Document MQaVmJaOgROveM4Lv98vY66z

BE ST WALL FIREPROOF GYPSUM SHEATHING Fireproof Wind Resistant Water Repellent Reinforced with glass fibers Structural Strength Dimensional Stability FIREPROOF Bestwall Fireproof Gypsum Sheathing's core is in combustible gypsum. Gypsum is rock. It cannot support combustion. The combination of fireproof gypsum .ath and plaster walls or gypsum wallboard over wood studs applied as specified, plus fireproof gypsum sheathing under standard wood siding is officially rated for one full hour fire resistance from both sides. REINFORCED WITH GLASS FIBERS Only Bestwall Fireproof Gypsum Sheathing is re inforced with textile glass fibers in the core. This ex clusive Bestwall development provides easier, quicker application, cleaner breaks, greater flexibility, better nailing and strength. WIND RESISTANT Bestwall Fireproof Gypsum Sheathing provides great wind resistance. The precision-cut tongue-andgroove edges provide tight joints that prevent wind and rain infiltration. Because the panels are easy to cut and easy to break, the butted ends assure a tight fit, whether they are machine-cut or hand-cut. WATER >P'.LNT Another cost-saving factor of Bestwall Gypsum Sheathing over other types of sheathing is its water repellence. The specially treated core and surface papers together with the tongue-and-groove joints completely eliminate the need for an underlayer of treated building paper (except where required by local building codes). Bestwall Fireproof Gypsum Sheathing meets ASTM 79 including the water resistance requirement. This extra measure of water rcpellencc provides a solution to the old problem of outside on-the-job storage. ; *\ ,,_ ^SestwaU {<u", Sheathing application ttndci "tfrick Veneer. May also be used under Wood Siding;\ \Stueeo; Asbestos-Cement; Wood or Slate Shingles. &i Insert shows close-up of tongue-and-groove edges. STRUCTURAL STRENGTH . DIMENSIONAL STABILITY Bestwall's precision-made 2' x 8' panels, applied horizontally across framing members, tie 7 studs to gether. Precision-cut tongue-and-groove edges fit to gether to help make a permanent, rigid surface, struc turally strong and dimensionally stable. QUICKER APPLICATION Large 2' x 8' panels may be applied quickly and easily. Each panel covers 16 square feet of sidewall area, providing the full 24-inch surface without face loss. Since only 4x7 nails are required per panel ! de pending upon the type of exterior finish) both applica tion time and material cost are saved. SGP 0026327 GP-1968 BESTWALL FIREPROOF GYPSUM WALLBOARD APPLICATION INSTRUCTIONS While the following instructions apply generally to all types of Bestwall, specific refer ences to a particular type of board and type of edge should be read carefully before proceed ing. Note that the thicker the board used, the stronger, more durable and more fire-resistant the walls and ceilings will be. Also, in wall construction, horizontal application is recommended where joints are to be concealed, while vertical application is used where joints are to be left exposed or to be finished with metal or wood trim. In ceiling application, the boards should always be applied at right angles to the nailing member. General Instructions Plan the job beforehand. To obtain the best results, the job should be planned so that there are a minimum number of joints, thereby keeping the treatment of joints to a minimum. Example: in covering a 14' wide wall with a 3' window or door occuring 5' from one end, use 8' and 6' lengths applied horizontally so that joints occur above and below opening rather than run ning the full height of the wall. Joints must always occur over a stud. To do this, plan to use full size boards where practical and order the required number of 6' to 12' lengths (up to 16' available on order). Preparation :>f Framing Before applying board, framing should be carefully examined to be sure that all studs and joists are true, firmly nailed and in a plane surface. Nailing headers should be provided for all fixtures. Plumbing and elec trical connections should be completely roughed in and inspected. In applying gypsum wallboard over existing walls and ceilings, loose material should be tightened or removed: where the surfaces are badly damaged, or very uneven, furring 'trips should be used. As with new work, furring strips should be true, solid and in the same plane. Studding, joists and/or furring strips are spaced 16" on centers. J/i" or ithick wallboards may be applied horizontally to training 2-1" on tenters. Bowed or warped studs mav be straightened In sawing the hollow sides at the middle of the bow and driving a wedge into the saw kerf until the stud is in line. Reinforce by nailing 1" x 4" strips on each side of the cut. Framing at Openings See that there