Hessian sheeting is still used, as it was traditionally, to cover and protect lime mortar until it gains sufficient strength. This is high quality, standard weight (183gsm / 6oz) hessian, the type that was most commonly used. It is most cost effective because it is most versatile. It can be used as a single layer to increase coverage. It can be doubled over or even tripled as required if more protection and screening is necessary.