I cut into the drywall and sprayed four cans of expanding foam in there.  

Lee S. Have

Originally posted by @Jeff S.:Have

It has 4" insulation on inside and 2" of foam board on the outside.

My normal HVAC contractor (they also do insulation) says we can spray foam the roof line to seal in attic and then one big system, with only one zone will be fine....negligible difference between up and down temp.  

General contractors or smaller builders would shave off costs, and you will have no maintenance on a new rental construction for a number of years. 

Use a foam paint brush or a sponge and just apply it to all the grout lines.  

David,One of your biggest problems with fixing up older homes in my part of TX is that a lot of the homes built in the 80's and early 90's have really narrow (like 24") doorways that enter the bathrooms, because of the configuration of the baths there is no easy way to accommodate the turn radius and entrance requirements for wheel chair access, so you will end up having to do a total gut on one of those properties.

So @Login George, yes, most of the duplexes, triplexes, and quads were built in the early 1900's. Having

A woman's 2 cents...a bench is awesome for shaving legs fyi.