PORTENCROSS CASTLE; ARCHAEOLOGICAL EVALUATION DATA STRUCTURE REPORT PROJECT 2597
Guard, Glasgow University (2005)
In April 2008, Glasgow University Archaeological Research Division (GUARD) carried out evaluations of the floor deposits in the basement and Great Hall of Portencross Castle, Portencross, North Ayrshire. The work was carried out on behalf of the Friends of Portencross Castle Ltd (FoPC) and was funded by FoPC and the Heritage LotteryFund.
The evaluation found that the existing basement floor, which comprised flagstones and cobbles, was of relatively recent date and that the original stone floor lay about 0.45 m below the flags and cobbles. A drainage culvert in the basement had also been in-filled in modern times. The evaluation in the Great Hall found a compacted clay floor layer overlying rubble covering the barrel vault of the basement.