This research proposed to assess the effectiveness of chemical poultice in removing water-repellent treatments from hand-made brick substrates. This investigation is due to the history of unintended consequences caused by water repellents and subsequent damage, which necessitated a method for removal. Additionally, there is a growing need to ascertain if water repellents are retreatable and compatible for their continued use on historical buildings. Furthermore, the industry currently lacks research on the removal of water repellents. A performance-based evaluation was conducted to assess the effectiveness of solvent-based and alkaline-based chemical removers with poultices on modern hand-molded bricks. The evaluation contained water absorption test and water vapor transmission test, surface photomicrography and reflectance (FT-) IR spectroscopy. The findings revealed that tested modern water repellent treatment has high breathability and would not introduce water-related issues to bricks. However, the effectiveness of chemical poultices was found to be limited. Besides, the removal action was found to leave residues of chemical removers. These residues pose a risk of further deterioration to the bricks. Therefore, even though modern water repellent treatments have the compatibility with bricks, the retreatability is still a consideration.