EPS panels are semi-permeable, with a vapor transmission rate of about 1–2 perms (US) or ~60 ng/Pa·s·m² (SI units). This allows controlled vapor diffusion but prevents bulk water ingress, making them suitable for exterior envelopes when properly detailed with air and moisture barriers.

Yes, EPS is fully recyclable. Offcuts and scrap material from construction sites can be collected and reprocessed into new EPS products or other plastic items. Many regions have dedicated EPS recycling programs.

The closed-cell structure of EPS does not provide food or nesting material for insects or rodents. Proper sealing of panel joints further prevents pest intrusion, making EPS a good option for pest-prone areas.

EPS provides moderate sound insulation but is mainly designed for thermal performance. For projects requiring higher acoustic performance, combine EPS with dense layers like gypsum board or mineral wool.

EPS is chemically inert and does not off-gas volatile organic compounds (VOCs) after production. The manufacturing process uses pentane as a blowing agent, which dissipates before installation. Finished EPS panels are safe for indoor air quality.

EPS panels are lightweight and easy to handle, allowing for quick assembly with minimal equipment. They can be joined using tongue-and-groove edges, splines, or mechanical fasteners. After installation, panels are typically finished with exterior renders, cladding, or siding and interior drywall/plasterboard to meet design and safety requirements.

EPS panels can be manufactured with fire-retardant additives (FR grade). These panels meet building codes such as ASTM E84 (Class A/B) or EN 13501-1 (Euroclass B-s1,d0). In a fire, FR-grade EPS self-extinguishes when the ignition source is removed but should always be covered with approved finishes (such as gypsum board or cement render) as required by local codes.

Yes, EPS panels are available in different densities and compressive strengths tailored for load-bearing and non-load-bearing applications. Standard construction panels range from 80 to 200 kPa (kilopascal) compressive strength. With proper engineering, EPS panels can be used for exterior walls, floors, and even roof structures in modular and prefabricated buildings.

EPS panels typically offer an R-value of 3.6–4.2 per inch (25–30 mm) of thickness. For example, a 100 mm (4 in) panel delivers an R-value of about 14.4–16.8. R-values remain stable for decades, unlike some alternative insulations that lose efficiency due to off-gassing or moisture absorption.

EPS panels have a closed-cell structure that provides resistance to moisture, temperature fluctuations, and freeze-thaw cycles. The panels do not degrade or lose insulation value in hot, cold, or humid environments. With a service life of 30–50 years (depending on installation and exposure), EPS panels maintain their structural integrity and thermal performance over time.