NHL2 is typically used for internal works, external repointing, rendering and building works on most masonry types in sheltered conditions.
What is hydraulic lime?
Hydraulic lime sets by a process called hydrolysis, a reaction caused by water. They are faster setting than non hydraulic limes and more durable, meaning they are well suited to use external use, especially in damp or exposed conditions.
Singleton Birch NHL 5 is a dry powdered lime made by slaking quicklime from silaceous chalks.
This material is stronger and more durable with a faster setting speed. Suitable for use with dense materials, exposed masonry and marine construction.