<HTML><HEAD></HEAD>
<BODY dir=ltr>
<DIV dir=ltr>
<DIV style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial'; COLOR: #000000">
<DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>I
have returned to this great list for more good advice. </DIV></DIV>
<DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'> </DIV></DIV>
<DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>I
am thermally upgrading a small room that is a separate wing of the house to be
tighter. When I build new, I install continuous foam insulation to make
the house tight, definitely requiring active ventilation. In building that
is conventional where more than enough passive ventilation is present, not so
much need for active ventilation. Where the decision becomes more
difficult is when we incrementally improve the tightness, leaving portions of
the thermal envelope with the classic flaws. </DIV></DIV>
<DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'> </DIV></DIV>
<DIV align=left>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>In
this case, I am on a steep hill. The upper level has an open ventilated
space under it. This is a very small space. (8’x12’) with cathedral
ceiling. Therefore, almost all surfaces are exterior. I am upgrading
the North Wall with 3” rigid foam. I am installing 2” iso below the
ceiling with new ceiling panel. We are getting set to install mini split
heat pumps in three zones. My intention is to make a room that is super
efficient so my wife who is always cold (poor circulation) can elevate the
temperature to what ever she needs to achieve comfort (80F+) without requiring
the whole house to be that hot. I do not have the space to insulate the
floor. However, I was planning on putting building wrap under the carpet
pad to create the continuous air barrier. The South Wall has clearstory
windows above lower roof. This wall will remain with flaws.
</DIV></DIV>
<DIV align=left>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'> </DIV></DIV>
<DIV align=left>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>I
am currently heating with wood. However, we are wanting our photovoltaic
array to meet the new electric loads of the mini split heat pump. Though I
claim net zero emissions from burning wood where I harvest from fallen trees on
my land, producing heat with heat pump and home produced electricity, I am
lowering my carbon footprint significantly. Though the cycle for wood
sequestration and emissions is quite short, if I leave the wood on the ground it
will take a much longer time before decomposition eventually emits the
sequestered carbon. </DIV></DIV>
<DIV align=left>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'> </DIV></DIV>
<DIV align=left>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>Thanks
for reading my message. </DIV></DIV>
<DIV align=left>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'> </DIV></DIV>
<DIV align=left>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>Eli
</DIV></DIV></DIV></DIV></BODY></HTML>