DuraVent Ventinox Rigid Factory-Built Lining System - Manual (Page 10)

Figure 2
TherMix Field Benefits TherMix Ceramic Blankets
Zero-clearance to combustibles Yes Yes
Ease-of-installation Yes Yes
Difficulties with Offsets No Yes
Seals dangerous cracks and voids in chimneys Yes No
Eliminates air leakage into chimney Yes No
Eliminates moisture buildup between liner & chimney structure Yes No
Ships UPS/FedEx (Boxes Only) Yes Yes
Accepted by building code officials Yes Yes
Can be removed Yes Yes
Avoids reliance on respirator during installation Yes No
Eliminates the need for reflective surfaces to reduce heat transfer Yes No
Poured method means one size fits all insulation Yes No
Holds liner in place Yes No
WHEN USING THERMIX
There is no need to purchase spray adhesives, tapes,
wire, mesh, and/or sheet metal parts which add to the cost
and time to complete a job (Figure 2.)
•
TherMix can be used to insulate modular masonry
fireplaces.
• TherMix stays in place when installed but can be
easily removed. Dry weight per cubic foot installed
is ~20lbs.
TherMix is delivered in a strong poly-lined bag or
box containing all ingredients except water, which must
be added to moisten the material (Figure 3.) Proper
consistency is achieved when the material feels damp but
still granular (~7 to 9 gallons of water per bag/box). *When
a handful of properly moistened TherMix is squeezed hard,
little to no water appears between the fingers.
During the installation, correctly prepared TherMix pours
like “loose fill.” TherMix is distributed within the chimney
cavity by vibrating the liner. *Do not tamp or compress
TherMix.
Figure 3
VENTINOX LINING SYSTEM - 10