transitioning from plaster to drywall

Im doing some repair and remodeling in a plaster and lathe home. Can I mud and tape dywall wall butted to a plaster wall? Also I need to fill some holes (some big ones) in the plaster on the exterior walls — the house is brick so the exterior walls have plaster over brick. Any advice on repairs (mareials etc) that will stand the test of time?
Thanks!
Replies
Pete, getting the new drywall close to the same plane with the plaster will help you in finishing. Where the plaster itself is 3/8's to 1/2", I will screw the new board (3/8's/1/2") to the lath. If it makes more sense to remove the lath, you might have to run furring to bring it to the right plane. If it's a new wall running into or extending a plaster wall, make sure the new wall is securely fastened to the frame of the plaster wall. Some like fibreglass tape, I use almost exclusively paper tape. I would use regular durabond dry mix to set the tape and fill any voids. Top coat with bucket mud. Often a good bonding agent (plasterweld)painted on the plaster will assure adhesion. On the exterior there are several products available. The appearance of the patch might decide which you should use. I have had good luck mixing my own mortar , using readymix mortar and even sand mix. Usually wet the surrounding areas so the water isn't sucked right outta the patch.
Remodeling Contractor just outside the Glass City.
Quittin' Time
Edited 7/13/2003 10:54:04 PM ET by calvin
I use durabond or what ever quick set the lumberyard sends me and float away without tape. AS long as I've shimmed out the drywall to the same thickness...or real close..as the plaster.....I haven't had any problems with cracking while not using tape.
having some 1/4 or 3/8th drywall around helps for the thickness.
for smaller transitions I'll just rip down some lumber on the table saw to fatten up the studs.
JeffBuck Construction Pittsburgh,PA
Fine Carpentery.....While U Waite