Saturday, November 25, 2017

Boxing in the Attic Stovepipe Revisited

While foaming under the kitchen cabinets and all around the last few spots with outside corners, I found myself with a part can of foam that I didn't want to waste.  Expanding foam canisters must always be thought of as "single use" items.

And so it was; I headed up to the attic without really having planned to do so.

I noted that the DAP foam that applied so dubiously earlier seemed to still be in the last position I had seen it, which was nice.  I added some new foam above it, and now delight in seeing four different colours of expanding foam, plus the blue of the closed cell foam, up in the attic.  It feels like I'm part of an experiment in testing the attributes of each manufacturer!

Blue, orange, white, yellow, a different orange - a real rainbow of foams!
I squirted a bit of foam in any crevice that I was unsure of, to help assuage my fears that things weren't completely sealed up there.

I did note that the temperature in the attic was quite cool actually.  I am thinking that this is a good thing?  It certainly wasn't freezing, but I am interpreting this as meaning that the stone wool I installed between the main cabin and the attic is slowing down the flow of heat upwards.  Also, sealing all these spots around the cabin is preventing cold air from convecting through so dramatically.  Last season the clear plastic I installed on the patio doors bowed in severely and was as turgid as some sort of tumescent dome!

While up there, I took the opportunity to remove my access foam and take some pictures from around the stovepipe.  Everything in there looks just fine.  I was really scared that I'd see scorch marks everywhere, but I could see nothing at all worrying.  Next time we have a really good fire chugging along, I think I should head up there with my non-contact thermometer and see how warm that cubby actually gets.

Whew!  Nothing scorched here, especially high up and close to the stovepipe.  Looking good!

And a view down makes me feel good too.  Everything looks fine here too.
That night we were burning some medium size logs that were performing much better than I am use to.  Instead of letting it burn out hotly and shutting things down for the night, I threw on an extra log and then shut down the air intake to just a crack (I'm still reluctant to go completely air-tight after last seasons troubles with back-puffing).

The next morning just after five a.m., I woke to a 16.5 degree cabin, and a few coals in the bottom of the stove!  That was quite exciting.  I am feeling much more comfortable about the stove so far this year.  As long as the wood supply lasts...

I still built a fire as normal, but it caught and got up to temperature in only a few minutes.  I feel that having a still-warm flue and firebox may have aided in the process.

At my age, after a loving wife and son, a warm cabin is one of the greatest things in life.

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