One need to be very careful while choosing the underdeck insulation material as it will have an important bearing on efficiency of the insulation and also in enhancing the thermal resistance. It should be noted that roof alone accounts for approximately 40% to 50% of total heat gain and as such underdeck insulation material plays an important role in minimising the consumption of energy that is spent on cooling inner atmosphere. Such material should be very effective for sudden temperature change, particularly for hotter climate.
While selecting the underdeck insulation material care should be taken to ensure that there is enough vapour barrier to prevent moisture from roof entering the ceiling. It should be noted that different types of underdeck insulation materials offer different applications and benefits –while some are easier to apply, some of them are better retrofit due to their light weight. Various types of such insulation materials are made from cellulose filled insulation, structured insulation panels, polyethylene air bubble insulation, glass wool insulation, polystyrene insulation, rock wool insulation, natural wool insulation, foil thermal insulation and polyurethane foam insulation.
Supreme Industries offers INSUshield – FR, a non-fibrous, fire retardant (FR), closed-cell tri-dimensional chemically cross-linked polyethylene foam and INSUreflector – radiant barrier for underdeck insulation which have proved to be very effective in saving energy and temperature control. INSUshield is certified ‘Class O’ in Fire Propagation and ‘Class 1’ in Surface Spread of Flame as per BS 476 Part 6 & Part 7 respectively andis an ideal environment friendly insulation material. It is a better alternative to conventional Glass Wool insulation material.
On the other hand, INSUreflector is a radiant heat reflective insulation material made of polyethylene air bubble film (ABF) laminated with aluminum foil on one or both sides. The bright surface of the aluminum foil reflects 96–99% infra-red radiation received by the surface of a heated slate roof. Thus, it protects the building from undesirable heat gain.
Both the products are most effective, efficient and economical option to increase the thermal resistance and stopping unwanted temperature transmission of heat.