We’ve been busy installing our insulation in the Tiny House we are building. We went with a closed cell foam board insulation product that will have a high R-value and will also offer some extra structural reinforcing.
We wanted to have the house spray-foamed with 2 lb. foam, but alas, the price came in way too high ($1,600). We found this insulation on craigslist for $400 for the whole lot. A great deal, but we’ve spent three days installing it, which is a long time. It’s a very tedious process! First, we measure the wall cavity it needs to fit into…
Then we cut a piece from the 4′ x 8′ foam sheet using a special utility knife blade and a straight edge, then we insert the perfectly cut piece into the wall cavity. Each piece fits tightly between studs so we’re hammering them into place. This tight fit is where the structural support comes from.
After the foam insulation pieces are installed we seal up any gaps or cracks with a spray foam product…
Here are some photos of the interior with the foam board insulation installed…
I really wish I would have taken a picture before we cleaned up, the floor was covered with tiny bits of foam. The mess was driving us crazy so I was more focused on finding a broom than a camera when we finished yesterday.
Here’s a wall that is still waiting for a few pieces of insulation:
We have to cut each piece of foam to fit around the electrical wiring (visible in the photo above), which seems to be in most every wall cavity! I understand why soft, flexible fiberglass batt insulation is the conventional choice in the construction industry today. It’s light, flexible and pre-cut! But we are getting more insulation with the foam in the same wall thickness.
We’ve got an R-19 in the walls and an R-30 in the ceiling, which meets the current energy code, in Flagstaff anyway.
Next, we’ll finish installing the metal roofing and start on the interior drywall. which will feel so nice to get a finished material on the walls.
We have a deadline of mid-May because we gave our landlord notice that we’ll be moving out (of our 1400 sf rental house). So, we need to keep busy! And we need to try an off-load some of our stuff. It’s amazing how easy it is to acquire stuff… We have less than the average [american] person, but it’s still more than we’d like to have, and more than will fit into the new tiny house!
I’m excited to downsize and lighten the load. Me and my stuff have traveled almost 3,000 miles in the last ten years. Kind of ridiculous! From Fort Collins to Los Angeles, then Los Angeles to Denver, then Denver to Loveland, then Loveland to Prescott (via Santa Fe).
Phew. (thanks to my family and friends who have moved my stuff with me – multiple times… haha.) I just remembered one cross-town move in LA where I left food in the fridge… hey, why not? Well, the milk spilled and was leaking out the door into the U-haul. Haha! Gross.
Okay, hope all is well!