"Eagle" wrote in
:

Tony Hwang explained on 12/28/2015 :
Boris wrote:
"Ralph Mowery" wrote in
:


"Boris" wrote in message
09.88...
I live in an elevated rancher built in 1978. I just removed
carpeting and linoleum from my breakfast room, kitchen, dining
room, and living room, all of which are open to each other. I had
3/4" red oak planking installed over the existing plywood
subfloor.

Winter season has come, and it has been unseasonalbly cold, and I
really notice it in the rooms mentioned above. I don't know if
it's because the wood transfers hot/cold more than what was on the
floors, or because of the really cold weather. I'm in the S.F.
Bay area, where winters are normally mild (40 - 50), and my
furnace usually heats the house fine, but now it takes an hour or
so to heat the house (20 year old gas heater, forced air, below in
the garage). When I wake in the morning, the house is 56 - 60, and
overnight temps were mid-30's to low 40's.

I'm considering insulating the crawlspace under the house, under
the new wood flooring. I have good access to all areas under the
new wood flooring, and to all exterior walls. I can walk under
the entire area. The floor joists are 2 x 10 (1 3/4 x 9), and the
wall studs are 2 x 4 (1 3/4 x 3 1/2). I've been reading a lot
about insulating crawlspaces, and some say just need to insulate
between all the joists, and others say best to insultate just
betwee the studs. Of course, doing just the studs would be much
easier, since it's doesn't have to be 'hung', and less expensive,
since the insulation wouldn't have to be as thick.

Any suggestions?

YOu did not mention the insulation over head. If it is less than
about 8 to 10 inches, start there. Then to the walls and last the
floors.. Do be sure that the vents under the house are closed so
the air does not just flow under it.




Over head? I think you mean what's in the attic...that blown in
pink stuff, lots of it. So much so that you have to clear it away
to find the ceiling joists.

I've closed up all the vents already.

I'd use rigid high density styrofoam panels between joists under
floor. You can use adhesive. Walls as well or batts.

We need insulated concrete here in Cali. It got down to 29 last night,
and is supposed to get down to 20 tonight.
My poor palm trees are going to freeze again!

Are you built on a concrete slab?