Four of the most significant advantages of natural hydraulic lime over fat/putty lime are:


1. The early initial set, allows the contractor to make unimpeded progress throughout the year, especially during the winter months on the proviso that protection is provided for the first seventy two hours of curing, rather than for several weeks.


2. The quality of manufacture ensures that even as a result of exposure to high levels of moisture extraction in its early set the natural hydraulic lime will not suffer from the unsightly contamination of the face of the mortar by free lime deposits (leeching/lime bloom).


3. Natural hydraulic lime tolerates the transfer of damp and salts without deterioration even if this occurs during the very early days of carbonation.


4. It enables work to be completed quicker, saving time and money.


The perceived difficulty associated with working with lime has been removed by the introduction of Unilit Lime products. These have been developed for the restoration market by the introduction of a modern process to produce traditional restoration products that do not require specialist craftsmen’s knowledge for successful application.


Unilit Natural Hydraulic Lime Mortars are highly vapour permeable, to allow the substrate to breathe and stabilise, they are slow in carbonation giving flexibility to tolerate natural movement in the background and variable in strength (by control of sand grading and mix proportion) to ensure compatibility with the background to which they are applied. In addition to traditional lime sand mortars, the Unilit range allows for the selection of natural hydraulic lime products, which maintain the fundamental performance of Natural Hydraulic Lime mortars, while enhancing certain properties such as adhesion, waterproofing or insulation and therefore provide unique solutions to a wide range of problems associated with the repair and restoration of old structures, and ensures the suitability and success of the repair.


Plastering and Rendering


Unilit hydraulic lime mortars are suitable for plastering and rendering internally and externally in both restoration and new building. Our range includes: • traditional lime sand mixes, • bonding layers for unstable substrates, • base preparatory coats for thick and thin coat applications, • salts containment, stabilisation and waterproofing, • lightweight, insulating and thermal block applications • natural and pre-coloured finishing coats in a range of textures, • fine filler and repair plasters


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