Seal small cracks and gaps in your siding under 1 4 inch wide using an acrylic latex caulk.
Fill in gaps metal siding grooves.
This allows for the caulk to get in and fill the gap correctly.
Paint works well over it.
Should the size of the gap change refill it with.
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You can fill the gaps easily with rope.
Simply apply this inexpensive filler into the cracks to seal.
The natural movement of the boards could eventually break the material loose and make the problem worse.
Use around electrical outlets exterior pipes and window jambs.
The best filler for your siding is a two part epoxy product that cures to a rock hard consistency.
If the siding joint is so tight that the caulk only bridges the gap it may split again.
The best exterior caulk for blocking large pest holes.
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.