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ransley ransley is offline
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Default Determine R-value of existing insulation

On Aug 21, 8:57*pm, "Matt Williamson" wrote:
I have a family room in my house that is basically 3 outside walls. One wall
faces my uninsulated garage, another the side of my house and the back wall
is the back of my house with a florida room. The back wall also has a
woodburning fireplace. There is wood paneling lining all of the walls. The
room is very cold in the winter and I think more insulation would help. The
existing stuff looks very thin. It's maybe 2" thick and it looks like yellow
fiberglass type with foil backing. I'm ripping down the paneling and putting
up drywall and I'm trying to determine what the existing R-value is and what
I should add to make it a little better. I know the wood fireplace is a huge
air draft that just sucks heat out. I plan on putting in a gas insert to
make that more efficient. Here is a link to a couple of pics I took of the
insulation.http://mysite.verizon.net/vzev0tzm/id1.html*Click the thumbs to
get a full size pic. What would be my best option for this room? Can I just
add more over top of the old or should I replace it with something better
altogether?

TIA

Matt


It might be about R 10-12, minimum code might be R15 and optimal near
R 30, Best is R7" sprayed on foam for R 24 and no air leaks. The
fireplace is a looser up the chimney, I could not find a true sealing
door for under 1000 so I got a chimney cap that closes but still had
alot of cold air comming down. I took steel L channel and screwed it
to the frame, then R 14 foamboard and put on Magnetic Tape, I painted
foamboard to match and just remove it when I want a fire, just the
foamboard cover warmed the room noticably. Your room was designed to
minimal standards, you can redo it so you will save alot every month
heating and cooling it. Not all foam have the same R value, some are
R5"