How To Fill Craks In Exterior Wood Before Painting?


To patch holes and depressions in siding of any kind, follow these steps:

  1. Clean the hole or depression you plan to fill. Roughen the area you want to patch with 80-grit sandpaper for a better bond.
  2. Fill the area with patching compound. …
  3. Allow the compound to harden and then sand it smooth.


  1. Purchase a filler compound that’s the same color as the wood. Look for crayon-shaped wood filler sticks or wood putty.
  2. Push the filler into the hole with your finger. If you’re using a filler stick, simply rub the stick over the crack.
  3. Overfill the crack with filler material. Continue applying filler until it comes out the top of the crack.
  4. Smooth the filler with a putty knife. Before the material dries on the wood, flatten it out as much as possible.
  5. Let the wood filler dry for 8 hours. The amount of time needed for the filler material to dry depends on the product, so check the label for the …
  6. Sand down the excess filler. Blend the cracked area with a plane or fine grit sandpaper. Aim for a sandpaper grit between 120 and 220.

Filling Holes and Cracks – Part 2 | Woodworking

Frequently Asked Questions

What is the best wood filler for outdoors?

10 Best Exterior Wood Fillers Reviewed:

  • Elmer's E892 Stainable Wood Filler. ...
  • Bondo Rotted Wood Restorer. ...
  • Elmer's Carpenter's Color Change Wood Filler. ...
  • Elmer's Product P9892 Probond Wood filler. ...
  • Minwax 42853000 Stainable Wood Filler. ...
  • Carpenter's Wood Filler. ...
  • DAP INC 18741 Platinum 16OZ Patch Filler.

How do you prepare cracked wood for painting?

With proper prep work, even damaged and weathered wood can be given new life with a fresh coat of paint....How to Prep Weathered Wood for Painting

  1. Step 1: Prepare the Surface. ...
  2. Step 2: Sand and Brush. ...
  3. Step 3: Apply Caulk Where Needed. ...
  4. Step 4: Wash It Down With a Hose. ...
  5. Step 5: Apply Primer.

What do professional painters use to fill nail holes?

Fill Nail Holes and Grooves Next, the painter will fill in all the holes and grooves in the wall with drywall compound. Drywall compound dries after the painter applies it, and most painters will apply two or three layers for all holes.

What's the best way to paint a crack in wood?

Apply a generous bead of waterproof, paintable caulk to every seam and crack in the exterior using a caulking gun. Wipe excess caulk using a clean, damp cloth. Allow the caulk to dry.

What kind of filler do you use for cracks in wood?

The best quality products are incredibly versatile. You can use them in four key ways: To fill holes and cracks – You need a thick filler to fill cracks and holes in wood. But you have to prepare the inside of the hole or crack first so the filler sticks properly.

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