Cracks!!!!!!!!!!!

Boogga

How do you stop/prevent cracking of internal cornice joints?

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"It's better to die on your feet than to live on your knees"

Brockster

Are you talking about the inside corners are cracking? If so caulk them.

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Frankawitz

There should have been some mesh or burlap cast into the cornice, But what is a internal cornice joint? I have never heard that one before,

Tim0282

Kind of like the intestine of the cornice??? Small or large? Small, use a small tube of caulking, large, use a big ol' tube of caulking. Throw in a little deer urine to make the caulking stick better to the cornice.

kgphoto

Use X-Crack by Strait-Flex

Kiwiman

Repair cracks in old cornice? or prevent cracks in newly fitted cornice? if it's new cornice joints cracking a day or two after fitting then try wiping/blowing the dust off the cut before glueing, or it could be glue drying too quick. If it's cracks in old cornice then turn a blind eye and say thats the painters job .

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How much mud could a mud chucker chuck if a mud chucker could chuck mud.

Boogga

I was talking about new internal cornice joints.

Even if you dust off the joints before glueing etc, the dust will again appear. Try this..... dust off as you say really well, and then with your finger wipe it along the cut joint and the white chalky dust with easily reappear.

What caulking do you use then? Usually a general caulking will not stick to a dusty surface.

So what is..... X-Crack by Strait-Flex???? Is this a caulk or glue?

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"It's better to die on your feet than to live on your knees"

Brockster

Prime first, then magic caulk.

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kgphoto

Wipe with wet sponge, allow to dry, then prime, then caulk.

Post a picture so we can all understand what you are talking about re: "cornice joint."

X-Crack is a material used under drywall to absorb movement and prevent it from transferring to the drywall joint.

htmlwerty

I had the same when homeowner did not turn heater on

Frankawitz

boogga, what is the cornice made of plaster or wood? if it's plaster use Durabond 20 and apply it with a grout bag squit it in the joint then press the two pieces together as you press them together the mud should sweeze out let it set uo then carve the mud should be fine if it's wood wipe do with denatued alcohol then caulk,

terry714_us

Flexible caulk works

Brockster

Bestest answer yet! Don't use non-flexible caulk to fix a crack seeings how something's already moving.

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adoggyadog

the best way to prevent cracking is to tape properly. never apply too much mud within the inside corners. use proper flushers for every coat. first coat use a 2 inch applicator. second coat use a 3 or 4 inch applicator. If one applies too much mud within the inside corners, your almost certain to get cracks. never over heat the compound or this may corupt the finish result, resulting in cracks. allow the compound to dry in resonable conditions. always use the same brand of mud for the same coats. i have used hamilton finishing for the first coat and sinko for the last and found out that sanding the compounds may result in an undisired effect.