Cellulose insulation has an R-value of R-3.2 to R-3.8 per inch. Deciding between several different types of insulation can be ...

It has a high R-value. Its resistant to water ... Here is everything you need to know about DIY spray foam insulation. Closed cell spray foam density is measured by weight. For example, a 12 ...

Just look for an efficient tub with good insulation, a sturdy cover and a dual-pump system. When shopping around for an efficient hot tub, look for a well-insulated model with a high R-value.