That close cell insulation sprayed directly on a dry metal roof will not trap any moisture at all. It sticks like paint would and there is no air pockets. Then the bottom seals itself. I had to put in a chimney on one of the roofs we had spray foamed. I had the piece I had cut out to fool with. I tried getting the foam off that piece. It was about impossible. You can not scrap it off a very wide section. I finally took a hand saw and cut across right beside the metal. Then with the foam only being a 1/4 thick I could scrap it off the metal.
My reason for seeing if it would come off was thinking if I ever had to replace the metal roof. So buy good metal as it will not come off.
A spin off I noticed right away was that it stiffened the building's roof structure. My shops both have a full six inches in the ceiling. They both have four inch purlins. So the foam completely covers them. When it is windy now the trusses do not move any at all. Before they would move some. I mean HIGH winds 50-60 MPH.
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
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