-The ultimate solution is the installation of a capillary membrane.

I plugged in these rough numbers to the Rental Property Calculator here and the cash flow looked decent.I'd be looking to get a line of credit for the renovation budget and then do a cash-out refinance after 6 months.Renovation breakdown from realtorGarage - i would say put in anchor wall system and new membrane roof and new window altogether I'm thinking $4kYou'll want to tear down the plaster walls in the rooms upstairs and put up drywall: $6kYou'll probably want a new kitchen: $8k flooring appliances and cupboardsTear down of back garage and patio: $4kNew flooring and paint throughout: $5kbringing things up to code: $8kish?

Then the pour concrete over the membrane.

If the grout itself looks to be in pretty good condition (just dirty) then you have a few choices here...edited to add: if your shower floor leaks its not because of the grout....its because of the lack of membrane underneath the cement board or improperly installed drains...

After combining the weight of components (i.e. insulation, membrane, fasteners, and adhesive), typical installation weight is less than 2 pounds per square foot (10 kg per square meter) when .060" thick membrane (typically weighing 1/3 pound per square foot or 1.6 kg per square meter) is used.

I have seen people glue down hardwood on slab here in TX, personally I would never do it due to the moisture issues but you will probably get a few people saying it is ok.I would choose engineered wood floating on top of a pad with waterproof membrane (like the ones you use under laminate.

PVC or Hypalon single membrane systems are going to be your best bet.

Also a crack membrane should and could be used over the slab as insurance against small slab cracks.

As for Allure....we used it in a bathroom on the subfloor (over a water proof membrane) and a laundry room that was concrete slab.

Besides carpet, I am thinking Allure Ultra up here too as it seems to be flexible with the single membrane but would anyone else advise against that?