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FLOOR PROTECTOR
Your wood stove should be placed on a non-combustible surface with a R value of 1.0. For
multiple layers, add R-values of each layer to determine the overall R-value. The floor
protector should be under the stove, eighteen inches beyond the front and eight inches
beyond each side of the fuel loading and ash removal opening. If there is a horizontal
section of chimney connector, the floor protector should go under it and two inches beyond
each side.
Convert specification to R-value:
k-factor is given with a required thickness (T) in inches: R=1/k x T
C-factor is given: R=1/C
Example:
If the floor protector is 4” brick with a C-factor of 1.25 over 1/8” mineral board with a
k factor of 0.29 the total R-value of the system is:
4” brick C=1.25, R=1/1.25=0.8
1/8” mineral board K=0.29, R=1/0.29 x 0.125=0.431
Total R = Rbrick + Rmineral = 0.8 + 0.431 = 1.231
Total R is greater than 1.0, the system is acceptable.
The floor protector should exceed the stove as follows:
FRONT
18’’
(460 mm)
SIDES
8’’
(200 mm)
BACK
8’’
(200 mm)
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