Use stucco diamond mesh which is available at building material suppliers.
Sealing tile roof to keep out rats.
Seal your home roof rats can enter through openings as small as a nickel so be diligent sealing cracks and crevices.
Many of the areas are difficult to work on.
Rats can easily climb pipes rain spouts cables and other vertical objects where holes can provide an entrance to your home.
So you need to find the weak links in your home to prevent wildlife from entering.
Fix gaps in trailer skirtings and use flashing around the base of the house.
Use a heavy grade of steel wool copper mesh or metal scouring pads to fill cracks and holes in exterior walls.
If you seal them out of one area they will find another.
Rats may simply nest under the tile especially if the tile is shaded by a tree or has a northern exposure.
If you have mice rats or squirrels getting into your attic through a tile roof the situation is much more difficult than in a regular flat shingled roof and at times the problem can be impossible to fully address without major roof work.
This is one of the most difficult types of homes in which to solve the rat problem because it has a barrel tile roof and not just that a barrel tile roof with an open perimeter.
When sealing gaps at valleys ensuring proper water drainage is an issue.
On your roof seal off openings such as vent pipes.
They are named this because they spend 90 of their lives up off the ground in trees on power lines and more often than not because rats live in urban environments with people they are on the roof.
These materials can be found at your local hardware store.
Rats especially are very smart.
In fact the most common name for the species rattus rattus is the roof rat.
Caulk all exterior wall cracks.
The sub roof is usually made of plywood covered with layers of tar paper and its purpose is to make the roof water proof.
The only way to permanently get rid of rats is to seal off all of their entry holes.
On a properly built home with a tile roof the tile s main purpose is to keep the sun off the sub roof.
Metal cannot be inserted without removing tile and this much more involved than the cement technique.
Use lath screen or lath metal cement hardware cloth or metal sheeting to fix large holes.