I have a cracked corner of fascia where two fiber cement boards meet. How would I go about fixing this? I tried "DAP Platinum Patch" spackling compound, just to find out that it's supposed to only cover minor cracks up to 1/8" deep.
I feel like this corner needs to be filled with something. What should I use?
If you want a crisp corner, treat it like a plastering [spackle?] task but using exterior-grade filler.
Square off the corner by using a piece of exterior angle-bead held in place by a couple of dollops of your filler [knock it back a little if you need, to bed it properly], then smooth finish afterwards, leaving the metal edge as your visible corner. Paint as desired.
Done like this it will even be slightly resistant to a little movement afterwards [but not a lot].
Examples of various bead types from UK trade store. I don't know if the US uses the same naming conventions.
