I put a new floor in a bathroom that was built over a concrete porch and just recently found that there is a crack in the concrete that is letting some air into the floor area and was wondering if there was a product or complete diy hack that would allow me to inject foam or something into the floor cavity to insulate those pipes further than the normal pipe insulation I put around them when I re-did the flooring. I realize and don’t mind drilling holes in the finished floor in to install , at this moment anything is better than redoing the floor to re-insulate everything. Please help.

I'd like to install some window film to protect my furniture and rugs from UV light and keep the apartment cooler, while still allowing a good amount of light through for my houseplants. I was told that 3M Prestige 70 would be a good choice for this. I've been unable to find this product online for sale. All I find are companies that will only sell it if you pay for installation as well, which gets ridiculously expensive. I can definitely make this a DIY project. I went on Amazon and found this stuff: [url=https://www.amazon.com/NSN70-Window-Transparent-Ultra-Rejection/dp/B00P009N58/ref=sr_1_2?dchild=1&keywords=prestige+70+3m&qid=1619576000&sr=8-2]WINDOW FILM[/url] Seems to have the same specs as the Prestige 70. But is it a quality product? Or is it something made in China that won't do what it claims to do? Anyone have any experience with this? Or perhaps know of an affordable source for authentic 3M window film? TIA!