Building thermal insulation is used to reduce the amount of power that is required to heat or cool a home and for minimizing the heat escape in winters and hot air penetration in summers. Building insulation tends to be the most cost-effective measure in climates that have a wide range of annual average temperatures. The insulation’s resistance to heat flow is measured or rated in terms of its thermal resistance or R-value. The higher the R-value, the higher will be heat resistance and lesser the heat will flow. In buildings that have thin walls or timber constructions, the impact of additional insulation is significant. Note: Core competencies of the companies are covered in terms of their key developments and key strategies adopted by them to sustain their position in the market.