<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>comparing insulation materials</TITLE>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 5.50.4134.100" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=150450918-04112002><FONT face=Arial color=#0000ff size=2>Thank
you Herbert, excellent material, any detailed source for conventional systems?
Thanks to Rene also. I persume gradually we will be able to compare
different systems. Anyone with more of such treasures?</FONT></SPAN></DIV>
<DIV><SPAN class=150450918-04112002><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=150450918-04112002><FONT face=Arial color=#0000ff size=2>Best
wishes, Martin</FONT></SPAN></DIV>
<BLOCKQUOTE>
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Oorspronkelijk bericht-----<BR><B>Van:</B>
strawbale-admin@amper....muni.cz
[mailto:strawbale-admin@amper....muni.cz]<B>Namens </B>Herbert
Gruber<BR><B>Verzonden:</B> maandag 4 november 2002 14:47<BR><B>Aan:</B>
strawbale@amper....muni.cz<BR><B>Onderwerp:</B> [Strawbale] comparing
insulation materials<BR><BR></FONT></DIV><TT>Dear Martin, dear balers<BR>I
tried to send this email to the GSBN-list, but I dont know, if I am still
listed, because it came back.<BR>So I do it this way, maybe its interesting
for the European list too.<BR><BR>Responding to your idea to compare common
building-products (insulation),<BR>here is our calculation based on <BR>*
prices from local building-markets<BR>* declarations and tests from
insulation-manufacturers<BR>* the values, Holger König (a well known
Baubiologist in Germany) describes in his books (e.g. "Das Dachgeschoß",
Ökobuch-Verlag)<BR>* added by the calculations concerning production energy
with the help of Gerd Zwieners book "Ökologisches Baustoff-Lexikon"
(C.F.Müller). <BR><BR>(European) terms: <BR>You know: Lambda L= W/mK describes
the amount of warmth going through a 1m thick material in 1 second per
squaremeter, when the temp-difference is 1°K (=1°C); the lower L is, the
better the insulation-capacity. L depends and differs with the amount of
waterdamp, which is in the material, so each organic material has to have a
20% addiction to<BR>LRTr10 (new after CEN = LNTr10): insulation value (Lambda)
for a dry (tr) material at a temperature of 10°C (for 1m, so L never depends
on thickness of wall)<BR>k-value (new after CEN: U-value): k= W/m2K
(Wärmedurchgangskoeffizient, dont know the english word), depends on the
thickness of the wall<BR>PEI: amount of energy to manufacture/transport/.. a
matarial<BR><BR>1) comparison of values<BR><BR>material
L
LRtr10
raw-weight
included
prod-energy<BR> (W/m2K)
kg/m3
(PEI:
kWh/m3)<BR><BR>strawbales 0,045 0,038
100
5-30<BR> (as
proved in our official tests in Austria)<BR><BR>cellulose
0,045 0,038
35-70
110-190<BR>(made
from 80% newspaper)<BR><BR>EPS-W15 0,038
0,038
15-30
400-1.050<BR>(polystyrol-plates:
XPS or EPS)<BR><BR>XPS
0,020-0,035
15-30
400-1.050<BR><BR>fibreglass
0,038 0,038
100
100-500<BR><BR>reed
0,045-55 0,039-45
225
?
(maybe same as SB)
<BR> (depending
on the amount of wire to hold it together)<BR><BR>flax-mat
0,045 0,038
150
?
(prob. 30-50)<BR>(Heraflax)<BR><BR>cork-plates 0,045
0,038
80
?
low, but long
<BR>(heat-expanded
cork)
transport-ways<BR><BR>cocos-mats
0,045-51 0,038-42
50-125
95<BR><BR>sheep-wool
0,045 0,038
100
5-50
depends on<BR>(Daemwool, washed and impregnated with Mitin)
transport to
wash<BR><BR><BR>Conclusion: energy-amortization-times of
insulation-materials:<BR><BR>strawbale, reed, cellulose: 0-1 month<BR>cork,
sheep-wool: -2 month (depending on transport-distances to manufacture/wash the
material)<BR>cocos-plates: 2-3 month<BR>fibreglass (mineral- or stonewool): 8
month<BR>polystyrol (EPS/XPS): 13- month<BR>polyurethan (PU): 17-18 month
(this is the ugly thing people spray between window- and
doorspaces)<BR><BR><BR>2) insulation-price per squaremeter and for 150m2
low-energy house (150m2 living space means ca. 400 m2 wall and roof), all
prices in EURO<BR>The following values are necessary to guarantee a wall with
U = 0,15 W/m2K (standard for well-insulated low-energy-houses in
Europe)<BR><BR>material LRTr10 thickness
of wall price/m2 for 150m2<BR><BR>strawbales
0,045 30 cm
3,6
1.453,
<BR><BR>cellulose 0,045
30 cm
18,3
7.326,<BR><BR>EPS-W15
0,038
24 cm
20,3
8.139,<BR><BR>fibreglass
0,038 24 cm
23,5
9.419,<BR><BR>reed
0,045
30 cm
25,6
10.232,<BR><BR>flax-mat
0,045
30 cm
51,
20.406,<BR><BR>cork-plates
0,045 30 cm
87,2
34.883,<BR><BR>cocos-mats
0,045 30 cm
144,6,
57.849,<BR><BR>sheep-wool 0,045
30 cm
163,5
65.406,<BR><BR>prices for materials
are from Austria and can differ with country.<BR><BR>You can combine 1) and
2), the conclusion will always be: strawbale and cellulose are the ideal
insulation-materials (even when you dont use more parameters than price only).
We have only problems in revitalisation of old buildings, where you cant use
these materials. <BR><BR>best wishes<BR>Herbert
Gruber<BR>-------------------------------<BR>asbn austrian strawbale
network<BR>herbert & astrid gruber<BR><FONT
color=#0000ff><U>http://www.baubiologie.at<BR></U></FONT>email: <FONT
color=#0000ff><U>asbn@aon...<BR></U></FONT>-------------------------------<BR><BR>>
Von: "Martin Oehlmann" <<FONT
color=#0000ff><U>martin.oehlmann@wxs...</U></FONT>><BR>> Antworten an:
"GSBN" <<FONT
color=#0000ff><U>GSBN@lists....com</U></FONT>><BR>> Datum:
Sun, 3 Nov 2002 19:34:51 +0100<BR>> An: "GSBN" <<FONT
color=#0000ff><U>GSBN@lists....com</U></FONT>><BR>> Betreff:
GSBN:<BR>> <BR>> Hi,<BR>> <BR>> We would like to compare
production energy and insulation values of regular<BR>> walls (for example:
brick + rockwool + cementelements, etc.) with sb-wall<BR>> systems. So far
as simple bale-builders we did gently overlook these<BR>> aspects, but are
challenged to respond.<BR>> <BR>> Any idea where to find a list of
specified common building materials<BR>> including consumed production
energy and insultion values???<BR>> <BR>> Thanks a lot,<BR>> <BR>>
Martin Oehlmann<BR>> Den Haag<BR>> 0031-70-3650410<BR>> <BR>>
<BR>> ----<BR>> For instructions on joining, leaving, or otherwise using
the GSBN list, send <BR>> email to <FONT
color=#0000ff><U>GSBN@lists....com</U></FONT> with HELP in the
SUBJECT line. <BR>> ----<BR>> <BR>>
</TT></BLOCKQUOTE></BODY></HTML>