Lighting equipment that is permanently installed in buildings need to meet specific standards to obtain
safety listings. Recessed luminaires (lighting fixtures can be divided into two classifications: ones that are
rated only for use with clear space around them and those that can be in partial or full contact with
building insulation). The latter are normally referred to as IC rated.
There are numerous luminaire types on the market that have been tested and are rated for use in contact
with insulation material utilized in building construction. However, the testing procedures and assumptions
of this rating are associated with blown-in or batting-type dry insulation. The insulation material which
covers the luminaire reduces heat flow from the luminaire that would normally be transferred to the
surrounding air. Equipment safety testing takes such reduced thermal flow into account during the testing
to achieve an IC rating.
The use of liquid spray-in place expanding foam has started to see application as another type of
insulation used in buildings in the past few years. Although it has excellent insulating capabilities, its
characteristics are markedly different than blown-in insulation.
The following information reviews practical aspects of applying spray foam insulation that may come into
contact with luminaires in various building applications.
| Number of Pages : | 5 |
| Published : | 11/22/2013 |
