jkerich
Jul 22, 2018, 06:21 PM
I have been fixing nail pops in the ceiling of my girlfriend's townhouse and found that 3 of the beams are flexing causing my screws to crack the mud.A little background first, the house was built in 82 so the construction is not good to start with. The builder seems to have put up the ceiling first and then the interior walls. The truss structure is a 5 beam joint. One runs straight down from the roof, the 2 ceiling beams but up to it, and then there are 2 30 degree beams running up to the roof. There is a steel plate holding it all together on each side. It is prefabbed . The previous owner then stripped of the instillation off and screwed down 3/8 or 1/2 plywood from truss to truss (there are 2 of them per ceiling beam) down the center of the attic. The drywall is joining right under the truss. 2 of the pops are because the glue has failed so I can shoot in liquid nails under it and compress and screw them to fix the cracking problem. But the third is because the truss is flexing. I have cracking up to 2 feet around the truss. What I want to do is sister it to stop the flexing, shoot liquid nails under truss, sisters, and beam, and add a lot of screws running down the beam to hold the drywall.
My questions is, is this the right thing to do? I read the one hit for flexing ceiling so I think this is the way to do it. So assuming it is:
1. Should I sister one side using a 8 feet by 2 x 4 where the truss is in the middle or on both sides? The truss isn't cracked, but is is flexing because of all the weight.
2. The other post said nails or screws. Is that right? I want to use 4 inch screws.
3. I am planning to use liquid nails on sister beam(s) but how much is enough? How many screws should I do down the sister beam? 1 every foot, 2 foot? 1 row to 2 or more?
4. How many screws should I but into the sister(s) and beam to support the drywall ceiling? Since I am using liquid nails I am not sure if more is better. I was thinking 1 every 2 feet would be good enough.
5. Should I tape the crack areas or just mud it again? I think tape is correct but if the flex is fixed, do I need it?
My questions is, is this the right thing to do? I read the one hit for flexing ceiling so I think this is the way to do it. So assuming it is:
1. Should I sister one side using a 8 feet by 2 x 4 where the truss is in the middle or on both sides? The truss isn't cracked, but is is flexing because of all the weight.
2. The other post said nails or screws. Is that right? I want to use 4 inch screws.
3. I am planning to use liquid nails on sister beam(s) but how much is enough? How many screws should I do down the sister beam? 1 every foot, 2 foot? 1 row to 2 or more?
4. How many screws should I but into the sister(s) and beam to support the drywall ceiling? Since I am using liquid nails I am not sure if more is better. I was thinking 1 every 2 feet would be good enough.
5. Should I tape the crack areas or just mud it again? I think tape is correct but if the flex is fixed, do I need it?