air pockets under drywall tape

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Old 08-16-16, 08:23 PM
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air pockets under drywall tape

what should be the best approach to fix or repair air pockets which seem to appear after applying first layer coat or sheet of joint compound ? do i remove the sections of tape with air pockets or can I puncture the sections of tape with air below and squeeze out the air ?
 
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Old 08-16-16, 08:31 PM
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Cut them out with a utility knife and mud over them.
 
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Old 08-17-16, 01:04 AM
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Great thanks. One last question when repairing a patch of drywall should each layer be at least 3" further out then the previous layer ?
 
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Old 08-17-16, 03:26 AM
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It depends, you always want each successive coat to feather out further than the previous. 2"- 3" generally works well.
 
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Old 08-17-16, 03:37 AM
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@marksr thanks. One more question when applying additional coat or layer should each subsequent layer cover over entirely each layer below it and like you said spreading out an additional 2"-3" further than the previous layer ?
 
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Old 08-17-16, 03:45 AM
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Yes, you just want to make sure you don't apply the j/c too thick. The main reasons for a hump at the joint are the mud applied too thick and not feathered out far enough.
 
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Old 08-17-16, 03:55 AM
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@marksr thanks. another question if you have a 8" x 10" patch to replace. Where do you start when applying the first coat of joint compound ? Do you start slightly from the inside of the tape of one side or would you start on one one side but from the outside of the tape and for this size of patch repair would you cover the drywall paper sheet of the inside area (inside area between the taped sides) of the patch ?
 
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Old 08-17-16, 04:15 AM
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Normally you cover the entire joint with each pass. I normally tape with a 3" or 4" knife, apply the 2nd coat with a 6" knife and finish with 10" or 12" knife.
 
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Old 08-22-16, 08:10 PM
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@marksr thanks for the details.
 
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