4.So generally when we talk about wood types, cause this is not something I knew before writing the script today, we draw the line between hardwood and softwood.
6.A softwood window frame provides nearly 400 times as much insulation as a plain steel one of the same thickness and over a thousand times as much as an aluminium equivalent.
7.And so we have today the two basic types of trees – gymnosperms – the conifers also known as softwoods, and angiosperms, the flowering trees known as broadleafs or hardwoods.