If possible i intend to fill the cracks and seal the gaps.
Roof edge mortar repair.
Begin by removing the shingles down to the wood sheathing and slip a strip of adhesive ice and water barrier available where roofing repair products are sold under the soffit main roof joint.
Use a cold chisel and club hammer to get rid of worn out and damaged mortar.
You can get dry verge systems that replace the mortar with a sort of bend over edge in plastic or tile.
If there are repairs to be done on the roof replace worn out tiles and make sure the entire surface is covered.
Remove loose and worn out roofing material as well.
This is injected into the crack with the applicator and allowed to dry before being painted over if required.
Step 3 prepare the surface.
Although concrete tiled roofs are the most durable type of roof available they are still likely to break.
You can buy sealant in several colours to match the mortar if it is to be left unpainted.
By avoiding some typical mistakes you should be able to ensure that your home remains protected from the elements.
I would then probably coat the entire point with a waterproof seal.
Concrete tile roof repair can be a very challenging process.
Depending on how the roofs join you may have to cut a slot to work it in far enough.
Use a stiff brush and wipe away debris particles and dirt from the surface.