I am trying to find a sectional detail showing the best method of installing crown molding at the roof/ facia junction WITHOUT using prefab metal drip edge. The drip edge will be a piece of beveled cedar siding projecting just past the face of the crown and bearing tight to the top of the crown. This means the 5/8″ OSB roof sheathing must butt to the back of the crown mold. I know they had a way of doing this a hundred years ago as there are many old homes nearby with no metal drip edge.
This is new contruction w a 12 pitch.
Thanks for any ideas.
Replies
fascia/crown
First, they didn't have 5/8" osb a 100 years ago. :-) And second, I'm not sure that the decking was ever attached to the back of the crown back then. At least I have not seen it.
On my 85 year old house, the decking is 1x plank and extends over the crown with the shingles extending beyond the decking.
I suppose you could bevel the osb decking to match the bevel of the crown. Don't know about nailing into the edge of the osb. Would make sure that NO moisture could get to the edge osb.
Or run a course of1x plank/decking at the fascia with the crown below decking.
dont know where you are but here all roofs are now required to have drip edge. to attempt this would require a few things. the first would require the inspector to be in a good mood, second would be to convince the inspesctor that your proposed method is at least as equally effective as drip edge, and you would also have to more than likely change your inspectors interpretation of what constitutes drip edge.
it sounds like something you would not want to retrofit, so making your buildout and detail would more than likely need to be done prior to the shingles (or whatever material your using) goes down.
crown to fascia
Thanks Finefinish, that's how we are doing it! Only concern now is potential damage to crown from roofing crew :-)