Sometimes the old caulk in the siding joint is cracked and you need to cut the old caulk out with a razor knife.
Fill in gaps metal siding grooves.
This allows for the caulk to get in and fill the gap correctly.
You can fill the gaps easily with rope.
Seal small cracks and gaps in your siding under 1 4 inch wide using an acrylic latex caulk.
1 scrape all loose paint from around the area to be repaired using a paint scraper or putty.
Paint works well over it.
The natural movement of the boards could eventually break the material loose and make the problem worse.
The best exterior caulk for blocking large pest holes.
The best filler for your siding is a two part epoxy product that cures to a rock hard consistency.
Use around electrical outlets exterior pipes and window jambs.
A polyurethane spray foam insulation that expands to fill larger gaps and holes.
Basically any crack on the exterior of the house should be filled.
Should the size of the gap change refill it with.
If the siding joint is so tight that the caulk only bridges the gap it may split again.