I haven't come across a whole lot of information about this online, and opinions vary from pumping the whole duct system full of concrete, to putting spray foam in the ducts about a foot from each return and then filling the return with concrete in that small area so its capped off.Just curious if anyone has any experience with this, or has ever heard of a contractor talking about this, etc etc etc.Thanks!

Have spray foam insulated the basement to one of the buildings, and am looking to better insulate the actual living space of one of the units.

Have spray foam insulated the basement to one of the buildings, and am looking to better insulate the actual living space of one of the units.

I’ve got a couple buildings where they do, but have been spending extra on spray foam insulation in the basement where applicable to lower heating costs and improve cash flow in future years.

I did have the chain link fence spray painted block which made a surprisingly huge difference. 

I've never done this for a garage before, but I am renovating a house hack and am using spray foam insulation.

Spray painted it black and now it looks exponentially better and almost new. 

You can also poke holes in the drywall lid of the bottom unit and spray in insulation in each bay to help both reduce sound and help energy efficiency but you then also have drywall patch and paint on top of the insulation cost.

To sum it up, building right now is an uphill and costly venture with narrowing margins for the builder and extremely high purchase prices for newer energy-efficient construction.Great time to invest in the manufacturers of spray foam insulation, solar batteries, and start thinking about adding car charging ports to your existing MF properties if you can.

I had a guy come and take a look at it, he did 4 hours worth of work and ended up removing some drywall, killing the mold with a spray, and scrubbing the air.