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Drywall over lath and plaster walls4/19/2024 ![]() What Are the Codes?īuilding codes vary by location. The knob and tube system was never designed to stand up to the electrical load of modern life. Think about all the electrical devices we use today! Chargers, televisions, kitchen appliances, and the list goes on and on. A house in 1930 only had electrical lights, and maybe a radio. The other drawback to knob and tube wiring is its electrical limitations. The purpose is to carry excess electrical currents safely away from your home and into the ground. A ground wire runs from your house into the ground. One of the main drawbacks of the knob and tube wiring system is that there is no ground wire. This innovation saved many homes from fires! Porcelain was used because it helps the heat from the wires dissipate. If a wire needs to go through a beam, it is encased in a porcelain tube. The wires are wrapped around the knobs in order to keep tension and hold the wires away from the wooden beams. Rubber sheathed wires run between each of the knobs. The knobs are porcelain knobs that are attached to the beams and studs in the walls. ![]() Knob and tube wiring is named because of its two main components: knobs and tubes. Today, many homeowners are concerned about their knob and tube wiring but don’t know much about it. No wonder it was a popular choice among home builders! It was relatively easy to install, and it was inexpensive. Knob and tube wiring is common in houses built between 18. What Should I Do with the Old Knob and Tube Wiring?.What Are Your Options for Rewiring a Home with Plaster Walls?.Good luck with whichever option you choose! I think it'll come down to how much time and work you want to put in to fix it up or how much you're willing to pay a contractor to do all that for you. It was a PITA, took a little longer and more expensive but it got done right. Insulated all the outer walls and between ceiling / attic.Īpartment got done right and got top $$ for rent. There was no insulation in majority of the outer walls or between ceiling and attic. All that crap filled a 30 yard container. Redoing a 2 bedroom apartment on the 2nd floor, adding sheet rock on top of plaster, was a lot more weight going up on walls and ceiling, the old cracked crap was still there and just getting covered up.ĭecided to rip EVERYTHING out, walls, ceilings etc. When I do things, I like to do them right the 1st time and not worry about things. Got quotes from 4 contractors, 3 of the 4 recommended sheet rock over the plaster and ceilings. Touching it would fall and you could see lathing. Some rooms looked OK, other's not so much. ![]() Tenant passed and after all his stuff was cleared out, started surveying what needed to get done. I was in the same predicament about 2 years ago.Īn apartment we had a tenant in for many many years, was like walking into the 60's. Hope this helps you answer your initial question I'm no pro.but I've made many mistakes "fixing" my old house. You'll still break heads off & sometimes drive through the 1/4" sheet, but, all in all, much less often. Mark the stud locations, use 1-5/8" coarse screws and a driver with the clutch locked. you Can put 1/4" drywall directly to plaster. Using furring is often the fastest way to establish good, workable nailing surfaces, especially when using thin drywall.īut. This madness may explain some high estimates you're getting. ( set for a normal stud, the clutch disengages too early when driving into a dense stud - set for a dense stud, it drives the screwhead through the drywall before it disengages.) Let's skip focusing on the screwheads you break off and realize how inconsistent stud density plays havoc with drywall gun clutches. you discover that those 80-120 year old studs have dried to different densities, some being firm and many like iron. ~ Now you get smart and find & mark the actual studs and get rolling and feel great. ![]() Result :: numerous holes from backing out screws which didn't hold & sink splitting and not holding is a 50/50 chance. ~ As far as the old lathe under the plaster holding the screw & sinking. actually the screwing and getting the screw head dimpled into the drywall. problem with drywall over plaster centers on the screws. I found a wall where they put up firring over the horsehair followed by 3/8 drywall. ![]()
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