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Our Hydraulic Lime Render Treatment Procedure
Before
Do you own a beautiful, architectural property of stone or brick? Is situated in a conservation area? Is the building listed, or does it have serious problems with the exterior fabric of your property?
Did you know that you are not able to change the physical appearance of a building if your property is a listed building or located in a conservation area of natural beauty?
Does your property suffer from :
Poor mortar joints or re-pointing- Crumbling damaged stone or brick work
- Damaged architectural features
- Defective lime render or porous surfaces
Poor mortar joints or re-pointingBefore
During
During
Your local council will have to be informed, should any building work be carried out to the property. Especially considering that the appearance cannot be changed.
Building control and regulations will instruct you to use like for like building materials.
Most likely in properties of this nature the mortar used is either lime mortar, natural lime wash, hydraulic lime, lime crete and other materials such as polymer modified.
Rendering solutions are not an option unless you are granted planning consent or permission from your local Council Planning Department.
During
Hydraulic Lime Renders
We use the types of hydraulic lime renders to suit the property. Hydraulic lime mortar mix for soft, chalky or crumbling brick or stone work. Slow setting, this is also suitable for internal masonry or sheltered areas.
Advantages over cement
By being produced at lower temperatures than cement, lime mortar requires less energy, resulting in 20% less CO2 output.
Lime putty absorbs CO2 in the curing process. Non-hydraulic lime absorbs nearly its own weight in CO2, hydraulic lime, around 75% and lower.
Lime mortar can be recycled. Unlike cement Bricks, using lime mortar can be recycled unlike the cement bonded equivalent which can only be used for hardcore.
During
After
After
Strong, flexible, permeable
Traditional buildings built using lime mortar move and absorb moisture.
In comparison with cement mortar which is rigid, lime mortar ‘moves’ with the structure, thus preventing the masonry from cracking.
By using lime mortar, expansion joints can be avoided.
Likewise the imperviousness of cement mortar prevents it from absorbing water from the structure whereas lime mortar acts as a kind of ‘wick’, absorbing the moisture and allowing it to evaporate.
By absorbing moisture, lime mortar is keeping the masonry dryer and lessening the risk of spalling.