltici S i h i i i l m b\ Thomas F Mates. " \ S [5K Sj '<!S " will lie triad to leie' 11x i 111lies to ml erest ed tea del s c a FKTY [.V d'lIL SI X TI Ids ", a forecast id' ilmnm to i dim in s,j i ct \ in the next 10 r e a l ' s will he the theme of the- rI fli \ ii! hi itaI Siil i I ii Cu nm t \ annua! colt \ en t an i ot the Vat Iona I s a ! e i \ < m i i n ii m m ' n i d ,i. t ' C , , . y , ! P i m " s ("Mobil 1" dd IbTi 'i'iioix will lie nearlv A I' I e xh d ot s o! ! s'/,' >7 n s " -- " I j l e i r b r i / '1 Since 1935 originators and world's largest exclusive manufacturers of Needled Fells for ASBESTOS CEMENT PRODUCTS Sidiiu Sheets Pipe Ashesltf< paper Millboards Balanced synthetic contents DRYCOR F E U 0. STAFFORD'VILLE (p n ^ 'V f'rT T tl r i\ ?J. S. A. find Armstrong ( 'ork . Company. Ferodo Limited i.s pm. diieiiisr 11< m 1i | > stairtt'ead.s..which are.extensively used ,by the bnildinsr industry, d.j:,.. .r , t, - y . u yL U . *>'**' I X S l 'L . i r L X G M A T E R I A L S Sprayed Asbistos d A- WSi -V* ' The technique of sprayimr asbestos to produce boatitms f y. y-i.y for heat and sound insulation, fire protection and the pre- `I ' V : 1, volition of eondeiisation was created m Britain in lifdl ny t. AY. Roberts Lonited. who secured world-wide patents , L'd .;- for their Spni.\ ed Limpet Asbestos pro-ess. (t has been continuously developed and improved with the result that -f ' .it'/is now known tbrouarhout the world. The aslx-stos fibre I'oid'c ' and tement mixture is applied as an airborne stream wi'h . y . ' i y : : / jets of atomi/ed water, the resulting co a t m- b`i i n - tLeh dwTl li-htly pressed back witli a float to tin* required! thickn&S `FsftdC- and .-density. It thereby provides' i-oatin-s whij li arc in , iihinuite and eontmuou.s ronta< t with the siiit^ee hein- "avid1' treated, follow in- all contours re-ardlcss of euinplexil \ - ,, ! and thus bein- c\treniely versatile. i .Recent examples of Sprayed Limpet A sbest iis a pplu a - /K tioris include the New York State, the le'lieral Kleetrie ` 'Company in l ` > A and the < - ne r;i I Alotofs f-'u111 r;j m.: buildin-s at the New York W o r l Fs Fair and the fireproot- in- of the ."c'-spiiv I'rudcnlial ('eiitre towei m Boston. 4f-,.~ - .Massuehuset ts. It was also appl nd for m-ai lat am an 1 .sound deadeninir lo the eeilin- of the (Ilympie diidn Sta- i: '-V, >V'r. '''v ,f ' .diutu, Tokyo Additions within the last year to the mand y 'hiMin liners insulated and fire protected In iln.s proei^S ' include the Italian ships. ".Mielielan-elo" and " Ratfachd'1 th the Ihone Lines "Uecanio" and the eiirnm;]\ bmldn.^ ; -Swedish America liner " Kun-sl i ol ni " New applieat mn$ r%l continue to be de\e|nped. a recent instance beiiiu in miniii-. lad ... i . - T ly F q nl la nU of asbestos fibres lui.s been put, to work d-ipy* hqhd'.wilh excellent results to control condensation in Wiuldinus ''?i as swimminjr pools and on the steel .shells of railwa> NhA '*arsi2K, Tby,V.