How to Repair a Cracked Seam (Video)

Use your spackle blade handle to flatten the cracked seam, which provides a flat surface on which to work.

Use your spackle blade to scrape the surface, removing debris and smoothing out the surface.

Apply mesh tape to cracked seam.

Apply 20-minute spackle with your spackle blade. Let it dry for 20 minutes, then repeat this step two more times. By applying a total of three coats of spackle, you ensure that the damaged area is properly repaired.

Sand the area with a sanding block. You may sand the edges thoroughly, but sand the seam lightly, so as not to sand off your repair.

Now you are ready to paint. Use a paint brush to paint any edges or corners in your working area, and use a roller to paint larger areas. When using a roller, do not roll in one line only; instead, feather out the paint, so it will blend with the existing paint nicely.