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Insulation Johns-ManvUle Execute offices: 22 East 40th Street, New York 16, N. Y. Offices In All Large Cities Home Insulation Applying SpinUx bolts in nets borne For Existing Homes and Buildings: J-M Spintex "Blown" Home Insulation J-M Spintex Home Insulation is nodu lated rock wool which is blown pneu matically into the spaces between studs in outer walls and between roof rafters or attic floor joists. Insulation thickness in walls corresponds to stud depth, approximately Z% in. The uni form fill assures maximum thermal effi ciency. This type of insulation is sold and installed only by carefully selected experienced and officially franchised J-M Blown Home Insulation Contrac tors. For complete information on J-M Spintex "Blown" Home Insulation and its application, write the address above or call your local Johns-Manville office. For Hew Construction: Spintex . Batts and Blankets Johns-Manville Spintex Batts and Blankets are made of spun rock wool. Instead of short, coarse fibers, this J-M spinning process produces long, fine fibers which make better, more firmly felted batts and blankets that : are stronger, lighter in weight, more resil ient, and have greater uniformity throughout. They are rotproof, fireproof, and assure the homeowner of maximum year-round comfort, protection and winter fuel savings. SPINTEX BATTS are strong and sturdy. They will not break down under rough handling but hold their factory-made shape and uniform thickness . . . will not crumble or fray when cut to fit irregular spaces. Each batt has a vapor seal back ing to protect against the passage of abnormal humidity and a tacking flange for ease of installation. Spintex Batts are furnished Ful-Thik and Semi-Thik. Ful-Thik Batts have an average thickness of 334 in.; Semi-Thik, an average thickness of 2 in. Both types are available in sizes 15 x 24, 15 x 48, 19 x 24, 19 x 48, 23 x 24 and 23 x 48 inches. SPINTEX BLANKETS, made of the same firmly-felted long fiber spun rock wool, are fully enclosed in a permeable wrapping with an approved vapor seal backing and a tacking flange. Thick Blankets, approximately 3 in. in thickness, are furnished in sizes 15 in. x 48 in. and 23 in. x 48 in.; Medium Blankets, approximately 2 in. thick, in sizes 15 in. x 64 ft, 23 in. x 64 ft, 15 in. x 8 ft and 23 in. x 8 ft; and Service Blankets, approximately 1)3 in. thick, in sizes 15 in. x 8 ft and 23 in. x 8 ft. Airacoustic Sheets for lining Air-Conditioning Ducts J-M Airacoustic Sheets provide a fire- safe, sound-absorbing material de veloped for use in ventilating ducts. Since they absorb a large percentage of the sound that strikes them, they pro undesirable duct noises. Composed of rock wool and a suitable binder, Aira coustic Sheets are available in size 24 in. x 36 in., and in thicknesses of in vide a highly effective means of reducing and 1 in. Spintex Duct Insulations Spintex Duct Insulations are incom bustible . . . provide high insulating effi ciency and long service life. Their low installed cost is the result of JohnsManville's long experience in developing scientifically correct insulations and proper methods of application. They are furnished as blankets and semi-rigid boards. The densities range from 2 to over 6 lb per cu ft, providing flexible and stiff materials for round or rectangular ducts. 1652 Johns-Manville Insulation Pipe and Boiler Insulations J-M FIBROCEL J-M 85% MAGNESIA A new low pressure insulation which, be cause of its mineral composition, is equally suited for use on chilled water or low pressure steam pipes. Non-shrink ing, aecay-resistant, fireproof, thermally efficient, economical to apply, hard texture. Completely eliminates objec tionable shrinkage ... no more gaping joints with accompanying heat leakage. Three jacket styles: Fibrocel C with canvas jacket for steam or hot or cold water service from 60F to 300F; Fibrocel , G with glazed white plastic-coated paper jacket for steam or hot or cold water service from 60F to 300F; and Fibrocel VB with vapor-barrier jacket for chilled water or dual service heating and cool ing systems between 35F and 200F. PRE-SHRUNK ASBESTOCEL Cellular type insulation made up of alternate layers of plain and corrugated asbestos felts for use on pipes conveying low pressure steam and hot water. Three finishes: Glazed White, Asbestos Paper and Canvas. Furnished in 3-ft sections to fit standard pipe sizes* and in standard thicknesses of 2 to 8 plies, each ply ap prox. Yi in. thick. Temp, limit, 300F. PRE-SHRUNK WOOL FELT Effective for either hot or cold water service lines. Prevents sweating on cold water pipes. Made of moisture-resistant indented wool felt with dual-service liner. Supplied in 3-ft lengths in canvas finish or weatherproof jacket, in thick nesses of 33 in. to 2 in. single-layer and 1, 1)3 and 2 in. double layer for pipe sizes >3 in. and up.* Temp, limit 225F. ASBESTOCEL SHEETS AND BLOCKS For insulating medium and low pressure boilers, feed water heaters, warm air ducts, etc. Furnished 6 to 36 in. wide, 36 to 96 in. long, from )3 to 4 in. thick. * Also available to fit straight nras of copper tubing with nominal diameters of % in. and up. The high insulating value and per manence of J-M 85% Magnesia Block and Pipe Insulation have been proved over many decades of satisfactory, trouble-free service. Blocks are fur nished 18 and36 in. long;3 and6 in. wide (flat or curved), 1 through 4 in. thick; 9 and 12 in. wide (flat only), 1)3 through 4 in. thick. Pipe insulation is furnished in 3-ft lengths in sectional or segmental form for all standard pipe sizes, in nominal thicknesses up to 3 in.* Temp, limit 600F. SUPEREX COMBINATION Superex Combination Insulation (an inner layer of J-M Superex, a material with high heat resistance, and outer layer of J-M 85% Magnesia, a material with great insulating value) is recom mended for temperatures from 600F to 1900F. Both Superex and 85% Magnesia are available in sectional and segmental pipe covering and in block form. ROCK CORK Rock Cork is made of mineral wool and an asphaltic binder molded into sheets and pipe insulation for all low tempera ture service. It is strong, durable, and will not support vermin. Because of its unusual moisture-resistance, its high insulating value is maintained in service. Furnished in sheets 18 in. by 36 ill,, (18 in. by 18 in. available in 1 in. thick ness only), in 1, 1)3,2, 3 and 4 in. thick nesses. Lagging, for curved surfaces, supplied 18 in. long by 1)3 through 4 in. thick, 2 to 6 in. wide, depending on diameter. Pipe covering furnished in Ice Water, Brine, and Heavy Brine thicknesses, for all commercial pipe sizes.* Discs also available to a 36 in. max. diameter. DETAILS ON REQUEST For further information about J-M In sulations and J-M Application Service, write Johns-Manville, 22 East 40th St., New York 16, N. Y. 1653