The main purpose of temporary roofing is to allow longer periods of work to be carried out, without damaging the integrity of a roof. A temporary roof prevents weathering through erosion or wind damage to more fragile roofing surfaces such as tiles or slate.
Some temporary roofs used to be found in the form of large sheets of heavy cloth or plastic which attached to the outside of the scaffolding or building by ropes or nails, but the cloth walls had the disadvantage of blocking out the light and of being easily damaged, rendering the protection relatively expensive and also non reusable.
However nowadays the majority of temporary roofing is now made from corrugated fibreglass or PVC sheets that have been connected together by frames, and fastened onto the original scaffolding structure. This ensures a stable working environment on the roof, whilst maintaining its integrity and allowing work to continue through wet and windy weather, particularly useful in the winter months.