Concept – Residential

General: Heat: Heat is transferred in 3 ways: , , and In summer, or, in hot climates, majority of heat transferring through building envelop in form of Radiation Heat.
Correct design, including suitable insulation selection improves inner , reduces energy spending and improves overall quality of users.

Polynum™ products were designed to block 97% of incoming radiation heat, using multi pure aluminum foil technology incorporated with low K air cavities.

In residential homes, correct roof and walls insulation design is critical to ensure proper energy saving, and comfort level. Regardless the roof or the walls (house envelop or fabric) Radiation is the main source for heat gain, and therefore must be controlled using suitable radiation proof (Polynum™) insulation. Being mostly unseen (most homes have plaster or drop ceiling), insulation must be , , and health friendly. With large verity to chose, Polynum™ is an excellent solution for your roof\walls and floor (when apply).

As heat buildup throughout the daytime, it needs to depart at evenings\night time via . Using Polynum™ solves additional common problems with bulk products, known as “Heat Lags”, which affects , and increase energy consumption!

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A direct flow of heat through a material, resulting from direct physical contact. Heat transferred by conduction is governed by the fundamental equation described by Fourier’s Law: (rate of heat flow) = k x (Area) x (Temperature Gradient). Thermal conductivity: The ability of an object to move heat from one part of itself to another part. The higher the K value (thermal conductivity value), the faster the heat will transfer along the substance. Air has very low K (thermal conductivity). Vacuum’s thermal conductivity equals to zero (such as in outer space). Heat conduction can not take place in vacuum! Polynum™ products make smart use of air and low K materials to minimize thermal conductivity and providing protection against thermal bridges between building elements.
Heat transfer by movement of air. Convection is the circulation of hot or warm air. As the air heats up, it becomes less dense, and rises. Cool air is then forced down and warmed by the heat source in a continuous cycle, or convection loop. The stiller the air is, the less heat transfer occurs through convection. Polynum™ products are totally airtight and effectively seals out wind. Its internal composition – trapped dry air bubble film and layers of steady trapped dry air – considerably reduces convection. Same as conduction heat, convection heat is not possible in vacuum. The different of temperature between hot and cold area is described as thermal gradient.

The flow of heat energy between two surfaces with no physical contact (I.R Radiation) Resistance to radiation measured by Emissivity (E). The lower the Emissivity value the better the resistance to radiation heat. The more the radiation is reflected, the less heat transfer occurs. Polynum™ two faces made of 99% pure High Resistance Aluminum give it a reflective power of 97%. Radiation is the only form of heat which transfers through vacuum!


Polynum™ products comply with most international fire and smoke standards for insulation materials. This includes: ASTM, DIN, M1, GB, AS/NZ, BS, JIS, EU, and many more. To learn more about Polynum™ fire compliances, please contact us or visit our products pages.
Polynum™ products are delivered with 7 (exposed) to 15 years (with ceiling) manufacture warranty. To download our warranty agreement please click here
Natural convection is a mechanism, or type of heat transport in which the air motion is not generated by any external source (like a pump, fan, suction device, etc.) but only by density differences in the air occurring due to temperature gradients. How Polynum™ assists to promote natural convection in industrial buildings?

Once sun is setting away, the ultimate source for heat transfer, Radiation, is fading away as well. As the ambient temperature starting to drop, building envelop (fabric) getting cooler pushing for convection loop, from the building out to the surrounding air.

Among others, in order to achieve optimal natural convection, there is a need to select suitable and correct insulation. Insulation materials, such as mineral wool, glass wool, or, thick foam known as “heat storage materials”, allowing heat-lags. The existence of heat-lags increase energy consumption and reduce level of comfort!

Being light weight with small mass to air ratio, Polynum™ does not hold heat, and will have minimal effect on convection heat evading the buildings. Many industrial buildings use production process which generates heat, or, emits heat (machinery). Such heat tends to evacuate the buildings via exchange of hot and cold air within the building. Polynum™ products promote lower air temperature as well as very small heat storage capacities. These factors encourage such convection reducing overall inner space temperature and increasing lever of comfort

A human thermal comfort is defined as the state of mind that expresses satisfaction with the surrounding environment (ASHRAE Standard 55). Maintaining thermal comfort for occupants of buildings or other enclosures is one of the important goals of HVAC design engineers. Thermal comfort is affected by heat conduction, convection, radiation, and level of perspiration (sweating), which affected by humidity. Thermal comfort is maintained when the heat generated by human metabolism is allowed to dissipate, thus maintaining thermal equilibrium with the surroundings. Any heat gain or loss beyond this generates a sensation of discomfort.