Insulation and soundproofing
Aerogel - Super Insulation for Windows and Walls
...U-factor explained
The performance of any insulation is measured by its resistance to heat flow. In North America (US and Canada), this is expressed as R-value (resistance). In the UK, Australia, New Zealand, and for fenestration globally, the inverse, the U-factor (or U-value, measuring heat transmission), is often us...
