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442 Insulation * PITTSBURGH DEPT. S-9, ONE GATEWAY CENTER CORNING PITTSBURGH 22, PA. FOAMGLAS . . . the cellular, stay-dry insulation What FOAMGLAS is ... FOAMGLAS is a unique thermal insulation composed of closed cells of glass. It possesses a combination of physical characteristics which makes it virtually an ideal insulation. It is completely inorganic and thus will not bum, rot, swell or slump. Its closed cell structure renders it impervious not only to moisture but to moisture vapor as well. Because it is water and vapor proof, it retains a constant insulating value (k) for the life of an in stallation. In addition, FOAMGLAS doesn't require a costly separate vapor barrier. FOAMGLAS is unusually strong, having an average ultimate compressive strength of nearly 7 tons per square foot. But FOAMGLAS is light in weight, works easily with ordinary tools and therefore is very easily installed. All of these characteristics have enabled FOAMGLAS users to benefit from its constantly-high insulating performance. That's why FOAMGLAS has gained recognition as an excellent insulation for roofs, ceilings, walls, and floors of all kinds of buildings as well as for hot, cold and dual temperature piping, tanks, and other equipment. For Building, Roofs, Ceilings, Walls and Floors. At Win ston-Salem, FOAMGLAS* high strength permitted insulating parking deck-roof of Sears Roebuck's air con ditioned store. In your building, moisture-proof FOAM GLAS insulation can help maintain air conditioning sys tem efficiency. HOW FOAMGLAS can benefit you: Absorption Properties 0 Combustibility Compressive Strength Incombustible 100 Iba/sq in. Hygroscopic!ty Density No increase in weight ia MS days in air at 00 percent relative humidity 0 tbs/eu (t (are) ThermalCocduo- 0X8 Bta/br/sq fl/*F/ tivity (k) atS0*F ia. Benchts Moisture reduces insolation effec tiveness and life. FOAMGLAS stays dry, ms intaming constant insulating value. Protects from fire hazards. Offers unusually high strength lor varied structural and load bear ing applications. FOAMGLAS is its own vapor bar- Lightweight, easy to handle and install Excellent insulating value that remains constant. FOAMGLAS is approved by Undeneritert' Laboratories and is listed under Label Service. For Piping. FOAMGLAS pipe insulation (available for up to 36 in. pipe size) was applied on this welded pipe currying cold water for the system air conditioning several new skyscrapers. For full technical information, please write for our new catalogs indicating which of the above uses of FOAMGLAS you are most interested in. Address Dept. S-0, Pittsburgh Corning Corporation, One Gateway Center, Pittsburgh 22, Pa. Insulation cu Pittsburgh Plate Glass Company FIBER GLASS DIVISION One Gateway Center Pittsburgh 22, Pennsylvania 443 Pittsburgh Superfine insulation is-composed of extremely fine glass fibers, ranging upward in diameter from only 3/100,000 of an inch. It's an exceptionally light-weight, efficient thermal and acoustical insulating material. When specifications call for control of heat or cold--or you need sound absorbed or deadened--here are some of the ad vantages Pittsburgh Superfine Fiber Glass insulation provide: High Thermal Efficiency--Thermal conductivity, k, at a mean temperature of 75 F is 0.22 to 0.29 Btu (sq ft) (hr) (deg F) (in.) thickness, 'depending on density. Effective for both high and low temperatures ranging up to 500 F. Fine Acoustical Properties--Noise reduction co efficient of a 1 in. thickness is as high as 0.85 with the sound absorption curve showing high efficiencies in the ranges of the most irritating noise. Light Weight, Easy to Handle--Added load in any application is virtually negligible. Readily cut with knife, shears, or dieT Can easily be sewed and quilted, glued, tacked or taped into position. Flexible, Resilient, Tough, and Soft---Made from long, fine glass fibers to attain superior qualities. Can be used on round or irregularly shaped objects and spaces as easily as in conventional layers. Fits closely into comers and tight spots quickly and easily, OTthout damage to its structure. Saves Vital Space--In use: Higher insulating effi ciency means less thickness of Superfine required, as compared to ordinary insulation. In shipment: Pack aged compressed to reduce shipping and storage space. STANDARD SPECIFICATIONS--Pittsburgh Super fine is available in standard roll widths of 18 in., 24 in., 36 in., 48 in., 54 in. and 72 in. It can be supplied in any desired width down to 2 in. Rolls are wound on 2 in. tubes and wrapped in heavy kraft paper. Superfine is also available in special lengths on request. It is furnished neoprene coated for *Duct Liner or with various paper, cloth or foil facings.