Document bKkMGDRZxJonekLZLn0zn5pk

i&wS->i 'V,v- v; '7 ' : '' 5 ?' '-"'V,';; ,BfalIs and Ceilings .with tiCKIilTHP* STATE S GYPSUM COMPANY < 1 ' 4m \V ;-3 \1 i'-r- ' ''-v // :& -- r ,, X'o. * r^r'VXZtXX - *t: PERFORATED ROCKLATH Meets Today's Need tor a Fireproof, Strong Plaster Base vVhen you think of walls and ceilings for a new building, plaster base made by encasing a core of gypsum between /ou no doubt think first of a decorated surface; you think two sheets of stout fibrous material. It is five-sixteenths n terms of the effect of the finished, decorated surface inch thick, comes in pieces 16 inches wide and 48 inches m the eye. And in so thinking you are right; for the part long. In each sheet perforations one-half inch in diameter if any interior that is seen most, that more than any other spaced four inches apart are made. ingle feature makes interiors attractive, is the wall and veiling area. The photograpns at the head of this page illustrate how simple is the erection of a Perforated Rocklath-Red Top How important it is, then, that the materials over which Plaster wall. The lath is applied with ordinary tools over le decoration is to be applied be carefully considered, framing; plaster is applied with unusual ease over the lath. or it is upon the quality of these materials--upon the uality of the interior finish--that the effectiveness of the ecoration greatly depends. When plaster is applied over Perforated Rocklath it bonds to the lath with a double grip--first, the grip of plaster to the surface of the lath (twice the grip of plaster So in selecting the interior finish over which decora- to the average lath); then the grip of the "mechanical" on is applied, check these features: 1. Will it provide keys formed as plaster is forced through the perforations. hard and lasting surface that will allow decoration (that The result is a wall that meets the specifications set up ay well cost as much or more than for the ideal interior finish. e interior finish) to be permanently tractive? 2. Will it give the biiildg added strength and help keep the nshed wall free of blemishes? 3. Is fireproof, will it help protect the aiding and its occupants from fire? Is its cost in line with the cost of aterials ordinarily used? These you may think are rigid ecifications. They are rigid specifitions. But they are specifications at are met in every respect by an ;erior finish of Perforated Rocklath d Red Top'' Plaster. Perforated Rocklath is a gypsum 1 ,Perforated Rocklath and Red Top Plaster provide beautiful permanent walls The finish is first of all an excellent base lor decoration -- smooth, hard, highly resistant to cracking. It is a finish that adds greatly to the rigidity of the building. It is a finish that has superior resistance to fire -- for it consists of almost an inch of solid, non-combustible gypsum. And considering its many added ad vantages, the cost of this interior finish is unbelievably low; so low that a Perforated Rocklath-Red Top Plaster finish actually costs little if any more than a finish of old-fashioned, less satisfactory materials. Copvriqhl 1937, United States Civpsu,,, C.imwnv S-M 5-37 *Trdde*marks BB016 2178 These Are Features That Make Perforated Rocklath the Preferred Base for Plaster EASILY, QUICKLY APPLIED EASY TO PLASTER OVER STRONG BOND FOR PLASTER Perforated Rocklath is economical to use because it goes on quickly. It comes in 16 by 48-inch pieces that fit standard framing and are nailed directly to joists and studding. Perforated Rocklath is handled with exceptional ease, can be "scored" with a hatchet and broken, as shown in the illustration. It is shipped in bundles -- seven lath to the package--that protect edges and surfaces from mill to job. Plasterers everywhere like Perfo rated Rocklath because it gives them a better base to plaster over. The perforations "take hold" of the plas ter, literally "slice" it from the trowel. Because it makes the plasterer's job easier, he is more able to produce a fine, craftsmanlike job. And he likes Perforated Rocklath too because it enables him to give the owner a stronger, more fire-resistant wall, suitable for any decoration. This illustration is a photographic "close-up" of the back side of a sec tion of Perforated Rocklath plastered with Red Top Plaster. Notice how plaster forms ''mechanical" keys when forced through the perfora tions. And remember that this "me chanical" keying is in addition to the already strong grip of plaster to the surface of Perforated Rocklath itself --proved in tests to be greater than for any other type of lath. Greater Protection From Fire Because Perforated Rocklath Is Incombustible If Perforated Rocklath were not su perior in other respects--strength, permanence, grip for plaster--the one fact that would still argue for its use in buildings is its unequalled re sistance to fire. Think of the millions of dollars worth of property destroyed every year by fire, of the thousands cf lives fire snuffs out every year. Is not this sufficient reason for more fire-safe construction--for the Perfo rated Rocklath-Red Top Plaster wall that has been proved to have ex traordinary resistance to fire? To demonstrate this resistance to fire, tests were conducted at the Bureau of Standards. At the con clusion of the tests, a Perforated Rocklath partition three-eighths inch thick when plastered with one-half inch of gypsum plaster, was shown to have qualified for a one-hour fire rating--a preferred fire rating. This superior resistance to fire means that in case of fire, fire-fight ing equipment has more time to get on the job; it helps confine fire to rooms of origin; helps protect not only the building, not only furnish ings and furniture, but also life. If BO.1 6 S I 7 9 USG PLASTER AND LIME PRODUCTS FOR EVERY PLASTERING NEED Included in the complete line of plas ter products that the United States Gypsum Company makes are plaster and lime materials to meet practically every plastering need. All these prod ucts are made in modern, well-equip ped plants, under the expert super vision of men with years of experience in guiding the manufacture of ma terials for building. Here is a listing of U S G plaster and lime products: CEMENT PLASTER WOOD FIBER PLASTER SANDED PLASTER BONDCRETE GAUGING PLASTER MOULDING PLASTER *' ' TROWEL FINISH PLASTER FLOAT FINISH PLASTER KEENE'S CEMENT ORIENTAL INTERIOR COLORED FINISH PLASTER ORIENTAL EXTERIOR COLORED STUCCO THESE ARE WELL-KNOWN BRANDS OF USG FINISHING LIMES: IVORY HYDRATED FINISHING LIME GRAND PRIZE HYDRATED FINISHING LIME IED TOP HYDRATED FINISHING LIME For Strong, Permanent Walls and Ceilings Use Red Top Plaster Over Perforated Rocklath First need in getting a lath and plaster wall that will give long, satisfactory service and provide a good base for decoration is good lath. Perforated Rocklath fills that need. Second need is a high quality plaster. Red Top Plaster fills that need. For more than thirty years, Red Top Plaster has been the stand ard of gypsum plastering materials. Its quality and strength have been tested in laboratories and on many thousands of jobs. Recent improvements are so significant that you can't afford to overlook them when selecting the brand of plaster you intend to use. More uniform setting time, greater plasticity, better working qualities, and better keeping qualities are among the important improvements. These improvements are important because they make possible better plastering work and encourage a higher standard of plastering than was ever before possible. Good lath--Perforated Rocklath, plastered by competent work men with good plaster--Red Top Plaster--these are the requisites of good walls and ceilings. Insist on them for your next plaster job. Use USG Finishing Lime For Finish Coat a Standard plastering practice for lath and plaster walls is to apply two coats of gypsum plaster topped with a finish coat. For this finish coat, USG Finishing Lime gauged with Red Top Gauging Plaster is ideal, producing a smooth, hard, white finish suitable for any decoration. o UNITED STATES GYPSUM COMPANY