‘Hot mix’, ‘hot limes’ and ‘hot-mixed mortars’ are lime mortars consisting of quicklime, water and an aggregate such as sand which when mixed product heat...
Cornerstone is our brand new range of dry, ready mixed natural hydraulic lime mortars, renders and related products.
A guide by Cornish Lime, using NHL or Lime Putty
Animal hair has traditionally been used as reinforcement in lime renders as a means of improving tensile strength and to reduce shrinkage cracking. Introduced into the mix by teasing the hair into the mix prior to the mortars use.
After a Lime Render has been placed it must be allowed time to to cure/fully hydrate before it acquires strength and hardness.Curing is the process of keeping the mortar/render under a specific environmental condition until hydration is relatively complete.
Lime putty is not used on its own it is the binder where the putty is mixed with a suitable sand in the correct ratio to make a lime mortar, lime render or a lime plaster to name its main functions.
The use of building limes have increased considerably in recent years and for very good reason; these relatively simple materials are essential to the structural welfare of historic buildings, a fact that has not escaped my attention whilst working with these materials over the last seventeen years or so.
Technical advice note for the application of Lime Mortars.
Prompt is a rapid set cement with a wide range of controled setting times
Bag rubbing is a technique where the pointing of masonry is conducted in a manner closer to rendering, that does not (have to) extinguish the ‘character’ of the wall.
The use of natural lime mortars and renders has increased considerably in recent years compared to just a couple of decades ago. These simple, basic materials are fundamentally important to the long term survival of historic buildings.
This fast setting waterproof cement is so versatile that it is constantly finding new uses throughout New build and Restoration Project. The addition of measured amounts of Tempo Retardant, it's setting time can be controlled from as little as 90 seconds.
Our ready mixed lime products are available in a range of colours and can be used for lime pointing, rendering, plastering or building. We can manufacture to your specific requirements choosing from our vast range of coloured sands which is then mixed with mature lime putty.