Yeah, not really gun related, but I know there are some plumbers on the forum, so I thought I'd throw this out for anyone who might have some ideas. I've recently been experiencing freeze-ups in both PVC vent pipes that penetrate the roof (a 4" and a 2"). In the past 3 days, they've both frozen over twice now and I can see ice chunks sticking out the top. Our roofline is about 26' above ground and kind of a scary pitch, so going up there (especially when there is a bit of snow/ice) really isn't my idea of fun. Are there any types of boots or something I could add to maybe prevent this from happening? When these freeze-ups occur, our house stinks of sewer gas. Going forward, would insulating these pipes in the unheated attic space help anything, or how about installing an upside down 'wye' adapter so I could possibly snake these vents from within the attic? Maybe even try some heat tape on the pipes in the attic (although that sounds like a potential fire hazard!!) Good ideas - bad? Obviously, this wouldn't be a permanent solution (I don't want to have to snake this out every couple of days necessarily), but would sure beat having to shimmy up onto the roof and pray I don't kill myself! Thanks for any insight!