We have a 50s ranch in Florida with a galvanized 11/2" vent pipe for the kitchen sink. The boot on the roof is shot, is there a boot still made to fit 11/2" pipe?

Hi Longrider...

You're in luck, home depot sells roof boots that accommodate 1.5"-3" pipe... see picture below.

Check out this link for more info.

Oatey 1.5 In. To 3 In. Thermoplastic All Flash No-Calk Roof Flashing - 11937 at The Home Depot (http://www.homedepot.com/Building-Materials-Roofing-Gutters-Roofing-Flashing/h_d1/N-5yc1vZ1xh3Zaqp7/R-100148990/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053)

Mark

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Mark gave you one. Here's another, (see image) check it out at:
1/2" to 2" Conical TPO Plumbing Boot (1) (http://www.bestmaterials.com/detail.aspx?ID=17200)
Good luck, Tom