|Crawlspace insulation under enclosed porch|
The current project on the perpetual house (perpetual building mode, that is) is insulating the crawlspace. Anything in a crawlspace is a pain, but insulating in a crawlspace is particularly painful - insulation in your eyes, breathing insulation, insulation on your skin, etc, etc. I wear a mask, glasses and a Tyvek suit to make it a little less onerous.
We are doing this ourselves because we can and our labor is free. We is me and Rich, my brother-in-law. Also I believe that no one else will do the same quality work. I don't know that to be true, but I suspect it is true based on the insulation work I've seen done in the past by others and the fact that no one else cares as much as I do and no one else is as willing to do this painful job as I am.
Ok, so here is the plan for insulating under the porch - the floor joists are 8" which works out to a 7.5" space for insulation. I have 2 different kinds of insulation that could be used for this area: -
5.5" Roxul mineral wool insulation which is listed as R-23
2" Roxul Rockboard insulation (about R-8).
For the 7.5" space, we installed the 5.5" Roxul first and the 2" Rockboard to finish filling up the joist bay. The 5.5' Roxul batts were easy to apply, but the 2 ft wide Rockboard was a pain. We had to cut it to fit each of the floor bays which ranged from 21" to 23" wide. Then we had to wedge that stuff in. It was awful. I don't find Roxul to be as horribly itchy as fiberglass, but it does aggravate me, especially when I have to wedge it in with my shoulder and the stuff is going down my neck. Some of it was a little loose so we put strapping across it to hold it until I install the DA vapor permeable membrane from 475 Building Supply.
|Larger view of the crawlspace insulation under the enclosed porch. Strapping is to hold it in place until the DA vapor permeable membrane is installed by stapling it to the floor joists.|
|A little dead bat. I keep meaning to take it down, but I really don't want to touch it even with gloves on.|
Well, that's where we are today. I am off tomorrow so I will work on insulating the rest of the floor under the house. It is forecasted to be a tiny bit cooler tomorrow - in other words, it is not supposed to reach 90 tomorrow. Little blessings. Thank you for reading.