a 3/8' thick rough coat of plaster or maybe a rough coat and scratch coat that are very similar in composition, where the rough coat is from the 3/8' mark to the 5/8' mark on your tape. a 3/8' thick layer of rock lath or gypsum board lath. Leaving plaster in place also eliminates the need to remove and reinstall the finish trim, which even with the most careful effort can split. Hi to everyone at the MSE forums Were currently renovating our 1930s semi-detached property and as part of the renovations we would like to replace the existing lath and plaster walls with modern plasterboard and plaster. So from the top down and starting at zero on your tape, we have. Why should you keep and repair plaster walls rather than remove them in favor or drywall? Plaster is more durable than drywall, more effective in deadening noise, and the lime in the material helps resist mold. This practice largely faded by the 1960s, leading to today’s practice of finishing the seams of the wallboard and painting the paper surface. Initially, wallboard was installed as the backer, replacing the lath, and then coated with layers of finish plaster. Early wallboard came in smaller panels, typically 2’x4’ or 2’x8.’ Today, standard drywall comes in 4’x8’ or 4’x12’ lengths.ĭrywall allowed builders to rapidly cover large sections of framing. The product featured cured plaster sandwiched between two sheets of heavy stock paper commonly known today as drywall. In the 1930s, a new form of pre-made plaster board appeared on the market. If you examine plaster up close, you can see the different layers if you look at it in profile. The finish coat traditionally contained more lime, creating its white color. Once the brown coat cured, the next coat was scored or scratched before it cured to give a firmer grip to the final smooth finish coat. The brown coat derived its name from the color of the first materials troweled on to the wall. Plaster walls were typically created through a three-step process - brown coat, scratch coat, and finish coat. The labor-intensive process of installing lath gave rise to time-saving inventions, such as wire lath in the 1920s. Machine-cut lath appeared in the industrial era of the mid- to late-1800s. As solid wall construction gave way to wood frame construction, builders used quarter-inch hand-cut wood slats. First, you’ll repair the lath and then patch the hole. In ancient construction, plaster went directly onto masonry or other walls. Hanging Kitchen Cabinets On Lath And Plaster Walls. If you’re dealing with damaged lath and plaster wallsfor example gaping holes in the wall because of electrical workhere are techniques you can use to repair them. Lath comes in many forms and has changed over the millennia.
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