<>(V. and sides <d' sin 11 .siiueuiies are eiillibii Kv> mitsidt* atmospheres and hy radiation to chair skies frH* testetsv/Their temperature is thus frcqiicntlv lowered helow the fy|- .SffT-" , ;T< 6 ................. r . A S B E S T O S -- S e p tem b e r 1966 '4di ' -s s i 't ' ' ^>`r;T5f1' # *$5 r. Limited Australian Blue is an ideal fibre for asbes tos cement and for purposes requiring good "heat insulation and acid resistance. It has & excellent spinning properties. Samples available on request. ! SOLE SELLING AGENTS Minerals Fibres Ltd., Third Floor, St. Vedaft House. C heepside. London, E, C 2. > A 'ge'-'a Be'g 'u'o, B,, ga-'a, C a '- 'H j D e " - 3 - r , Ft Kuwait,Lebanon.t ^ V:-;:--, Nge'3 Nc'^3., E'r6, F nla-d, G-$3* 8 '"a'n, G'^ece K ; ' -i i `ro- ' - n ' Pa W a n , Po'*ugal, R . - 1v a S c3 ' r', S ' - ? :' - : * *:n-' a' ,J, T . - . ' s - J u r V e v , Uganda, Ur 3, /*-)-- .V* Huxley Development Corporation, Time & Lite Building. ' New York. ' U n i t e d Stages or A rr3 r'c3 Y . r G . * In Aui tr<jl<d id J 'e 'i r'Qu>rii to -- A U i ) RAL1AN d l u c A b dc S TO S P I T . LTD 89 St, G e o rg e 's Terrace Perth, Western Australia A SB ESTO S -- Septem ber 1966 Page 7 dew point of the inside atmosphere ami condensation can result to a major extent. It' Limpet asbestos is applied to the interior surface, the amount of condensation i.s yi'caiKreduced and ste-h water as i.> formed within the insulation is withdrawn by w iekimr act ion to the exposed suil'nee and r'e\.iporatcd to atmosphere. (Led in this way, Limpet also is ducts to a minimum heat losses throimli the buc ture ami lowers the noise level within l>y absorption of sound waves. The worth o f Limpet asbestos is appreciated in the current modernization program of British Kail where it is fimliiiir ineieasintr Use hy designers of diesel, diesel-electric ami electric locomotives^. Jn these and in railway earld.iecs. Limpet Asbestos is frequeutlv applied between do u!de llo o is and on tlic underside ot steel or 1i>_r111 alloy tloorinc s l o t s where it has the added function of redm-iny the 11,insinissiuii at track noi.se. Limpet Asbestos i.s also extensively used for elieiiiieal and power plant. Idle perfect jointless fit to the insulated siirfaie pnweiit.s convection losses. This, coupled with low theimal conductivity and relatively linrli thermal capa city. makes it ideal for plant work. It has been ado]4e4 for the insulation of turbines all over the world and is pou> ordeted hy most leudiny turbine builders. Sprayed asbestos ju'oviih-s also protection ayain.'i tire for road tankers which i arry et hy leiie or pt'opy Icne oxide 4 . Li addition to tlie.l \Y. K'oherts Limpet process, use- is Iieiii*_r made of Seel sprayed asbestos insulation available Itom ('ham-cry Insulation Limited, a member o f the;('nivcrsul .Ma mi fact ti ri ne ('oiupany Limited. A similar'Kenspray process, app 1ie<1 by William Kenyon ami Son Ther mal 111' 111a t me: Company, uses mainly asb e sto s mineral wo >1 liin-e blends /7/7-7 /A.s'/I.AT/OX . 1s/n i / i/ c 1/ in/iii s'ia Over 7b years, sb p e r cent matrnesia. has a t t a i n e d ay. i cp ut at io n as one of the most pe rma ne nt practical Yon-;, servers of hi-at for t e mp e ra tu r es up to (i(IOK, i '!I(i"( '. ), * Page 8 ASBESTOS -- September , ENGINEERING Aul*tr*ss* 772 VAD^Z tlECMTtKSTtlH . <Swttx*rl4> P.O . Box 34 722 PIABTS PiOJECTEO BEurcatvS taaea nnaiicins aaaai S :a Mancipations stars lEtBiiEo EASBESTOS -- September 1966 < ; .> , Bfc -v(j1 v . '>*'*&%r >v,! - ' ^X!- . .r A ^ ' ^ f *v /`j - ';f, i.i .'i; , , --vi''-- - !' v^Af-r^-