What is RASTRA®?
- Structurally strong to withstand up to a category 5 hurricane
- Impervious to the elements: frost, earthquakes, strong winds, etc.
- Energy-saving, with great thermal performance
- No rodents, no termites, no mold, no out gassing
- Safe and non-combustible, with a 4-hour fire rating
- Easy to build/save money - If you successfully built houses as a child with Legos, you can build your own house out of RASTRA®.
- Unlimited lifespan
- Flexibility in design
- High sound insulation and absorption
- Needs no insulation
- High-quality construction
- Full service and assistance
- Technical support, engineering
- Over 9 million units sold all over the world
- Plus 30 years of continuous progress and improvement
RASTRA® is a concrete form system that is made of a lightweight material called THASTYRON™. THASTYRON™ provides a permanent framework for a reinforced concrete grid that forms load-bearing walls, shear walls, stem walls, lintels, retaining walls and other components of a building. By filling the cavities of the elements with concrete excellent strength results. The channels inside the elements have been designed to provide optimum strength while using the lowest possible amount of concrete.
RASTRA® affords the ultimate wall properties, such as insulation, soundproofing, fire protection, etc. … all in one easy-to-install element. THASTYRON™ is also resistant against frost and heat radiation. It does not entertain mold or attract nesting insects. Eight-five percent of its volume is recycled post-consumer polystyrene waste, which otherwise would have very likely ended up in landfills, never to disintegrate.
Environmental Aspects
Eight-five percent of a RASTRA® building block’s volume is composed of recycled post-consumer polystyrene waste, which otherwise would have very likely ended up in landfills never to disintegrate.
The production of RASTRA® elements can be classified as ecologically clean. No particles or fumes are set free during its production, and only a minimum of energy is required. The production of ten square feet of material consumes only about 1 KWH of electricity, and no heating process is involved.
All residues of the production process are immediately recycled into another batch and converted into new RASTRA® elements. In addition, remnants from the building site can be shipped back to the plant and recycled.
Using cement, one of the most abundant resources, and waste polystyrene, RASTRA® is an example of a total environmentally friendly product.
RASTRA® / The Environmentally Friendly Solution
The RASTRA® building system is the only stay-in-place insulated concrete form (ICF) system of its kind. RASTRA® is a sustainable, energy-efficient, environmentally correct construction system. RASTRA® is produced out of recycled post-consumer plastics – such as expanded polystyrene, which is mixed with cement. RASTRA® offers the structural strength of concrete paired with high-thermal insulation, sound attenuation and fire resistance. It is a truly “green” building material for houses and commercial buildings (up to 5 stories).
More Information
To obtain more information on RASTRA®, we would appreciate it if you could fill out a short info page. You will then be linked to our detailed Web pages and you will receive an access code at the e-mail address you provide. You can use this code forever to access all the available information about RASTRA®.
If you would like us to send you a RASTRA® sample, you are more than welcome to request one.






