A reglazing of the tub with white acrylic will make the rust spots disappear and look brand new.

Sorry didn't see this was posted in the landlord section.. anyways - you can also get paint designed for shower areas, in acrylic.

(Acrylic, Cast iron, or?) 

Acrylic countertops?

Plus I got a quote for those "over the tub" fillers - where they put a new acrylic tub over the old one.

For example Sherwin-Williams "Duration Home" interior acrylic latex, 2 cts for drywall, 1 ct primer if brand new drywall. 

Hello,Well I'm stumped, and am a bit dumbfounded I'm not finding a clear solution to a cheap/affordable solution for a tub/shower surround in my current investment property.When demo'ing the bathroom, we pulled out an acrylic (5 or 6 piece) tub/shower surround, pulled out the old drywall, installed new Den Shield, and then planned to buy another acrylic type tub/shower liner/surround.

They look really terrible but we could not replace them :))) thanks god tub and walks are acrylic and theoretically I could easily replace them.

They also have lots of acrylic/melamine cups, wine glasses and plates which are unbreakable and would be great for a beach house or lake house where things are eaten outside.

In the mid 70's it became popular to start using acrylic plaster which is essentially acrylic paint with plaster mixed in as a thickener versus a bonding agent.