Natural hydraulic lime, is an odourless powder, when mixed with sand and water it becomes a binder for building applications (e.g. mortars and renders).
Roundtower Natural Hydraulic Limes are natural products. They contain no additives and are not blended. Roundtower Natural Hydraulic Limes are suitable for building restoration and conservation. Equally, they are very suitable for new construction and engineering works. Roundtower Natural Hydraulic Limes are recommended for mortars, plasters, concrete and grouts.
There are three grades of Roundtower Natural Hydraulic Lime: NHL2, NHL3.5 and NHL5.
Feel free to download our booklet on Thor Helical Lime.
Brick and Mortar Restoration are now the State Distributor of Roundtower Natural Hydraulic Limes.
We have worked alongside ThorHelical Australia in importing Roundtower Natural Hydraulic Limes into Australia and more importantly into Western Australia.
If you would like a Quotation on a Heritage Project or would just like to purchase some bags of NHL, give us a call today 1800 MORTAR (667827)
Roundtower Natural Hydraulic Lime 2: NHL 2
Feebly Natural Hydraulic Lime
Used for internal plastering and externally
Where the masonry is made up of a soft material.
Roundtower Natural Hydraulic Lime 3.5: NHL 3.5
Moderately Natural Hydraulic Lime
Used mainly for masonry and external plaster works.
The most popular material for new build work
Roundtower Natural Hydraulic Lime 3.5 White: NHL 3.5 White
Moderately Natural Hydraulic Lime
Another NHL 3.5 with the exception that it has a higher 'whiteness'
And is useful when colour matching mortars.
Roundtower Natural Hydraulic Lime 5: NHL 5
Eminently Natural Hydraulic Lime
This material is used in areas of high exposure such as in marine environments
Wall copings, lime concrete, etc.
Reasons to choose Roundtower Limes
There are many reasons for specifying and using Roundtower Natural Hydraulic Limes for restoration and conservation:
Old and New - Roundtower Natural Hydraulic Limes are suitable for building restoration and conservation. Equally, they are well suited for new construction and as mortars, plasters, concrete and grouts.
Choice - Roundtower has 5 different natural hydraulic limes. An NHL 2 (white), two NHL 3.5 (one white and one grey), an NHL 3.5 Premix and NHL 5 (bright). Roundtower also supplies Lime Putty. This gives the user the widest choice of material...
Natural - Roundtower Natural Hydraulic Limes are natural products. They contain no additives and are not blended.
No additives - no need to add pozzolans, cement, plasticizers, water retainers or waterproofers. Roundtower Natural Hydraulic Lime gives consistently high quality results.
Compatibility & Suitability – variety of strengths and colours available to suit existing mortar, whatever age.
