What is EPS?
Expanded polystyrene (EPS) is an innovative, high-performance building material engineered to deliver long-term, reliable energy efficiency. EPS insulation is ideal for green building design, offering numerous environmental advantages, including reduced energy consumption, recycled content, localized distribution, and improved indoor air quality.
Applications
Foundations
EPS insulation provides dependable, long-term performance for interior and exterior foundation applications. Its closed-cell structure results in minimal water absorption and moderate vapor permanence. Density, strength, and thickness can be specified to meet compressive loading forces and thermal resistance requirements.
- Sub-Slab Insulation
- Exterior Perimeter Foundation Walls
- Interior Foundation Walls
Walls/Ceilings/Floors
Versatility, lasting value, and performance make EPS insulation ideal for a variety of wall, ceiling, and floor applications that substantially increase the thermal efficiency of the building structure.
- Walls & Ceilings
- Exterior Insulation Finish Systems (EIFS)
- Exterior Sheathing/Underlayment
Roofing
Roofing systems using EPS can meet the most demanding building requirements. EPS insulation is compatible with all commercial roofing systems, including but not limited to built-up roofing and modified bitumen systems and single-ply membrane systems that are either ballasted, mechanically fastened, or fully adhered.
- Flat, Tapered, Composite, & Flute Fill
- Built-Up & Modified Bitumen Membrane Systems
- Single-Ply Membrane Systems
Performance Properites
Stable Thermal Resistance
Whether used as a stand-alone component or part of a highly engineered building system, EPS insulation provides a permanent lifetime R-value that delivers maximum energy efficiency.
The amount of insulation required will vary depending on the building design, climate, and energy costs, making it essential to choose the most cost-effective R-value per inch (RSI per 25mm). The R-value of EPS insulation ranges from 3.1 to 4.3 per inch, and the RSI ranges from 0.55 to 0.76 per 25mm.
Comprehensive Resistance
Due to its high resiliency and compressive resistance, EPS is an excellent choice for the repetitive loading of roof insulation (walkability), sub-pavement flooring, road building, and general load-bearing insulation. With its flexible production process, the mechanical properties of EPS can be adjusted to suit every specified application
Moisture Protection
EPS does not readily absorb moisture from the atmosphere – its closed-cell structure reduces moisture absorption and/or migration. EPS insulation is proven to retain its specified thermal and mechanical properties due to in-situ freeze-thaw cycling. EPS is proven to maintain thermal resistance under severe long-term exposure conditions.