When it comes to insulating a home whether that s a roof insulation or floor insulation it is ideal to use icynene open cell spray foam.
Open vs closed cell attic insulation.
Insulating value and strength open cell foam has an r value of about 3 5 to 3 7 per inch while closed cell foam has an r value of about 6 per inch.
Closed cell is denser better insulating.
When applied on the interior open cell spray insulation provides performance advantages that differ from those of closed cell spray foam used on the exterior.
This makes the foam a softer more flexable material.
R value is a critical part when comparing spray foam to other types of insulation.
Closed cell foam is made up of cells that are as the name suggests completely closed.
Closed cell foam can also increase the racking.
Architectural firms can specify both the building envelope for a total performance option.
Seems like you wouldnt want to seal something susceptible to mold growth but maybe thats just me.
Closed cell spray foam exterior applications.
The insulation is blown into the wall or attic one layer 1 at a time.
Open cell is more susceptible to mold and mildew but its expanding so it can hermetically seal an area.
However open cell and closed cell have their different uses.
A spray insulation is referred to open cell or closed cell because of the difference between the small bubbles cells that make up the foam.
Id go with closed cell.
The cells are pressed together so air and mositure are unable to get inside the foam.
Both icynene open cell and closed cell spray insulation are effective insulators with both working as barriers for air leakage.