All it takes is backer rod and concrete flex sealant.
Seal gap between siding concrete block.
It works perfectly as a concrete expansion joint sealant.
I am going to assume that you have a concrete patio which has a small gap where it meets the house foundation.
The best solution here may be to clean up that area of all debris let it be fully dry and then apply a bead of qood quality exterior grade caulking material.
Another option is metal step flashing.
Since some of the siding looks like it will need re priming and painting make sure that you use a paintable type of caulk.
How to seal and fix a gap between foundation and concrete sidewalk or patio.
The right profile of flashing could block off the gap and make sure any water is directed back out at the.
How to seal siding to keep out mice.
Find the entrances mice use to enter your home.
Look under the siding at the area meeting the foundation of your home for holes and gaps.
The urethane caulk sealants were developed for the joints between the panels in concrete tilt up construction.
Crawl around the exterior of your home and use a flashlight to find cracks holes and gaps.
In this case what i would use is a polyurethane caulk made for masonry like this one.
Use a small.
Loctite pl10 often the gap to be filled is quite deep.
They are typically mechanically robust adhere extremely well to almost everything especially wood and concrete and are stretchy enough for seasonal building movement.
To prevent further water damage install closed cell backer rod in the gap between the patio and house foundation and cover it with concrete crack sealant.
In that case the use of backer rod before caulking is recommended.
Snip the opening of the tube at a 30 degree angle making the opening the same size as your gap.
Fill the crack with urethane caulk similar to what you would use for driveway caulk.
Note that there are various types of caulk.