How to Fill in Cracks in a Wood Wall With Plaster

Surface cracks originate on walls from different causes, including the effects of structural shifting. Cracks can also indicate more serious structural problems behind the walls. Once you repair any of the possible types of damage that is causing the cracks, turn your attention to getting rid of the cracks themselves. Fill in the cracks within a wood wall using plaster, which you can obtain from a local home improvement store.

Things You'll Need

• Putty knife/utility knife
• Damp rag
• Premixed putty paste
• 180-grit sandpaper

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Instructions

1. • 1

     Clean out any wood fragments or debris from the wall crack, using the edge of a putty knife or the blade of a utility knife.

   • 2

     Dampen a rag with water and wipe down the crack with the rag to remove any surface dust.

   • 3

     Fill the crack with a premixed, quick-setting plaster paste, using a putty knife.

   • 4

     Allow the paste time to dry, following the manufacturer's instructions. Lightly sand the repaired spot smooth, using 180-grit sandpaper.