ODE Isıpan XPS thermal insulation board: plinth and foundation slab applications

Plinth and base slab details are where moisture, frost heave, and soil compaction meet. If an insulation board absorbs water under the damp-proof course, its thermal resistance collapses and perimeter thermal bridges open into the screed.

Why perimeter insulation needs closed-cell XPS

Unlike fibrous insulation or standard EPS, extruded polystyrene (XPS) features a closed-cell matrix with near-zero water absorption under diffusion and freeze-thaw cycles. On Hungarian building sites, basement perimeter walls and grade-level plinths require high compressive strength at 10 % deformation and verifiable long-term moisture resistance.

ODE Yalıtım manufactures the ODE Isıpan XPS line across dedicated extrusion facilities in Turkey. EuConX Iso Kft. supplies ODE Isıpan boards directly to Hungarian contractors and commercial developments with factory CE conformity, standard dimensions (typically 1200 × 600 mm, stepped or rebate edges), and accompanying Declarations of Performance.

Core specifications and field placement

• Applications: Facade, terrace and inverted roof, roof insulation, basement and retaining (reinforced-concrete) walls, and green roof.
• Green roof, insulation that keeps working under soil: in a green-roof build-up the closed-cell XPS board shrugs off moisture and stands up to the substrate load, so the insulation keeps doing its job beneath soil and planting.
• Thickness: available in a range of thicknesses, specified per project. Tell us your U-value target and we propose the build-up.
• Key data: λ from 0.035 W/mK, PRM 300 with 300 kPa compressive strength, EN 13164, fire class E.
• Compressive performance: High load-bearing capacity designed for perimeter retaining walls and slab-on-grade applications.
• Moisture protection: Hydrophobic cell structure prevents water uptake during ground saturation and seasonal freeze-thaw periods.
• Landed logistics: Shipped alongside ODE Starflex glasswool or BBarrier membranes on consolidated freight loads, reducing shipping overheads.

For full technical submittals, DoP documentation, and direct truckload delivery schedules across Hungary, contact our technical team at info@euconx.com or phone +36 30 485 0258.