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