Cornerstone Marine P15 Mortar
Cornish Lime
£16.99
Price read from Cornish Lime on 2026-10-15. Check before buying.
A ready mixed natural cement, water-resistant mortar suitable for aggressive freshwater and saltwater applications requiring a robust level of durability, reduced risk of debonding and resistance to sulphates. Available in a 25kg bag. Cornerstone Marine P15 (previously known as Harbour Mix) is a dry ready mixed natural cement mortar for marine building and pointing work of water-bearing masonry above and below the water level in aggressive marine environments. One of our most popular marine products, Marine P15, is frequently chosen for seawater and saltwater canals. Available with two finishe
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