Metal roof flashing
We have used this item 3 times to seal up around 4 vent tubing for LP gas heaters. Ours is vented through the wall of metal buildings. We have used it over high ribs and on flat surfaces with an equally successful result either way. As with any product, think about the best way to install it in your given situation, realize it isn't a miracle in a box; and obviously if you see after an assessment of your situation it isn't the product you need; look for a product that is better suited for your particular need. It is a product that has worked very well for us and I can highly recommend.
Reviewed by: Charles Talbert from on 1/17/2014