Holl International is constantly striving to expand its presence in the local, neighbouring southern African and international markets by forging partnerships with locally based and owned companies operating in these countries Holl International Limited, construct and erect both civil and prefabricated modular buildings on a concrete base or on a chassis, utilizing insulated sandwich panels for the walls and or ceilings. You have the option of using IBR insulated panels for the roof. Holl International is able to install, extend, dismantle and re-install on other sites including re-locatable mine camp accommodation, prefab offices and more. Prefabricated Buildings are an effective and quick alternative to brick buildings. Two main factors set prefabricated buildings apart quality and speed.