Most drywall cracks occur on the seams where two pieces of drywall meet.
What causes cracks in drywall seams.
Most drywall cracks occur on the seams where two pieces of drywall meet.
We have a crack at the long edge seam of the drywall in the ceiling.
When a crack appears it is usually on a seam where two drywall sheets meet and it is easily fixed.
The back to front dimension is 30 which means there are over 7 sheets of drywall.
The long edge is 19 long.
I installed the drywall in 2007 and the crack first appeared about 4 years ago.
Usually the seams are invisible due to the use of drywall mud and tape.
Usually the crack will be very straight because it is at the edge of the tape.
This article describes the common causes of all types of cracks that appear in drywall or gypsum board or plasterboard walls ceilings in building interiors.
One reason drywall cracks is because the wrong type of drywall mud was used when taping the seams.
Cracks that appear at the side of drywall joint tape used when mudding the joints between two pieces of drywall are often the result of two little joint compound being applied when taping and mudding the joints.
Illustrations show where cracks are most likely to appear explain why and suggest both repair approaches to drywall cracks and how to prevent cracking in plasterboard or gypsum board.
Straight cracks at taping joints.
Some drywall mud products are intended only for second or third coats.
Drywall cracks in ceilings or walls.
Additionally drywall cracks are often found where two pieces of drywall are butted together.
The mud fills in the seam and the tape covers it up.
Causes of drywall cracks.
Temperature fluctuations can cause the drywall to expand and contract creating stress that cracks the seams.
This occurs because there is a joint which gets drywall taped and then layered with two or three coats of drywall mud.
Here s how to determine the cause of your ceiling cracks and fix them.
Wall cracks are fairly common in both new and older homes and are often the result of normal house settling that can quickly inexpensively be remedied by re taping the joints the seams.
Some drywall mud has more adhering ability and should be used when taping drywall whereas other types of drywall mud should only be used in finishing.
If the crack is on a vertical or horizontal seam carefully widen the crack with the corner of a paint scraper utility knife or chisel to determine if the crack extends completely through the paper that is covering the seam image 1.
