The cells are pressed together so air and mositure are unable to get inside the foam.
Open vs closed cell attic insulation.
Open cell foam is full of cells that aren t completely encapsulated.
Open cell has an r value of 3 7 and closed cell has an r value of 6 5 based per inch of installed spray foam.
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.
Closed cell foam can also increase the racking.
Closed cell is denser better insulating.
Architectural firms can specify both the building envelope for a total performance option.
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.
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.
Both icynene open cell and closed cell spray insulation are effective insulators with both working as barriers for air leakage.
R value is a critical part when comparing spray foam to other types of insulation.
In other words the cells are deliberatly left open.
However open cell and closed cell have their different uses.
Seems like you wouldnt want to seal something susceptible to mold growth but maybe thats just me.
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.
Closed cell foam is made up of cells that are as the name suggests completely closed.
Closed cell spray foam exterior applications.
The insulation is blown into the wall or attic one layer 1 at a time.