Natural Hydraulic Lime
There are many reasons for specifying and using
Roundtower Natural Hydraulic Limes:
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 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 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 – 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. |
Roundtower Technical Helpline
