When your roof absolutely, positively needs to be water-tight (and really, when does it not?), use Through the ROOF! Through the ROOF! is a seriously unique roofing caulk it can be applied in the rain. (No, were not kidding.) It sticks to wet surfaces, which means you can fix the leak while its leaking. Through the ROOF! will stick to almost any roofing surface metal, plastic, asphalt, wood, concrete, and more. Plus, it wont freeze. So go ahead and fix that gutter in a Minnesota winter. You might get some concerned stares from your neighbors, but theyll be grateful the next time you host a neighborhood party and their head stays dry.