Development of low-cost roofing from indigenous materials in developing nations; final report

sponsored a four-year research program to develop low-cost roofing from indigenous materials in three LDC"s (Philippines, Jamaica, and Ghana). In Phase I, resources were surveyed, and collaborating individuals and organizations defined. In Phase II, experimental roofing composite materials systems were developed and optimized. In Phase III, demonstrations of the roofing manufacture were conducted and experimental roofs installed. Four composite panel roofing material systems were developed which utilize major percentages of indigenous bagasse filler, and minor amounts of phenolic or other resin binder. Three of the four processes use an intensive (Banbury) mixer. All four have compression molding as a final process step in panel fabrication. The products range in raw material cost from 6-14 cents per square foot of roofing panel, depending on composition, resin content, etc. The program was implemented in the three participating countries through advisory committees and technical working groups. In-country, small-scale experimental work was initiated early, and continued throughout. Technology was transferred on both an organizational and person-to-person basis. Local labor, materials, and facilities were utilized to demonstrate manufacture of roofing, by one or more processes, in the Philippines, Jamaica, and Ghana.