Terraco offers three exterior insulation and finish systems (EIFS) in the UAE. They share the same build-up of adhesive, insulation board, mesh-reinforced basecoat, primer and decorative finish. The difference is the board. Short answer: EIFS Alpha uses EPS and is the cost-effective, bestselling option. EIFS Perma uses mineral wool and is Terraco’s choice where a higher fire rating is required. EIFS Polar uses XPS, which Terraco positions for hot, humid, air-conditioned buildings. This guide compares them using Terraco’s UAE product information.
The three systems side by side
| EIFS Alpha | EIFS Perma | EIFS Polar | |
|---|---|---|---|
| Insulation board | EPS or graphite EPS (G-EPS) | Mineral wool (MW) | Extruded polystyrene (XPS) |
| Thermal conductivity (λ) | EPS 0.033; G-EPS 0.030 W/(m·K) | 0.040 W/(m·K) | 0.030 W/(m·K) |
| Terraco positions it for | Most projects; its bestselling EIFS | Higher fire rating; enhanced breathability | Hot, humid, air-conditioned buildings; high-traffic areas |
| Fire claims on Terraco’s page | None stated; follow civil defence rules | NFPA 285, NFPA 268, ASTM E84 Class A; Civil Defence approvals stated | None stated |
| Fixings | Plastic fixings, plastic or steel pins | Steel fasteners with steel pin dowels | Plastic fixings, plastic or steel pins |
| Primer | P Primer | Silprime | P Primer |
| Typical finish | Terracoat | Breathable finishes: Terraco Sil and Terol renders | Terracoat |
All three use Terraco Styrofix to fix the boards, and Styrobond DP as the basecoat with glass-fibre mesh. Styrobond DP’s data sheet gives 4 to 5 kg/m² for a 3 to 5 mm embedded layer.
Thermal performance by thickness
Terraco publishes U-values for the insulation board alone, in W/(m²·K). Lower is better:
| Board thickness | EPS (Alpha) | G-EPS (Alpha) | MW (Perma) | XPS (Polar) |
|---|---|---|---|---|
| 50 mm | 0.66 | 0.60 | 0.80 | 0.60 |
| 100 mm | 0.33 | 0.30 | 0.40 | 0.30 |
| 150 mm | 0.22 | 0.20 | 0.27 | 0.20 |
| 200 mm | 0.17 | 0.15 | 0.20 | 0.15 |
Mineral wool needs a thicker board for the same U-value: about 121 mm of MW matches 100 mm of EPS at 0.33, by our calculation from Terraco’s λ values. That extra depth affects window reveals and sills.
EIFS Alpha: EPS, the default choice
Terraco calls EIFS Alpha its bestselling EIFS and describes EPS as typically the most cost-effective board. Graphite EPS is about 10% more efficient, so thinner boards can be used, which helps on renovations. Our EIFS Alpha guide covers the layers in detail.
EIFS Perma: mineral wool for fire rating
Terraco recommends EIFS Perma where a higher fire rating is required. Terraco states it is tested to NFPA 285, NFPA 268 and ASTM E84 Class A, and holds Dubai, Abu Dhabi and Umm Al Quwain Civil Defence approvals. It is also suggested for buildings that need more breathability, including older structures with high moisture. Confirm current approval status for your project with Terraco and your consultant.
EIFS Polar: XPS for humid, air-conditioned buildings
EIFS Polar uses XPS, which Terraco says has low vapour permeability that helps reduce condensation in hot, humid climates with indoor air conditioning. Terraco also cites better mechanical properties for high-traffic areas, and thinner sections around windows and doors. Its page makes no fire-rating claims.
Fire safety and approvals
Insulated facades in the UAE must meet civil defence fire and life-safety requirements. The system choice, the board and the detailing (fire breaks, openings) should be confirmed with your consultant and the relevant authority before ordering. Terraco’s guarantee also requires installation by an Approved Terraco EIFS Applicator.
Finishing the system
Alpha and Polar are typically finished with Terracoat; Perma with breathable mineral finishes such as Terol. We compare the two in Terol vs Terracoat. On sheathing boards behind EIFS, Terraco uses Weathercoat Seal as the air and water barrier.
Frequently asked questions
Which EIFS gives the best insulation?
Per millimetre, G-EPS and XPS (λ 0.030) perform best, then EPS (0.033), then mineral wool (0.040). The right choice also depends on fire requirements and the building.
Can EIFS go on an existing building?
Terraco lists EIFS Alpha for new build and renovation. Older walls usually need repairs first; see our guide to repairing concrete with Terramix.
Buying Terraco EIFS in Sharjah and Dubai
Al Tashteb Al Saree is an authorised Terraco distributor and supplies EIFS components direct from the manufacturer. Message us on WhatsApp with the system, board thickness and facade area. You can also browse every Terraco product we supply.
Sources
- Terraco UAE: EIFS Alpha
- Terraco UAE: EIFS Perma
- Terraco UAE: EIFS Polar
- Terraco UAE: Styrobond DP technical data sheet (PDF, version 11.2014)
Retrieved 31 October and 1 November 2026. Board values are as published by Terraco; the 121 mm equivalence is our own calculation. The main image is illustrative.
