Some Information about why you should use Natural Hydraulic
LimeT
There are many reasons for specifying and using Natural Hydraulic
Wiltshire Limes:
Old and New
- 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 uniquely has 4 different natural hydraulic limes.
An NHL 2, two NHL 3.5s (different colours) and an NHL 5. 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.
Resistance to weather
– quick setting means less need for protection from
adverse weather conditions such as frost, compared to fat lime mortars.
Resistance to salts
– the absence of gypsum and cement ensures sulphate
attack and alkali-silica reactions are impossible. Excellent
performance even in marine environment. Resistance to bacteria
& vegetable growth – the alkalinity of lime inhibits
growth.
Flexibility
- Compressive strength is gained gradually, allowing for movement.
Elasticity
– no expansion joints, minimal shrinkage and cracking.
Permeability
– condensation dispersion, reduces rot and promotes
a healthy living environment.
Insulation
– permeability reduces moisture in structure. Low alumina
content - less susceptible to attack by salts.
Excellent workability
– Free-lime content gives good workability.
Self-healing
- Free-lime content also gives the mortar self-healing properties.
Versatility of use
– rendering, plastering, pointing, grouts and other
building mortars.
Reworking
– all Roundtower Natural Hydraulic limes can be re-worked
within 24 hours.
Recycling
– building materials used with Roundtower Natural Hydraulic
Limes can be recovered and re-used.
CO2 Absorption
– Natural Hydraulic Lime re-absorbs CO2 during carbonation
of the free lime.
Examples
– a long list of international reference projects.
Cost Effective
– low bulk density means good economy as sold by weight
but used by volume.
Customer support
– as a customer of Roundtower Natural Hydraulic Lime,
you can expect a comprehensive support and advisory service
which is second to none.
The Building Lime Company | Tel: 01980 611950 | Fax: 0845 658 7788 |