Originally Posted by kwikfishron
"optimal results" are decided on a case by case basis.
This is very true...
But, the O.p. say's 1 layer of siding, not 2, not 3. And Mr. struble it's fan-fold foam, not 1" or other rigid dimensional product.
So, given those parameters (THE OP!) my recommendation is to place the flange at the sheathing. Recommend to them (FOR THE OP's CONDITIONS) your point of view. But, if you want to pick a fight about a window in some theoretical wall with a random assortment of materials, you're on your own...
Life's too short...so enjoy it!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.