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close this bookFCR: Fibre Concrete Roofing (SKAT, 1987, 185 p.)
close this folder6. Costs and economics
View the document(introduction...)
View the document6.1 Conclusions
View the document6.2 Evaluation of experiences
View the document6.3 Comments

6.1 Conclusions

Costs

- In most countries, FC-sheets or FC-tiles can be produced at a cost of 2 US $ to 4 US $ per square meter. This includes costs for raw-materials, labour, depreciation and interest for initial investment.

- A square meter of a FC-roof including cost for the roof structure varies between 4 US $ to 8 US $, depending on the local situation.

- Our analysis of field-experiences allows the following statement: Compared with other roofing-methods, a FC-roof including roof structure can be built at 2/3 to 3/4 of the cost of a similar roof covered with Asbestos-Cement- or Galvanised-Corrugated- Iron (GCI)-sheets. - The roof-structure will consume half of the investment, the FC-roofing-material the other half. There is no apparent difference in the costs of the roof structure whether FC-tiles or FC-sheets are used.

Economics

- The economics of FCR products depend largely on the life-span of the tiles or sheets and therefore on the quality of production.

- Both, the manufacturer of FCR products and the roof-builder by their actions fundamentally influence the lifespan of the products whether they be sheets or tiles.

- From the technical point of view the life-span of FCR products can be 10 years or more.

- From the economic point of view the life-span of FCR products should be at least 4 years, in order to justify the investment at all

- Economics of FCR are not only valued in costs but in other benefits to a local economy such as: Use of local resources, low initial investment, job creation for both men and women, less involvement of foreign currency than other roofing materials, low transport costs.

- The import component in a FCR product - if any - is in the cement and the plastic for moulds. It is typicially between 30 % and 50 % of the costs of the FCR product, e.g. 0.6 to 2 US $; comparable roofing materials such as GCI-sheets may have an import value of 3 to 6 US $/m²