A ECO FRIENDLY thermosetting closed-cell thermal insulation was specified for the new DEA head office in Pretoria.


Having recently received an impressive six-star Green Star South African Office Design V1 certification from the Green Building Council of South Africa (GBCSA), the new Department of Environmental Affairs (DEA) head office is one of the latest, most impressive green buildings in Pretoria.
The building is the first government building in South Africa to achieve the rating. The six-star rating is the highest GBCSA score achieved by a commercial office space of this magnitude, which includes a lettable area of 27 422m².
The selection of finishes used on the project played an integral role in ensuring responsible resource management. A full cradle-to-grave lifecycle assessment (LCA) was done to ensure that informed decisions were made in terms of everything from the resource-extraction phase to the use and disposal phases.
Lambdaboard®, a thermosetting closed-cell thermal insulation, offers the highest R-value per 25mm than any other commercially available insulation for the building industry. This makes it a very easy option to meet the energy regulations. Being a rigid board that does not deteriorate through creep or other elements found in a building, including hot and cold temperature cycles that are common to other insulation mediums, there are very few limitations in application. It is available with numerous exposed facings to suit application and aesthetics required projects.
Besides the abovementioned qualities, Lambdaboard® was specified due to the fact that it doesn’t contain any HCFCs or HFCs. The DEA is currently embarking on an HCFC phase-out programme, which is why Rigifoam’s product was chosen specifically. A division of Southey Holdings, Tate and Nicholson, installed the products in the under-soffit of the basement. VERSUS acrylic coating was used to create a seamless finish. 
The facade and concrete slab roof have Lambdaboard® installed to complete the total insulation envelope of the structure. As more municipalities and governments adapt green building practices as part of their code, it becomes more of a requirement and less of a luxury – it becomes the definition of good design.

A lifecycle assessment (LCA) is a technique that assesses the environmental aspects and potential impacts associated with a product, process or service by:
• Compiling an inventory of relevant energy and material inputs and environmental releases.
• Evaluating the potential environmental impacts associated with identified inputs and releases.
• Interpreting the results to help you make a more informed decision.

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