In the old days the builder would install the trim bring the siding up to it and caulk the corner.
Fill big gaps in siding.
If no footing i would dig down about 12 inches and use a galvanized or heavy plastic mesh to prevent boring animals from digging through then back fill the hole to a level above the gaps on the stucco tapering the ground away from the house.
Remove all old caulk from the joint to be filled.
Vertical trim gap caulking.
The best filler for your siding is a two part epoxy product that cures to a rock hard consistency.
Plastic landscape paper would also help here.
Two part epoxy two part epoxy is one of the top choices for patching large holes.
Trim boards that sit on top the siding.
Measure the size of the gap that needs to be filled.
Fill larger gaps with foam.
Wet your finger and gently wipe the caulk in the gap to give it a smooth rounded appearance.
1 scrape all loose paint from around the area to be repaired using a paint scraper or putty.
Take the time before you apply any paint on your next project to fill all of the gaps cracks and nail holes.
Nail holes in exterior surfaces just as with cracks or gaps can be dealt with using a good caulking.
Do not caulk between siding and any built in receiving channels located at or around windows.
Most caulk can be scraped away with a putty knife and sharp.
A single bead of caulk can fill gaps up to 1 4 inch.
Leave a 1 8 gap between the siding and the trim or other materials to allow for structural movement.
Wipe away any excess caulk.
How to caulk a large gap step 1.
Always caulk between the siding and the trim.
Holes in wood trim are best filled with wood filler.
The two parts are mixed like dough and can be shaped before or after it dries.