Posted by bison on July 07, 2019 at 14:30:07 from (208.114.129.101):
In Reply to: tin roof posted by 714_run on July 06, 2019 at 11:35:49:
My experience with 30 years of having metal roofs on my house barn and shop is that the metal expands and shrinks in the heat and cold and that continuous flexing over time causes the holes to get slotted and the screw does not cover the hole anymore or the rubber sealing washer breaks and disappears and/or the screws working loose with wind action, the longer the roof slope the worse it gets.Bigger sealing washers than what comes on the screws are not to be had anywhere.
Either way regardless of where you put the screws( on the flats still works the best) there will be leaks in a few years and it can't be avoided.
Metal roofs are certainly not fool proof no matter what the salesman claims.
I have to go on my roofs every year or so to replace screws that are gone or missing the rubber washer and I find plenty that have worked loose.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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