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pointing old brickwork right mix for putty lime
In regards to your pointing can I ask a few questions and then I will be better placed to advise you -
Is the work internal or external?
If external, how exposed is the wall you are looking to point?
When would you be looking to undertake the works?
Do you have a reasonable joint size, i.e. 10 mm plus? as this may have an impact on the type of sand which is most suitable.
If the work is internal, a suitable mix for pointing would be 1 part lime putty to 3 parts washed sand by volume.
We also supply the mortar ready mixed, to these ratios, as our CLM28.
If the work is external, firstly we would not recommend the work is undertaken until late April. Putty undertakes a slow cure through carbonation and temperatures this time of year can significantly reduce the cure, along with the potential risk of damage or failure from frost. It is also worth bearing in mind the exposure of the area you are looking to point. If the area in question is subject to wind driven rains for example, a putty mortar can be highly absorbent and not as durable when compared to an NHL based mortar.
If you would like to discuss the application in more detail, please give us a call on 01208 79779.
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Cornish Lime,Brims Park, Old Callywith Road, Bodmin, Cornwall, PL31 2DZ
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