The Welsh had slighted the castle, even blocking up its well. Over the following fourteen weeks, Reginald set about restoring the castle. He left detailed notes on this venture, showing that it cost £1466 4s. 5d. Edward himself was thought to have been present for a couple of days prior to 6 July to instruct the architect James of Saint George in the reconstruction efforts. More than 340 carpenters and over 600 diggers were employed in the repair effort. A further 30 to 35 stone masons worked on Caergwrle Castle each week from June through to November. A number of wooden buildings are referring to as having been constructed at this point, including a chapel, a bakehouse and several offices for clerks.