Quadra-Fire VOYA-GRAND-MBK Owner's Manual page 33

R
. u i g er
eri
er u i i
ence from one side of the material to the other.
he L W R the k factor means less heat is being con-
ducted through the non-combustible material to the com-
bustible material beneath it.
he k value of a material must be e ual or smaller then the
re uired k value to be acceptable.
2
er e i e
he R value is a measure of a material s resisteance
to heat transfer.
R value is convenient when more than one material is
used since you can add the R values together, where-
as you can not do this for k value.
he R the R factor means less heat is being
conducted through the non-combustible material to
the combustible material beneath it.
he R value of a material must be e ual or larger then
the re uired R value to be acceptable.
er i g
Divide 1 by k and multiply the results times the thickness
in inches of the material.
R 1/k inches of thickness
er i g
Divide the inches of thickness by R.
k inches of thickness/R
u
a mple: loor protection re uires k value of 0. 4 and 3/4
inch thick.
thick.
Divide 0.6 by .75 k value of 0. 0. his k value is smaller
than 0. 4 and therefore is acceptable.
May 23, 2013
e F r r e i
ue
o
ue
-
-
7075-166C
er
Page 33