How To: Spackle Exterior Siding
Repainting your house? To ensure a smooth finish, spackle exterior siding wherever deep scratches and gouges appear in the wood.
When you’re repainting your house, here’s how to restore that smooth, original finish. After you’ve removed all loose paint and sealed the surface with a latex primer, use a water-based exterior-grade spackle to fill in the rough areas that remain. With a four-inch putty knife, spread an even layer of spackle and smooth it out. When it’s dry, lightly sand it and apply a second coat the same way, if necessary. When the surface is perfectly smooth, apply your finish coat.
For more on painting, consider:
Exterior Paint 101
Bob Vila Radio: Exterior Painting Prep
Exterior Painting Preparation (VIDEO)