Nathan Pepper
Natural Hydraulic Lime. (NHL) for most jobs NHL 3.5 is sufficient.
Lime cement Mortar
Posted by John Sammons, on
How do you mix lime cement mortar and where can you buy suitable lime?
Nathan Pepper
Good evening John, there are several different types of lime mortar. A lime cement mortar will simply consist of sand, hydrated lime and cement. Often mixed in a 5/1/1 ratio. This type of mortar is only suitable for structures built using cement. If the original structure has been built using a lime mortar it is imperative that no cement is used in the mix. In this instance you should use a hydraulic lime mix. This type of lime is harder to source but several builders yards do stock it and you can also buy online. For this type of mortar mix 2 parts sharp sand with 1 part silver sand and 1 part hydraulic lime. Depending on the strength you desire you can use either nhl2,nhl5 . 3.5 or nhl
