The higher the R-value, the more the resistance and the better the material is at insulating a home. Generally, insulation materials with higher R-values cost more when compared to those with ...

It then came down to 0.82 from May 14 to May 30. The R-value was 0.78 from May 15 to June 26 and 0.88 from June 20 to July 7. In Kerala, the R-value is estimated to be around 1.10.