Drywall Over Rock Lath
Rock lath and plaster can be found in the walls and ceilings of many older commercial and residential buildings.
Drywall over rock lath. It was nailed up in sections that were 16 wide. Tap the nail heads holding the lath in place with a hammer to ensure that no nails are sticking out. Otherwise the screw will go straight through the drywall as it blows out the back drywall is strong against compression the paper surface only does so much to contain expansion.
Rocking over plaster and lath is very common as is busting out the plaster leaving the lath and rocking. So if you can t hit the lath with the screw and have a tight connection between the drywall lath and stud i d recommend against it. When combined with the lath framework beneath the lath.
Rock lath also referred to as gypsum lath or button board is a traditional base material used to support plaster. These sheets were applied to the wall in the same fashion as drywall. A typical lath and plaster wall required a minimum of three coats of plaster resulting in a dense rock hard coating nearly one inch thick.
Clean surface debris from the laths in preparation to hang the drywall. All the demo i have done in remodeling the sheets are were 3 8 thick and 16 tall by 4 ft. When all the rock lath is installed on the wall a brown coat or undercoat of plaster approximately 1 2 thick is applied to the rock lath.
Fwiw as an rrp certified professional i can tell you that yanking out the ceiling definitely would require the whole lead treatment routine and possibly may have to be treated as asbestos containing. Step 2 install the drywall panels horizontally starting at the top corner of the wall. The term for that drywall like product to my knowledge has been called rock lath.
Http www famouscontracting ca drywall over plaster and lath laminating drywall tapcons. The rock lath itself comes in sheets 16 x 48 and 1 2 thick. Plaster screws have a washer type fitting that helps prevent the plaster from.
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