is a backing around openings for nailing of all ends of the wallboard. In new construc tion, order mill work with grounds the same thickness as the Bestwall board used. Where window frames are not cut dowm to correct depth, a wood filler strip should be nailed either on back of outside trim of win dow casing or on covering boards. This saves buildingout on the inside studs for proper clearance of standard frames. Door frames should be cut to size. If not. a moulding strip must be used. Brick Work In applying Bestwall over brick walls, anchor nail ing plugs in the mortar joints to provide for nailing of strips. To furnish a nailing surface, 2" x 2" (minimum) lumber may be used for furring strips, placed on 16" centers. Framing for Chimneys Furring strips should not be attached to chimneys or oti.er masonry subjected to excessive movement. Fur __ with 2" x 2" (minimum) lumber to provide nailing surface, nailing these fur ling strips together at the corners, to the floor and ceiling and to the wall, but not to the chimney itself. This will allow free movement of the chimnev. SGP 0026328 The wallboard may be cut to fit by .scoring it on the face side with a sharp knife (using a straight edge) so that the surface paper is parted. Then lay the panel over a solid support with the scored side up. Snap the sheet back, away from the scored face. Then score the back surface along the break. This method is fast and clean; however, the panel may also be cut with a saw. Nailing Be sure that wallboard edges are butted, but not forced into place. Nail panels to intermediate joists first, from the center to the edges; then nail the ends. Never nail closer than Y%" to edge or end of the board. Nails should be spaced not to exceed 7" apart on ceil ings and not to exceed 8" apart on walls. Leave nails in a "dimple", formed by the last blow of crowned-face driving tool. Do not use a nail set or break the face paper in nailing. Nail adjoining edges and ends so that nails are opposite each other, not staggered. The nails to be used with each thickness of wallboard are: (4" BOARD - Flat head, diamond point nails, 1 Zi" long. 3/g" BOARD -- (a) 1 3(4" gauge, 1 fg" long, (4" dia. flat head. Medium Diamond point, cement coated annular ring nail. (b) GWB 34 nail. 1(4" long annular ring nail, (4" fiat head. Medium Diamond point. (c) 4d common flat head nail, 14 ga. steel wire, 1 V8' long* 7/32" dia. flat head. Long Diamond point. (4" BOARD -- (a) 13(4" gauge, 1^4" long, }4" flat head. Medium Diamond point, cement coated annular ring nail. (b) GWB 54 nail. 1(4" long annular ring nail, (4" dia. flat head. Medium Diamond point. (c) 5d common nail, 1^4" long, 15/64" dia. flat head. Long Diamond point. y8" BOARD -- (a) 13(4" gauge, 1$4" long, *4" flat head. Medium Diamond point, cement coated annular ring nail. (b) GWB 54 nail. 1^4" annular ring nail. (c) 6d common nail, 1^4" long, (4" dia. flat head. Long Diamond point. y8" FIRESTOP BESTWALL -- 6d - 13 gauge-1J4" long, }4" dia. flat head. Long Diamond point nails. Ceilings The ceilings should be completed first, the panels being applied at right angles to (across) the joists. The recommended method calls for two men, on staging or stilts, supporting the board on their heads while nailing the board into place. Where one man is working alone, a -`T Buck" and staging should be used. The upright "T Buck" should be 1" longer than the height of the ceiling. F'or staging, two ordinary saw horses and plank ing may be used. A crosspiece about 3 feet long is nailed across the studs about %" below the ceiling. One end of the Bestwall panel is slid on the crosspiece. The other end is raised into position by the use of the "T Buck". The board is then nailed in place. If possible, span the entire width (or length) of the ceiling with one panel, to eliminate end joints that would require treatment. Otherwise, stagger end joints. Horizontal Application -- When joints of wallboard arc to be concealed by the Bestwall Joint System, horizontal application is recommended. Longer panels SGP 0026329 can be used and the fewer joir.ts can be treated easier by being at waist level. Tapered edge wallboards should always be applied horizontally. Grain boards are always applied vertically. Apply wallboard to upper corner first and work across and down wall. Vertical joints should be stag gered. Wall joints should never meet ceiling joints at ceiling line. Avoid vertical joints at edges of openings. Either cut opening out of a full panel or plan joint to occur on the stud nearest to the center of opening. Vertical Application -- Bestwall Wallboards with square or beveled edges, such as Bestwall Grain Boards, present a more attractive appearance when applied vertically. The joints may be covered with wood trim, or left