I have a complex fascia consisting of a 1x4 over a 1x6 over a 2x8 in a stepped fashion. We have some rot issues in some locations. With one of the worst offenders, I had to replace a 16 foot area of fascia which was no easy task as the drip edge was nailed to the 1x4 through the osb roof sheathing and the corner bevel/miters were difficult to make perfect.
Elsewhere around the house, there are a few pieces rotted but none as bad, mostly either the 1x4 or the bottom of the 2x8 in max 2-4 foot sections. As I really don't want to replace all this wood I was thinking of doing a dutchman patch in these areas using my multitool to remove the rotted material.
However, I was wondering if there was some sort of putty I could use to fill rather large areas that are rotted after removing the rot. The material would have to be rather stiff so it could be formed rather deep (3/4 inch) and sticky so that it could adhere to the wood. I was thinking of kitty hair, however, other suggestions are welcome.
Spackle and wood filler wouldn't work.