Ancient Irish stone house. Where stone was available for Irish cottage building it was used. Stone was either collected by horse and cart on the sandstone mountains or quarried from the limestone quarries that existed all over the country. The limestone quarries served many purposes. Limestone could be burned to produce lime for the fields and lime with which to make mortar for building. old irish cottages were often damp, smoke filled, badly lit, conducive to bad health,with foul air, & cold.