Cut-to-size EPS, PIR and stone-wool boards for under-slab, cavity, inverted-roof and warm-roof insulation.
Kit complete
Technopol's bulk insulation is rigid, closed-cell, fire-retardant expanded polystyrene (LiteCel / FRCel) supplied as cut-to-size flat sheets in a range of density grades from 12 to 30 kg/m³, each with its own thermal conductivity and compressive strength.
| Property | Value | Standard |
|---|---|---|
| Material / build-up | Rigid closed-cell fire-retardant expanded polystyrene (LiteCel / FRCel), cut-to-size flat sheets — all grades supplied fire-retarded | — |
| Thermal conductivity, λ @10 °C (max) | 0.033–0.045 W/m·K | — |
| Nominal density | 12–30 kg/m³ | — |
| Compressive stress @10% compression (min) | 60–200 kPa | — |
| Cross-breaking (flexural) strength (min) | 80–250 kPa | — |
| Fire-resistance rating (REI) | None — reaction-to-fire class only; plain board carries no REI (minutes) rating | SANS 10177-2 |
| Service temperature | 80 long-term / 100 short-term °C | — |
| Standard sheet sizes | Widths 1200 / 1220; lengths 2000–7500; thickness 5–600 mm | — |
| Applicable / test standards | SANS 53501-1 (reaction to fire); SANS 10177-11 & -9 (flame spread); ISO 9001:2015 (ISO 14001 & 45001 lapsed Mar 2026, recertification in progress) manufacturer | SANS 53501-1 |
Thermal, density and strength values are grade-dependent and span the product range from the lightest grade (12SD: λ 0.045 W/m·K, ≥60 kPa) to the densest (30DV: λ 0.033 W/m·K, ≥200 kPa); intermediate grades 15SD, 16DV, 20DV and 24DV fall between. Confirm the specific grade per specification. Reaction-to-fire Class B-s1,d0 was determined on a ~60 mm sheet at ~18.37 kg/m³ (SANS 53501-1 SBI test; report '2023-08-17 Technopol', Ignis Testing, Cape Town; 5-year validity). The SANS 10177-11 flame-spread class B/B1/2/H (report FTC 19/194) is stated valid only for thicknesses up to 120 mm and densities up to 18 kg/m³. Higher-density (24DV/30DV) or thicker board is not separately classified. Plain EPS board carries no fire-resistance (REI, minutes) rating — fire resistance is a tested-assembly property under SANS 10177-2, not a property of the loose board. No R-value/U-value table is published for the bulk board; R = thickness ÷ λ (e.g. 100 mm of grade 20DV at λ = 0.035 ≈ 2.9 m²·K/W).
Values from Technopol technical documentation. Confirm the exact figures for your specification with Technopol.
The same product does a different job in each of these assemblies — each page states the target, the clause and the limits.
Continuous Insulation (EIFS)Cavity Wall InsulationCold Store & Refrigerated BuildingsUnder-Slab & Slab-Edge InsulationInverted (Protected-Membrane) RoofWarm RoofAgricultural & Poultry Housing
Each figure is labelled with how we know it — a named in-validity test, a supplier value, an in-house calculation, or a test whose validity has expired.
| Property | Value | Standard | Source report | Status |
|---|---|---|---|---|
| Thermal conductivity λ @10°C | 0.033–0.045 W/m·K | — | Provisional | |
| Nominal density | 12–30 kg/m³ | — | Provisional | |
| Compressive stress @10% | 60–200 kPa | — | Provisional | |
| Reaction-to-fire class | B-s1,d0 | SANS 53501-1 | IT 23-08-00009 | Verified |
Labels are defined on our data promise; every source report is on the test-report register.
A material specified for the wrong job fails you, then us. We would rather lose the order.
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