Yes even flat roof to wall intersections are not being properly done.
How to seal roof to siding.
The dicor brand is a very common recommendation.
Here stone veneer is installed below the surface of the tile roof where freeze thaw cycles are tearing the mortar apart.
Simply apply this inexpensive filler into the cracks to seal.
A self leveling lap sealant will be used for the roof.
Although vinyl is impervious to water when installed as directed by the manufacturer vinyl siding as a whole is not completely watertight.
How to prevent water from flowing under vinyl siding.
There is one type for the siding and the other type for the roof.
See below for a shopping list and tools subscr.
You will need two types of sealant for a complete rv resealing.
This is messier than acrylic latex but effective.
What is a lap sealant.
This old house general contractor tom silva shows how to prevent water from leaking in behind vinyl siding.
Paint works well over it.
To tie the roof into the siding the tin roofing panels must first be installed to within 1 4 inch of the siding.
Step 7 seal larger gaps up to 1 2 inch wide with polyurethane caulk.
A lap sealant is a specially formulated sealant that works with rv roof materials.