Hi,
I just had a new shed built and there are gaps in the doorjamb next to the roll up doors.


The builder added some angle metal to block them but it's not a good seal.
Now, he's indicating he can use silicon seal to fill any remaining gaps.
My older shed has the the doorjamb cover trimmed to the shape of the concrete:

Seems the best approach is having a new doorjamb piece manufactured correctly but wanted to get thoughts from this community.
Has anyone else seen this problem on a new shed?
Awesome if you can send any photos I can use when discussing with the builder.
Thanks!!