Eps Vs Xps Under Siding

Xps products product features.

Eps vs xps under siding.

Xps comes unfaced or with a number of different plastic facings. Since eps is lower cost per inch than xps and is available in a range of compressive strengths from 10 to 60 psi using it belowgrade and under slabs can save on insulation costs. Extruded polystyrene xps easily recognized by its blue green or pink color xps falls in the middle of the three types of rigid foam insulation in both cost and r value about r 5 per inch. Neopor graphite polystyrene gps is highly efficient rigid foam insulation used in various remodeling and new construction applications such as behind new siding below grade and below slab.

Polystyrene insulations eps and xps provider k 031 course eps 104 1 lu hsw sd. O standard 25. However eps insulation has proven to perform just as well in such situations. Additionally eps is usually present in structured insulated panels.

O siding underlayment o pre cast wall panels. O expanded polystyrene eps is a durable rigid foam plastic material that is. Extruded polystyrene xps foam is a rigid insulation that s also formed with polystyrene polymer but manufactured using an extrusion process and is often manufactured with a distinctive color to identify product brand. Due to its physical properties xps has a higher r value than eps at 4 7 per inch.

Frank kiesecker has served as vice president sales and marketing architectural products for ach foam technologies since 2005. Expanded polystyrene eps foam is a closed cell insulation that s manufactured by expanding a polystyrene polymer. Ach foam technologies has made it easier for contractors and specifiers to see this with comparable features unavailable until now. Eps costs 10 to 30 less than xps per equivalent r value and compressive strength.

The appearance is typically a white foam plastic insulation material the likes of which can be found as merchandise packaging. However the blowing agents used in the manufacturing process were known to deplete overtime reducing the insulation value. In the past xps manufacturers were able to claim r values closer to 5 0 per inch.