How to Repair a Crack on a Wood Surface

Repaired Cracked Wood Repaired Cracked Wood

Now is the time to repair the cracks in your wood siding. Before you apply a fresh coat of paint, make sure your surfaces are in good condition.

For Best Results:

Follow our how-to for the proper steps to repairing cracks in your wood exterior.

Suggested Tools & Supplies
  • 5-in-1 Tool
  • Vinyl Gloves
  • Ladder
  • Patching Material
  • Protective Apparel
  • Putty Knife
  • Rags
  • Sandpaper
  • Step 1

    Using 80 to 100-grit sandpaper, remove any loose debris from the cracked area.

    Tip: Use a 5-in-1 painter's tool to widen cracks that are less than ¼" wide. This will remove the paint and other debris from the cracks and will allow the patching material to bond tightly to the damaged area.

  • Step 2

    Using 100-grit sandpaper, lightly sand any raised or rough areas. Remove any dust or debris from the area with a lightly water-dampened rag.

  • Step 3

    Using a putty knife, spread a thin layer of patching material into the cracked area. Allow it to dry.

    Tip: To create an even surface, always smooth out (feather) the patching material 1"-2" beyond the repaired area.

  • Step 4

    Use 220-grit sandpaper to smooth the patched area and make it even with the surface.

    Tip: If shrinking of the patching material occurs, lightly sand and clean the area and apply additional layers of patching material as needed.

  • Step 5

    Remove any final dust or debris from the finished repair.

ADDITIONAL RESOURCES
Orange calculator icon in a white bubble

PAINT AND STAIN CALCULATOR

Inside or outside; paint or stain: Let’s figure out how much you’ll need to make amazing happen.

Calculate

ASK AN EXPERT

Every project is unique: Keep small wrinkles from becoming big problems by letting the Behr Technical Experts lend a hand.

Get Expert Help

CONNECT WITH PRO REFERRAL - POWERED BY THE HOME DEPOT

Let Pro Referral do the leg work and match you with quality local painters.

Find a Painter
CUSTOMIZE & BUY
Tahitian sky
Small Behr logoS480-5
Compare
BLACK
BLACK
What sheen do I need?
8 Oz. Sample
1 Gallon
1 Quart
5 Gallon
The following product(s) is required to properly prep and pre-treat wood prior to any stain project.
Required product
BEHR PREMIUM ALL-IN-ONE WOOD CCCC
$0.00
The following product(s) is required to properly prep and pre-treat wood prior to any stain project. Only available in store at Home Depot.
Required 3rd party product
BEHR PREMIUM ALL-IN-ONE WOOD CCCC
The 9 in. x 1/4 in. Polyester Adhesive Roller Cover has a hard texture, making it ideal for applying all types of adhesives to smooth surfaces. It can be used for stippling and applying sand paints.
The following product(s) is recommended when stripping is needed.
$0.00
The Home Depot logoSold Exclusively at The Home Depot