A timber frame cabin memoir

[caver]

The upper back and upper sides are not framed in yet. That rests on the loft floor. You can see that in the video.

 

[caver]

An insulation guy emailed me a bid after a few weeks. I assumed he had more pressing issues. The prices are approximate, $5900 walls, rim joists and one basement wall. I didn't specify that basement wall so would save a few bucks probably when I talk to him in the near future. This is closed cell 2" spray foam.

For $4300 more it would be a open cell product 5" same areas as discussed before.

If I don't go spray foam the other option would be self install rock wool. I hate fiberglass insulation.

I've only nailed down a few decks boards since winterizing my camper in early November. Staying in a motel is a pain but I can get a clean simple basic room off season for about 60-65$

 

[Carl_NH]

Does closed cell price include the roof @ 2" too? If so that's a great price then you can add supplement with rockwool.

I really like rockwool the more I work with it but getting the shell sealed up with 2" closed cell is key for structural integrity and eliminating air infiltration.

 

[dstig1]

Don't even think of open cell foam. It is vapor permeable and will cause you all sorts of moisture and eventually rot issues. It is only useful in certain situations but is tempting to a lot of people as it is a lot cheaper than closed cell since it expands a ton vs a little for closed cell. So when you say more $ for open cell, I am rather confused...

 

[ponytug]

@caver We just added some rock (mineral) wool, and I like it a lot better than fiberglass, both in terms of performance and working with it. It isn't nearly as itchy.

It comes in several densities; we used the highest density version to be able to nail it to one wall, and then attached furring strips to allow the second wall surface not to be highly thermal bridged to the first wall.

+1 on using closed cell foam. I'd never use open cell foam for all of the reasons that @dstig1 wrote.

All the best,

Peter

 

[caver]

Does closed cell price include the roof @ 2" too? If so that's a great price then you can add supplement with rockwool.

I really like rockwool the more I work with it but getting the shell sealed up with 2" closed cell is key for structural integrity and eliminating air infiltration.

Roof is insulated. It is built with what Legacy calls nail base panels. These are R39. I did some research last night and also found that closed cell is the way to go. Unless he made a mistake he quoted the closed cell way cheaper. I'll know more when I talk to him soon.

 

[EddieWalker]

In my opinion, open cell foam should be illegal in all homes and buildings. The only place it's any good is around window and door frames. From what I've read, it's already been banned in some European countries.