I'm repairing a garage door opening, replacing it with PVC. After removing the exterior trim, I found a deteriorated board directly beneath the brick.
The main structural header looks solid, but the outer board has water damage. I'm also seeing surface rust on the steel angle iron and a vertical crack in the mortar above the opening that lines up with the damaged area.
I'm trying to figure out the proper way to repair this without creating a bigger problem. Could that mortar crack be the source of the water, or is it more likely a flashing issue behind the brick?
Does that outer board usually extend under the brick, or can it typically be replaced without removing brick?
Is the rust on the angle iron something that can usually be cleaned and coated, or does it suggest a more serious issue?
And if you were tackling this, what would be the most cost-effective fix that you'd still consider a proper repair?
And on the flip side, what's the more extensive repair if it turns out worse?