Concrete requires container support while in plastic state. Forms are therefore required to support plastic concrete until it has hardened to support its own weight. In our country as also in other countries the forms are usually built from timber boards and scantlings. Although steel forms have now superseded the timber forms on large scale repetitive work, the use of timber is still wide spread in the construction of residential buildings as well as in other buildings. Timber boards are very expensive in our country, therefore wornout, disfigured, broken and structurally unsound boards normally available on rental basis are used to fabricate formwork. Reinfored Concrete structures cast against these forms are very poorly formed, the surfaces are usually uneven and honeycombed requiring costly and time consuming plastering. This paper discusses the use of ferrocement for construction of permanent form work which will remain in place as a lining or facing. Behaviour of a slab panel cast against ferrocement forms is also discussed and a case is built to support the use of ferrocement in place of wornout and substandard timber forms. This study forms a part of the author's on going work aimed at lowering the cost of construction of houses.