Continuous external EPS with a mesh-reinforced basecoat and textured finish - new build, or a retrofit over existing masonry.
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Terraco Textured Coatings are ready-mixed, acrylic/silicone resin-bound decorative render finishes that Technopol SA applies as the reinforced, weatherproof outer skin of an EIFS wall — the Terracoat topcoat laid over a Styrobond DP basecoat and Terramesh glass-fibre mesh on the EPS insulation board.
| Property | Value | Standard |
|---|---|---|
| Product type / build-up | Ready-mixed acrylic/silicone resin-bound textured renderreinforced weatherproof outer skin of an EIFS wall (Terracoat topcoat over Styrobond DP basecoat + Terramesh mesh on EPS board) | — |
| Finish grades & grain (texture) size | Excel / Granule / Sahara — 0.8 to 3 mm | — |
| Thermal conductivity (λ) / R / U | Not applicable — the coating is the finish skin, not the insulation; λ belongs to the separate EPS board | — |
| Specific gravity (wet coating) | 1.65–1.70 (Excel 1.70; Granule / Sahara 1.65) | — |
| Adhesion / pull-off bond strength | >2.0 N/mm² | — |
| Water resistance | Sd <0.10 m (vapour-permeable); W24 <0.15 kg/m²·h^0.5 (liquid-water uptake) | — |
| Reaction to fire (coating itself) | Flame Spread Class 0 | ASTM E84 |
| Fire performance (full EIFS system) | PASS — temperature, flame-spread &mechanical criteria (facade fire-spread; a reaction-to-fire result, not a fire-resistance rating) | SANS/BS 8414-2:2017 |
| Material consumption / coverage | 1.5–4.5 depending on grade (Technopol calc ~2.0; 25 kg pack ≈ 12.5 m²) kg/m² | — |
Grade-dependent: grain size, specific gravity and consumption vary across the Excel, Granule and Sahara grades (0.8–3 mm grain). Specific gravity is the wet-coating value (dimensionless) — it is not an insulation density. The coating is the finish skin; thermal conductivity (λ), R- and U-values belong to the separate EPS / mineral-wool insulation board, not to the render. Fire scope: 'Class 0' is a reaction-to-fire (flame-spread) rating of the coating per ASTM E84. The SANS/BS 8414-2 PASS is a full-system facade fire-spread test (report FTC 21/033, Issue 1, 22 June 2021) on the exact assembly: pigment primer + Terraco Granule Filled 1.5 mm Sil, over Styrobond DP + Terramesh on 50 mm Technopol LiteCel FRCel EPS (Grade FR100) with 300×50 mm StoneWool firebreaks per floor. It is NOT a fire-resistance (REI) rating — the inner wall must separately achieve its required FRR per SANS 10177-2. The system may only be built exactly as tested. Full EIFS system carries a 5-year installer guarantee (commercial, not a material property).
Values from Technopol technical documentation. Confirm the exact figures for your specification with Technopol.
| Property | Value | Standard |
|---|---|---|
| Reaction to fire (coating) | Flame Spread Class 0 | ASTM E84 |
| Fire performance (full EIFS system) | PASS (facade fire-spread, reaction-to-fire not FRR) | SANS/BS 8414-2:2017 |
| Adhesion / pull-off bond strength | >2.0 N/mm² | |
| Specific gravity (wet coating) | 1.65–1.70 |
Every test report and certificate behind these figures is on the test-report register.
The same product does a different job in each of these assemblies - each page states the target, the clause and the limits.
Terraco's textured topcoat range, applied over the EIFS basecoat and mesh. Gravitex is acrylic-based; Terracoat Sil is silicone-based (better dirt-shedding and vapour permeability). Grain size and application (trowel/spray) vary by grade — see the spec table above for exact figures.
Terraco is an international manufacturer of decorative and protective coatings, operating in over 30 countries. Technopol supplies the EPS insulation and applies the system in South Africa; the render, basecoat and mesh are Terraco's. The SANS 8414-2 facade fire test was commissioned and passed by the two companies together.
Visit Terraco ↗ The facade fire test →Send us the drawings. We will size it, detail it and quote it.
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