Sealant recommendations for base of chimney chase/roof?

[PDutro]

This is looking pretty dried up and weathered. What product should I use to re-seal around the base of my chimney chase (after I remove the dried up old stuff)?

Same question for the space between the siding and trim boards?

 

[stoveliker]

I think that should not be sealed with anything,.it should have metal flashing.

 

[burning VC]

they make a product specifically for sealing flashing....Flash sealant.

But as Stoveliker said, you absolutely should install(missing/replacement) metal flashing and seal it to the chase.
All four side should have the flashing, where in your picture it resembles a 'top side strip' only?

Run a bead up that cracked seam too.

 

[EatenByLimestone]

You should have flashing below the wood and on top of the shingles. You want to have tge water drain away. Sealing the bottom of the wood will trap in the water and cause rot. Run a bead of paintable sealant up that vertical crack.

 

[PDutro]

You should have flashing below the wood and on top of the shingles. You want to have tge water drain away. Sealing the bottom of the wood will trap in the water and cause rot. Run a bead of paintable sealant up that vertical crack.

You should have flashing below the wood and on top of the shingles. You want to have tge water drain away. Sealing the bottom of the wood will trap in the water and cause rot. Run a bead of paintable sealant up that vertical crack.

I believe there is flashing (looks like black metal flashing, same material as the top and bottom, that runs under the shingles and the sealant is probably just to prevent water penetration under the shingles.

 

[stoveliker]

The flashing should be step flashing, draining between the two layers of shingles so that the water ends up on top of the shingles.