The voids and crevices in a dry stone wall provide a habitat for a wide range of flowering plants, ferns, mosses and lichens. Additionally a wide range of invertebrates, birds and mammals use dry stone walls for feeding, breeding or shelter.
For 'green' building, a dry stone wall has a significantly lower 'embedded' energy value, than mortared walls. Fossil fuels are consumed only in the quarrying and transportation of the stone. Mortared walls, consume greater quantities of fossil fuels due to the additional materials of sand and cement. Cement production is a significant consumer of fossil fuel from the quarrying of limestone, crushing/grading, heating the limestone to 1,000 deg C, before packaging and transportation.
The sustainability of the wall is a function of the quality of its construction and in using a quality stone. Mine Train sandstone is a highly durable and class 1 frost resistant stone, ensuring its suitability as a recyclable material for the future.