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Advantages of EIFS

In many markets sustainable building, and in particular energy efficiency in buildings, has become a key benchmark of successful building designs. Today Architects are quick to see the benefits that these sustainable EIFS building systems give. They not only allow designers a very large degree of design flexibility, but also typically generate an excellent Return on Investment (ROI) and provide a compelling cost-to-benefit rationale.

EIFS is ideal as it can be applied to both new and existing buildings. In fact, many older buildings are rejuvenated and given a facelift using Terraco EIFS, because these systems are applied to the exterior of a building, not the interior. Importantly internal living space is not sacrificed - and critically there is no need for occupants to vacate the building while installing the Terraco EIFS, which makes EIFS perfect for renovation work.

One of the largest benefits of EIFS is that it can be used for renovation projects, and with the rising cost of energy in many countries across Europe and Russia, older buildings are now being made energy efficient structures using Terraco EIFS. The same principal can be applied in the Middle East and Australasia to existing buildings, be they hospitals, hotels, commercial centres, shopping malls, warehouses, schools, universities, even a private residence.

The Terraco Group has been pioneering the development and production of Exterior Insulation Finishing Systems since the 1980's. Terraco has numerous international EIFS quality certifications and approvals - EOTA (European), BBA (British Agrément), the US FED Specification Certification, as well as certification from Ireland, Russia, Turkey, China, Korea and the UAE.

The versatility and durability of Terraco EIFS makes it ideal for new build as well as renovations projects.

Condensation Reduction

EIFS reduces condensation which occurs in places of thermal bridging.

It reduces the temperature difference between cold spots and the internal air temperature coupled with the high internal humidity.

Prevents condensation which can lead to mould growth.


Breathability can be engineered into an EIFS system by proper choice of finish / insulation.

Extruded Polystyrene (EPS) based systems have good breathability which can be further enhanced using a vented base profile and a sub-insulation cavity.

Mineral wool (MW) is a breathable insulation which when used with silicone / mineral based finishes produces an EIFS system with excellent breathability suitable for old structures without a DPC.

Interior insulation seals the inner wall and does not allow internally generated humidity to escape through the wall thereby leading to high levels of humidity and hence condensation.

Space Saving

Buildings are in general valued according to their interior floor space.

Interior  insulation systems typically reduce internal floor space by approx 6%.

Exterior Insulation systems have no effect on the interior space thereby increasing the property valuation by an equivalent amount.

Thermal Efficiency

External thermal insulation composite systems (ETICS, another word for EIFS) has the design flexibility to fit any u-value requirements and is commonly used for Passive Construction with u-values down to <0.1.   U-Value range 0.1 - 0.35

Interior insulation is normally limited to 70-80mm as reducing floor space is a serious consideration.  U-Value range 0.35 – 0.45

Cavity wall insulation is limited to the dimensions of the cavity which is normally 50-70mm.  U-Value range 0.45 - 0.6

  • Neighbouring properties with and without EIFS

  • Interior Insulation                            

  • Cavity Wall Insulation                       

Thermal Mass Utilisation

With an exterior insulation system all energy used to heat or cool the inner space is used and stored in the wall mass of the structure.

It uses the  mass of the structure as a storage heater / cooler.

The stored energy radiates back into the structure to help maintain the desired temperature.

Interior insulation does not have this effect leading to more temperature swings in the building.

3-in-1 System 

Exterior insulation is a 3-in-1 construction system:


Plastering / levelling


Interior insulation and Cavity Insulation only insulates.

Exterior Insulation therefore does more for your money.

Convenience in Use

Exterior Insulation renovation projects can be done while the building is in use.

With interior insulation there is substantial disruption to interiors. In most cases the property needs to be vacated when such works are in progress.




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EIFS Brochure



Terraco South Africa (Pty) Ltd.
Unit 8 Miracle Retail park
Corner of Lenchen and Old JHB road, Centurion
PO BOX 5041
Gauteng 0174
South Africa

Tel: 0861 TERRACO / 0861 8377226
+27 79 7799269 or +27 12 880 0931