Bubble Insulation in Concrete
WHITE Single Bubble insulation is the ideal choice for insulating new concrete
floors against loss of heat. It can be used in conjunction with, or without,
radiant heat tubing to help keep floors warm. The product is to be laid
down with the FOIL side down towards the ground and WHITE side up over which
the radiant heat tubing and fresh concrete are to be applied.
The foil side is faced downwards
to eliminate the concrete from coming in contact with it which could cause the
foil to corrode due to the alkaline in the fresh concrete.
WHITE Double Bubble insulation used in a concrete
flooring application is stated to achieve an estimated R-Value of 1.1.
The Reflective Insulation Manufacturers Association consulted
a firm specializing in thermal performance to help explain
how reflective insulation works in a concrete slab application. Below
is a direct quote from this study:
"In order to more fully understand the influence of reflective
insulation materials in concrete floor systems, RIMA obtained the services
of a consulting firm specializing in thermal performance (R & D Services,
Inc.). Thermal efficiency calculations were used to generate an estimate
for a typical case involving reduction in heat loss for a common concrete
floor system. The calculation is based on steady-state thermal conditions
with an isothermal plane at the heating pipes and a plane between the gravel
and the ground.
The ground temperature was 55 degrees Fahrenheit, while
the temperature of the heating pipes was 125 degrees Fahrenheit. The calculation
assumes two inches of concrete (R-0.10) below the heating pipes, and five
inches of gravel (R-0.75). A reflective insulation material (R-1.10) is
located between the concrete and the gravel (the total thickness of the
concrete floor system is roughly nine inches).
The system R-value of R-1.95
reduces heat loss by 56%
when compared to the same concrete floor system without insulation.