Chimseal is the very best product for shielding your chimenea, fire bowl, terracotta pot or any masonry product. This clear sealant is straightforward to use and gives full protection against water and frost. Chimseal penetrates deep into the skin to rebuff alkalis and salts but still permits the skin to breath. Simply apply one to 2 coats by brush and leave for 24 hours to dry and 48 hours before lights a fireplace.