Plasterboard V-ing or peaking

Asked January 4, 2017, 3:53 AM EST

To the experts out there.
Peaking or v-ing of plasterboard along the joints of 2 platerboards.
Will this lead to cracking?
Is it worth to fix it if it doesnt lead to cracking?
Just an aesthetic problem?
Any other adverse effects i should know?

Outside United States

1 Response


Plasterboard peaking occurs in many areas for a variety of reasons. In most cases, the cause is either shrinkage or expansion of the dimensional framing lumber due to changes in temperature, humidity, or drying of the lumber. When this occurs, the lumber to which the plasterboard is attached may twist or bend. This puts the plasterboard in either compression or tension. In order to relieve these pressures, peaking occurs.

Another possible cause of peaking is if the plasterboard is attached to the studs without leaving a small space near the floor. If studs or the wall plates shrink, the floor will cause compression of the plasterboard, potentially leading to peaking.

Besides ensuring that dimensional lumber is free of bows or twists and kiln dried, it is important to allow ventilation in attics and other areas to prevent moisture buildup.

In some situations, peaking may lead to cracks, or it may not. It all depends on the pressures in play at that specific location.

If peaking is to be fixed, it is important to wait s long as possible to enure that further pressures on the plasterboard will not occur, this re-causing the peaking. Then, you can careful smooth down the peak until you reach the reinforcing tape. You can then fill both sides of the peak with light layers of joint compound, allowing to dry between each coat.

Hopefully this is helpful. Feel free to contact me if you have any other questions or concerns.