Quote:
Originally Posted by jeff5may
... The quickest and easiest way to insulate your block walls is from within. Injecting foam into the hollow cavities inside the wall will increase the r-value to somewhere above 10, and you don't have to rip your siding off to do it. This will give you the most bang for the buck, especially if you DIY. It also will seal the block wall, killing infiltration issues. The stuff goes in like shaving cream and sets in 2 minutes. Plug up the holes you drilled and it's done.
Here is a site pitching their brand of the product. |
What, R10?? How? This is like taking a steel building and putting cavity insulation in it, you accomplish very little in regards to insulation. You fill up the insides of the cinder blocks and then the joining parts of the concrete still have full thermal conduction. You don't gain much here. What really should happen is there should be an insulating layer on either the outside or the inside of the concrete layer to be effective.