Document 93zRxXE4Y5XjYqzry1xrearwR

SHEETROCK ^ PERF-A-TAPE r Joint System SHEETROCK Gypsum Wallboard is versatile, fireproof and durable. There are very few limitations when you build or remodel with SHEETROCK. Horizontal application of SHEETROCK Wallboard (long edges at right angles to framing members) is recommended because it usually reduces the lineal footage of joints to be concealed and this method provides a convenient working height for joint finishing. For explanation of conditions when vertical application may be more advantageous, see diagrams, below. TOOLS NEEDED 1. A sharp cutting knife 2. Keyhole saw 3. Straight edge 4. Rule or measuring tape and pencil 5. Carpenters hammer (Plastic head for Woodgrain finish) .6 4 or 5 inch application knife 7. Mixing bucket and 4'long 1'x 2" ' stirring paddle _ 8. Breadpan -_ 9. Sanding block ^ "r f _ Q 4 0 ~ pn ~ PLAN THE JOB WALL APPLICATION HORIZONTAL M------------ 12'0"-------------- CEILING APPLICATION VERTICAL HORIZONTAL Apply panels horizontally (perpendicular to joists) or ver tically (parallel to joists) whichever method will result in fewest joints, using longest lengths of board obtainable. Butt joints, if any, should be staggered. I2'0" LINEAL FT. OF JOINTS Always use longest lengths of SHEETROCK Wallboard obtainable. Span whole wall from corner to corner if possible. Stagger end joints. Most walls in today's homes are 8'0' to 8'2" from floor to ceiling. This is an ideal situation for horizontal application of SHEETROCK Wallboard since this method re duces lineal footage of joints to be treated (see diagrams). In horizontal application waste pieces are used to fill space at bottom of walls, if required. This area is covered with baseboard. VERTICAL rrh-------------- 1 2'0 " ------------!' 8' ca C3 O 0 01 O 6 'T M REG U.S PAT OFF 16'0" LINEAL FT. OF JOINTS APPLYING REGULAR SHEETROCK WALLBOARD 4. SANDING--Smooth the cut edges with coarse sandpaper wrapped around a block of wood, a rasp, or trim with cutting knife. V Nail spacing 1" on ceilings S. BOWED OR WARPED STUDS-- Such studs may be straightened by 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' wood strips on each side of the cut. Nails not less than ya" <* from end > Nail spacing 8' on sidewalls S. DIMPLING--Nails should not be coun tersunk nor should the surface of the paper be broken. Drive nails home leaving a slight "dimple." Fill latter with PERF-A-TAPE Cement. 7. NAILS and SPACING--yt" and thickness, 1GWB-54 annular ring;'/" thickness, 1 /" GWB-54 annular ring or; thick ness, V/,' annular ring GWB-54 type nail. Nails should be not less than %' from the edges and ends, and spaced T apart on ceilings and 8" on walls. During nailing, board should be pressed firmly against studs and joists. J. CUTOUTS--Openings for electrical switches and outlets can be made with a keyhole saw. To locate the exact position, hold SHEETROCK panel in place. Then using a wood block to protect the board, tap around the outlet with a hammer. The indentation on the back of the board is your guide for cutting. i26fi 9. CEILINGS GO UP FIRST--Usually two men work on a ceiling, nailing from center of panel, towards ends and edges with nails 7' apart. A MX / I IO. WHEN HORIZONTAL CONSTRUCTION if uu wall panel is applied first and butted against the ceiling. Orw sw ings, end joints should be on studs. Where possible span .* wall. End joints should be staggered. If Insulating SHEET*00 Wallboard is used, apply foil side to framing. JO 'ii ij !-v / W 11. VERTICAL APPLICATION should be used when ceiling height is over B'T, or where this method results in less waste or joint treatment. Boards should be accurately cut to fit, and should not be forced into place. 12. WINDOWS in new construction, can be cut out after SHEETROCK Wallboard is applied. Where sash is already in place, make cutouts before application. iO . >/ 13. RESURFACING OLD WALLS AND CEILINGS--Remove all loose and poorly bonded plaster. Voids must be brought into a reasonably continuous plane with the wall surfaces by nailing SHEETROCK Wallboard in place, cut to fit and shimmed as re quired. Nail through SHEETROCK Wallboard and existing old sur face into studs and joists with 6d cooler type nail spaced 7' on ceilings, 8' on sidewalls. 14. FURRING OLD WALLS AND CEILINGS--SHEETROCK Wallboard is nailed to 1" x 3" furring strips if necessary, shimme^ out to a true even plane with wood shingles, spaced 16* -c` board applied parallel to strips with end joints staggered. Boar nailed T o.c. on ceilings, 8' o.c. on sidewalls with nails reco mended for wallboard type and thickness used. I Simple steps to reinforce and conceal SH EETROCK Wallboard joints with PERF-A-TAPE joint system Available in bags containing 250 lineal feet of tape and 18 lbs. of compound, and boxes containing 60 lineal feet of tape plus 4y2 lbs. of compound. Compound only, available in 5 lb. and 25 lb. bags. o reinforce and conceal joints se a 4 or5 inch wide application ife, mixing bucket, bread pan nd PERF-A-TAPE Joint Sys:m. (See page 6 for quantities .quired.) (A) Mix compound according to directions in the package. Butter the compound into the channel formed by the tapered edges of SHEETROCK, filling channel evenly and fully. (B) Center PERF-A-TAPE re inforcement and force it into taper with knife held at conven ient angle to board. Draw along jointto remove excess compound. Leave sufficient compound under tape for proper bond. (C) Cover the tape with a thin layer of compound to fill taper flush with face of board. Allow to dry. At this time nail heads should be spotted with first covering coat of compound. (See illustra tion below.) (D) After the first coat has dried (usually next day) smooth with sandpaper. Then cover with sec ond coat, feathering edges of ce ment at least two inches beyond first coat. Allow to dry. (E) Sand lightly, then apply a third "finishing" coat level with field of board. This coat should be feathered out at least two inches beyond second coat. After drying, light sanding may be necessary. (F) Over end joints, application is the same as for tapered edge joint treatment except that the finishing coats of PERF-A-TAPE joint compound must be feathered out approximately 12" on each side of the tape. (G) Spotting nail heads. Draw a broad knife across nails. If there is a metallic ring, drive nail home, leaving a dimple in face paper. Fill this depression with compound to level of wall sur face. For best results, 3 such fillings are required. (H) Inside Corner application. Fold tape along center crease. Butter both sides of corner with compound and apply tape. Apply second and third coats the same as to a flat joint. (I) For best outside corner application, use DUR-A-BEAD* MetalCornerReinforcement. Apply with gypsum wallboard nails spaced 3" apart, using metal bead as a screed, cover both flanges with PERF-A-TAPE joint com pound. Two coats are usually required. (J) Optional outside corner ap plication. Butter both sides of corner with compound. The PERF-A-TAPE is folded along center crease and embedded in compound. Then apply second and third coats of compound. (K) Curved edge application. Crease tape in center. Cut in from edge applied to wall as far as crease to make tape flexible, (scissor cuts are about apart). Embed and apply second and third finishing coats. T.M. Re*. U.S.Pit. 0(1.