More Spray Foam

The roofers were supposed to start work yesterday, but when I got to the house, there was no sign of them -- or the stucco crew. Rob explained that the nails they needed hadn't arrived yet, but the roofers were scheduled to start at 9 am the next day. And even though it hadn't rained a drop, the stucco guys didn't want to risk the final coat getting wet. There's a lot of rain in our forecast, so it may be a while before they can put the finishing touches on our house.

There was plenty going on inside the house, though. Jim was building some shallow boxes out of scrap lumber. I asked him what they were for, and he, in turn, asked Rob. Rob explained that the roofers needed a way to install the roof tile around the solatube domes, so they were going to cut a circular solatube-shaped hole in the top of each box and place it around the base of the dome. They'll caulk around the circle to seal in the dome, and then put flashing around the edge of the box to keep water from leaking through before installing the tile around it.
Meanwhile, the spray foam crew had finished the second floor and had started working on the main level of the house (which is why Rob has a gas mask around his neck -- the fumes can get pretty strong). Upstairs, the foam had all been neatly sawed down so it was flush with the studs. This is the laundry room:
I noticed that the solatube openings in the bathroom ceiling had been foamed over. I asked Steve W. about this today and he explained that they would use the tube that runs from the dome to the ceiling to cut a hole back up to the opening in order to create a tight seal around the solatube. They covered the openings with cardboard before the spray foam was installed.
Back on the main level, the living room got foamed.
As did the family room.
They were able to make quicker work of the main level of the house because most of the ceiling areas were already covered with duct insulation, so they only had to do the exterior walls.

I asked Rob what kind of spray foam they were using, and he gave me some literature from the company. It is a BioBased closed-cell spray foam that is about 30% soybean oil. If you are interested in learning more about it, check out their FAQ.