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, we’re not kidding.) It sticks to wet surfaces, which means you can fix the leak while it’s leaking. Through the ROOF! will stick to almost any roofing surface - metal, plastic, asphalt, wood, concrete, and more. Plus, it won’t freeze.