Closed Cell Polystyrene Insulation
Open cell foam is full of cells that aren t completely encapsulated.
Closed cell polystyrene insulation. Each type is used in a variety of applications and under conditions where resistance to water and moisture is critical. Closed cell insulation is defined as insulation composed of small individual cells separated from each other. Owens corning foamular 250 extruded polystyrene xps rigid foam insulation is a closed cell highly moisture resistant rigid foam board well suited to meet the needs for a wide variety of residential and commercial construction applications. Polystyrene foam is a sturdy but lightweight foam that s very popular for personal projects like arts and crafts as well as for commercial uses like geotechnical filler in construction.
Kingspan insulation r 1 common. 0 25 in x 4 ft x 50 ft. Expanded polystyrene or xps extruded polystyrene or eps and polyisocyanurate or polyiso are the three main types of rigid closed cell insulation materials. The majority of insulation products used in remodeling and new construction are closed cell because they trap air for greater insulation value and do not easily absorb moisture.
The term flexible closed cell insulation materials further defines the range of products which can. Expanded polystyrene is very versatile because it can be molded and cut into different. In other words the cells are deliberatly left open. Choose this option for areas that need a good amount of strength and water resistance.
Some products have reinforced facing to make them sturdier. It provides r values that range from 3 6 to 4 2 per inch. Eps is made of 98 trapped air and only 2 plastic making it an efficient insulator with a small amount of raw material. Also called styrofoam insulation this is the least expensive material.
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. This makes the foam a softer more flexable material. Surprisingly strong eps s unique closed cell structure offers excellent resistance against moisture and water vapor and will not rot mold or mildew. Expanded polystyrene insulation more commonly referred to as eps is a closed cell insulation that has been around since the 1950 s.