Tape Separating from Drywall
In order to join two sheets of drywall together tape must be placed over the seam first before applying the joint compound or "mud". This will reinforce the joints and allows the "mud" to do it's work. So what other reason than poor craftsmanship could cause the tape to separate from the drywall? The answer - MOISTURE! Whether it is a direct leak or just excessive moisture in the air the tape will come loose and pull away from the drywall. Before you call your contractor with complaints of shoddy workmanship take a look at what else is going on in the room the separating is occurring.
Check Around Window Sills
This is the underneath of the window sill. Separating and discoloration has begun due to moisture.
Roof Window in Cambridge, MD
This manual roof window appears to be the main culprit in this room. The large gap all around the edge is letting in a lot of moisture. Notice how the drywall surrounding it has begun to crumble. Air sealing the windows and any other cracks in this room will prevent an excessive amount of moisture to enter the room. This will prevent the new drywall tape from peeling. If air sealing is not done in this room, no matter how many times they re-tape the drywall it will continue to peel away.
