Siding holes can be filled with epoxy putty a two part adhesive of epoxy resin and hardening putty view example on amazon.
Repair hole in cedar siding.
Line up the ends and using the old piece as a guide mark the new clapboard with a utility knife.
For example the birds tend to prefer redwood and cedar siding over other woods and their activity is more frequently directed to stained wood than painted wood.
Work the putty down into the holes and smear the putty over the top and edges of the defect.
On a warm day mix the two materials with a putty knife then spread.
Scrape away any excess with the putty knife when you re done and allow it to air dry.
Repairing minor defects in cedar siding step 1 use a putty knife to apply exterior wood putty to smaller cracks or holes in siding.
Patch siding damage with the length and width of the removed sill cut two pieces of treated lumber that can be nailed together to achieve the thickness you need.
Epoxy putty is a commonly recommended wood filler for use in repairing woodpecker damage.
Use a putty knife to force the filler inside the hole making sure to fill in the hole and to completely cover the opening.
Place a full length piece of the damaged siding on the face of the replacement.
Score the cut line with the utility knife guided by a square.
Some homes are at greater risk than others.
Scoring prevents the wood from chipping when you cut it.
Fill the siding holes with wood filler.
Scrape all loose paint from around the area to be repaired using a paint scraper or putty knife.
Place the replacement sill into the hole images 1 and 2 fitting it in tightly with a sledgehammer.
Fill cracks in painted siding with either exterior acrylic latex caulk caulk or with epoxy wood filler which is a better choice.