exposed. In either case, the joint pattern should be planned carefully before installation is begun. The wallboard panels arc furnished in lengths that will reach from floor to ceiling of most rooms. When ap plied vertically, there are no horizontal joints. If the panels do not quite reach the ceiling, baseboards and mouldings could be used to cover the remaining height. Avoid vertical joints at edges of openings; they should occur on stud nearest tne center as shown above. Corners Double Studs should be provided at all wall inter sections. Wallboard corners are formed by lapping one panel over the edge of the other panel. Bestwall Metal Corners and Metal Casings may be used for stronger and neater installations. Staples Nails or staples may be used in the first ply of twoply application. If nails are used, then instructions should be followed as previously. Power-driven staples may be used to attach the first-ply only of two-ply gypsum wallboard to wood framing members. The staples should meet the following minimum requirements: Wire 16 U. S. Standard gauge flattened galvan ized wire. Staple Crown -- Flat, 7/16/r wide (outside measure). Staple Legs ---. For 3/s" thick first-ply board -- 1" long with divergent points. For y2" thick first-ply board -- 1J/8" long with divergent points. Staples should be driven with the crown at right angles to the paper bound edges of the wallboard except where the paper board edges fall in the framing mem bers. Then the staples should be driven parallel to the edges. Staples should be driven in such a manner that the crown bears tightly against the wallboard but does not cut into the face paper. The legs of the staple should be not less than from the ends and edges of the wallboard. Staples should be spaced not more than 7" on center on ceilings and not more than 8" on center on Decoration Bestwall Wallboards may be decorated as soon as joint treatment is completed and thoroughly dry. Paint, enamel, wallpaper or any other treatment may be ap plied. However, it is recommended that a pigmented varnish primer or a pigmented vinyl primer first be applied to provide an even suction over the paper and joint cement. Then follow the application recommenda tions of the manufacturer of the decorative material. Bestwall Wood Grained Wallboards may be given a glossy finish by painting with a clear shellac or by var nishing and then waxing. SGP 0026330  PRODUCT DATA mm 1 BESTWALL , Tapered 1 GYPSUM WALLBOARD | Square, Tapered 'V 4' 6' to 12' ' 4' 6' to 14' 1075 1525 16" o.c. 16" o.c. GWB-54 or 4d GWB-54 or 4d 3.8 3.8 2 2 or Beveled '2 ' 4' 6' to 14' 2050 16" or 24" o.c. GWB-54 or 5d 5 2 5e 4' 6' to 14' 2600 16" or 24" o.c. GWB-54 or 6d 5 2 BESTWALL BACKER Square V 2' or '6' ; 4' to 14' : 1525 16" o.c. i GWB-54 or 4d ; 3.8 2 1 BESTWALL INSULATING Square or Tapered GYPSUM WALLBOARD* Square or Topered 3/e` 4' 6' to 14' V : 4' 6' to 14' 1525 2050 16" o.c. GWB-54 or 4d 16" or 24" o.c. , GWB-54 or 5d . 3.8 5 7" max. 0. c. 2 2 BESTWALL 1 GRAIN BOARDS Square: Knotty Pine Beveled: Figured Aspen Ribbon Mahogany Driftwood Mahogany Autumn Mahogany Fawn Mahogany V ' 4' w 4' 8' 9', 10' 8' 9', 10' 1525 2050 16" o.c. 4d-Colored Head 16" or 24" o.c. 5d-Colored Head 3.8 5 ceilings Tb' 4' 8', 9', 10' 12' , 4' 8', 9', 10' 1525 16" o.c. 4d-Colored Head 2050 16" or 24" o.c. 5d-Colored Head 3.8 8" max. 0. c. walls 5 2 2 2 2 FIRESTOP BESTWALL GYPSUM WALLBOARD Tapered Tapered 5 2' 4' 6' to 12' 2150 1 6" or 24" o.c. V 4' 6' to 12' 2600 16" or 24" o.c. 5d c.c. 6d c.c. 5 6.5 2 2 FIRESTOP BACKER Tongue-and-Groove V 2' 6' to 12' 2600 16" or 24" o.c. 6d c.c. 7 2 BESTWALL GYPSUM SHEATHING V Edge Tongue-and-Groove V 2' 134"-l 1 Gauge Large head 8' 2050 16" or 24" o.c. Galvanized 1 Roofing Nails ivM <s's mf* *t' *t ` 's ' * $ . 4 -k ^ Pockoge No. 1 Bags 18 lbs. Cement, 250 ft. Tape ' 4.6 8"oncenters 2 11.3 4" on centers ; .-7 . ' iv l fY . . ng Wt Package No. 2 4 lbs. Cement, 60 ft. Tape 6 Boxes per Case 3 I !b, Note: Vi" & 5/b" thick Bestwall available in 14 x 16 ft. lengths on special order. Vi" & 5s" thick Firestop Bestwall available in 14 x 16 ft. lengths on special order. Package No. 3 4 lbs. Cement, 60 ft. Tape, Plastic Broad Knife 5 lb. boxes -- Cement Only 25 lb. bags -- Cement Only B.J.S. Bedding Compound ! 25 lbs. 6 Boxes per Case ; i 6 Boxes per Case Bags Bags B.J.S. Topping Compound 25 lbs. Bags 3' ns 3 1**ns !! j os. 25 'bs. tlRtPR0L.-GyPSU/u 6 U,^/NcTIUJJPROoUC 1S B.J.S. Laminating Compound ; Bags 25 lbs. I j Bestwall Tape i 250 ft. Rolls ! 500 ft. Rolls 20 per Carton 10 per Carton Data on wallboard accessories are presented description. BESTWALL GYPSUM COMPANY General Offices -- Ardmore, Pennsylvania Plants and District Offices in Principal Cities throughout the United States Form No. BW-59154 SGP 0026331 Prir->