Plaster and lath walls 1960s4/15/2024 Beginning in the 1970s, blown-in fiber insulation was added to many lath and plaster homes, but plaster obstructions and wood blocks within the stud spaces didn’t allow for even distribution, so the entire portions of walls didn’t receive any insulation. Older homes with lath and plaster walls rarely contain sufficient insulation in their stud spaces. That’s because the bottoms of stud spaces are often filled with a few inches of fallen plaster, which block the space and prohibit an electrician from “fishing” new wiring through the walls. It’s difficult to retrofit lath and plaster walls with new wiring without cutting into the walls. If the settling is substantial, chunks of plaster are likely to fall off the lath framework. When they do, plaster, which is hard and brittle, can often crack. If your existing home has lath and plaster walls – or if you’d like to incorporate new plaster walls in a remodeling project – keep reading to learn more about this old construction method that’s gaining new attention from fans. Lath and plaster construction is definitely an old school technique, but when compared to drywall, it has a few surprising benefits. When drywall panels came about in the 1950s, they soon replaced lath and plaster as a quicker, easier install option. Builder’s nailed thin, closely spaced strips of wood (lath) to wall studs and then smoothed multiple coatings of plaster over the lath to form flat wall surfaces. Ever since the 1700s and all the way through the 1940s, lath and plaster was the interior wall construction method of choice.
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