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Sherm
Drywall separates at wall/ceiling junction

My home is in the shape of a U. The two story portion is at the base of the U while the single story living room and garage form the arms of the U. The living room has a cathederal ceiling and there is no attic above. Where the drywall meets the drywall attached to the two story part of the house a substantial 1/4" gap opens in the winter and closes in the summer. Just filling the gap with spackle fails because it just falls out. Its ugly and needs a fix. Can you suggest somthing?

canuk
Re: Drywall separates at wall/ceiling junction

This is a common condition and can be simply taken care of by applying a moulding strip. This moulding can be attached to either the wall or ceiling to allow the moulding to float ( move ) --- hiding the crack.

jkirk
Re: Drywall separates at wall/ceiling junction

it also sounds like the joint was never properly taped.. meaning no paper tape in the joint

canuk is right though. putting up a molding will hide the gap as long as its big enough

Sherm
Re: Drywall separates at wall/ceiling junction

Actually the joint was taped long ago but the split has pulled the tape apart. The molding idea sounds great but doesn't that appear strange on a cathederal ceiling? Do you place the molding on the other walls as well? Also that molding would have to have an unusual angle.

jkirk
Re: Drywall separates at wall/ceiling junction

it can be done a couple of ways. my suggestion would be to do it as two mouldings that are built up.. using baseboard along the top of the wall then a bed moulding or chair rail that gets nailed to the base but runs up hard to the ceiling... the back edge of the upper molding will probably need to be cut off so it doesnt hit before the front face meets the drywall

the fact the ceiling is moving sounds like truss uplift which is typically caused by insufficient insulation in the attic space.. its caused by the temperature differences between the upper chord and bottom chord which will expand and contract at different rates

Timothy Miller
Re: Drywall separates at wall/ceiling junction

Howdy sure sounds like truss deflection cracking. !/4" pretty big crack... Are you in a snow area- loading on the roof in the winter? Expansive soils? Before adding trim might just add a good quality white silicone/ latex caulk into the separation wipe off any excess. Caulking the crack to allow for movement. Caulk expands and contracts with the movement. Drywall tape and mud does not.

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