Hello everyone, I have a 100 year old home and am located in northern NJ. Two rooms on the side of our house are in a converted 3 season room (done by previous homeowner 25+ years ago) and the floor is very cold in the winter (the rest of the home is over a finished basement). There is open crawl space on 3 sides below these two rooms (sitting approx. 3 feet off ground) and there is old fiberglass insulation which is covered by plywood. I have already tried spray foaming any openings and seams in the plywood but this has not improved our situation. A few years ago I had a couple spray foam insulation companies come to take a look at our situation and provide an estimate, but did not move forward after one told me I was wasting my money and wouldn't see much improvement. I am now in the middle of redoing my deck and the contractor suggested enclosing the three exposed sides with cinder block and include one vent opening on the eastern side which we could close in the winter. When researching what to do it looks like he also should install a vapor barrier on the ground and sides of the cinder block inside the enclosed crawl space and told him I would want him to include this if we move forward (he said he never put the vapor barrier in before for similar jobs). He also said we do not need to change the insulation we have if enclosing. My questions are: 1. Will I get a noticeable improvement in the floor temperature of these two rooms like he is promising or am I wasting my money (going to cost me a few grand to do)? 2. Does the above sound like a sound plan or am I opening myself up to other issues in the future. If any steps are missing, what else should be done? 3. Am I better off trying to find a different spray foam insulation company? When researching it seems others have gotten positive results just doing this and not enclosing the crawl space. Attached is the layout of the first floor (playroom and family room are the two rooms over the crawl space) and a picture from the outside of two of the current openings. Plan also is to find a stone veneer to install in front of the cinder block on the two exposed sides to match the existing foundation. Thank you for your help!

I installed a stand up shower in my basement, no where to run a vent so it just steams into the basement and I open the window next to the shower and have a dehumidifier near it. is it okay to finish the small gaps between the wall and the shower or should I leave it exposed so condensation doesnt get trapped back there and mold? the cinder block walls were painted with drylock and sprayed over with a mold prevention spray but it will only last so long.