GreenStar Panels - The World's Best Insulation


how it works

Radiant Barrier, Ventilation

GreenStar Panels are designed to protect the building envelope in 3 ways and keep the heat from ever entering your attic.

how it works

Radiant Heat Barrier

Aluminum reflects 97% of the sun’s radiant heat. But in the process the aluminum gets extremely hot. Touching a foil wrapped baked potato

how it works

Ventilation & Air Barrier

When the radiant barrier is properly insulated and ventilated, the surface temperature of the roof will not have time to heat up you attic.

how it works

Attic Insulation

The use of a radiant barrier with insulation keeps surface heat from transferring much slower. Heat will eventually transfer into the attic with enough time. Air does not transfer


Spray foam insulation is a great product. Homes insulated with it can be some of the most efficient and comfortable homes built. I’ve been in plenty of these homes and can tell you that when spray foam is installed properly, they outperform 99% of fiberglass batt-insulated, stick-built homes. (I can also tell you that 73% of all statistics are made up on the spot, so please don’t ask for documentation of that statistic.)

Spray foam comes in two flavors, open cell and closed cell, and provides both parts of the building envelope – the insulation and the air barrier. The building envelope should completely surround the conditioned space, and the insulation needs to be in contact with the air barrier. Since spray foam is both insulation and air barrier, proper alignment of insulation and air barrier is guaranteed.

What’s not guaranteed, however, is that all spray foam homes will be efficient and comfortable. I’ve seen a number of houses with problems even though they’re insulated with spray foam. In order of prevalence, here are the problems I’ve seen, with explanations following the list: