Such staples may be placed over ribs of 3/ 8-inch (9.5 mm) rib lath or over back wire of welded wire fabric or other approved lath, omitting the 10d nails. 9 W & M gage, ring shank, hook staple placed around a 10d common nail laid flat under the surface of the lath not more than 3 inches (76 mm) from edge of each sheet. Secure lath to each support with 1/ 2-inch-wide (12.7 mm), 1 1/ 2-inch-long (38mm) No.Wire ties shall be installed not less than 3 inches (76 mm) back from the edge of each sheet and shall be looped around stripping, or attached to an 8d common wire nail driven into each side of the joist 2 inches (51 mm) above the bottom of the joist or to each end of a 16d common wire nail driven horizontally through the joist 2 inches (51 mm) above the bottom of the joist and the ends of the wire secured together with three twists of the wire. A two-coat conventional plaster system uses ROCKLATH Plaster Base instead of metal lath, one thickness of basecoat. After about 1900 gypsum became the main ingredient - its safer to work-with for one thing - in a version of plaster most-widely referred to as either 'gypsum plaster' or plaster of Paris. Allow to cure for 24 to 48 hours before applying the finish coat.

Keep the brown coat at least 18 below the level as it begins to set up. 18 W & M gage galvanized annealed wire at one edge of each sheet of lath. Before about 1900 in North America the principal plaster mix included lime, sand, horsehair and of course water. Use the same plaster for the brown coat and apply it in much the same way: Prep the surface by generously dampening it with water before you begin. Secure lath to alternate supports with ties consisting of a double strand of No.Where interior or exterior lath is attached to horizontal wood supports, either of the following attachments shall be used in addition to the methods of attachment described in referenced standards listed in Table 2507.2.

Lath and plaster wall section