Mobile Home RV Flex Mend Belly Bottom Repair Kit-Fix Holes & Rips 48" x 14'

My travel trailer has a metal underbelly that has 3 foot section rusted out from water leakage, can this product be glued to the good metal?

Does the rv flex mend repair kit include both sizes 4"x44' and 48"x 14'?

Is the 48"x14' Flex Mend self-adhesive?

Does this product require a certain temperature for installation to ensure it will work properly?