I have a good condition roof on a section of my house that was installed on an addition in the 70's. Originally, the area was simply the back porch but then was covered, and eventually enclosed for a greenhouse/outdoor area/hot tub, etc... We've lived here 5 years and every year it seems the situation worsens, regardless of what efforts we've taken to resolve. The bolts that hold the panels tight continually come loose, and the foam that appears to have been originally installed near where the roof meets the rest of the house is all but gone and/or too brittle to do much. We live in an area that experiences extreme temperature changes, drops to -40 for weeks in the dead of winter, has significant winds twice a year, and because of agriculture, we deal with a lot of dust/dirt flying through the air. I've tried tightening the bolts at least each Spring and Fall, caulking where the panels raise the most because the bolts can't take hold anymore, and I purchased a liquid sealant that is painted on, but have not used it yet. I'm at a loss.. The roof line is below the lowest portion of the roof on the house, where the two different sections meet, by 4" (the greenhouse/covered-enclosed porch and the original house), and I think this is where the majority of the water enters (it just blows up hill). And at this point, it's damaging the sheetrock in the interior. I can't find the "foam" stripping to replace anywhere online or locally. We live in a very rural area with few resources, especially professional services, so we're on our own. I'm at a loss.. thinking of installing a tarp if I can't figure out a better solution before the snow in a day or two.

I'm building a barn, and need some sort of flashing like the following picture depicts: While I'm not required to have termite protection, with how the foundation is made a continuous run of flashing like the "Metal termite shield" shown would be ideal to install. Some questions: 1) If I sandwich it between two sill gaskets, does it matter whether I use aluminum, copper, or galvanized? I'd prefer something that won't rust - so this leaves copper or aluminum. Copper is... expensive and overkill. But, if it will outlast aluminum (treated sill plate, poured concrete foundation wall) I'd go with it. 2) Can I bend this myself? I basically need a straight piece of flashing with a 45 degree bend on one end. I've looked at techniques online, but I want a clean appearance. I don't know where to get this locally (Home Depot? Lowes? Gutter company?). 3) How much do I overlap the ends and do I use a silicone product to seal the flashing to itself? Total linear feet - 110. Thanks! John