Hello again, With the new A/C up top I would like to seal the roof asap. There are no leaks but the thick silver color sealant seems loose in spots and is at least 10yrs old. I would like a "White" Sealant ?? Should I scrape the old stuff off?? Whats the best stuff. Rino liner wants 2K to spray it.

Do a search on the site for Anvil 400 or 450. Sherwin williams special order. $35 gallon
Tere