Sandstone Pointing
Brickwork, drystone walling, render are a few subjects covered here. Click here to post questions and get answers

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ssutherland
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Sandstone Pointing

by ssutherland » Thu Jul 14, 2011 9:50 am

I have some water ingress from cracks/failed pointing in a sandstone wall. As far as I understand I should be using a lime mortar for repointing based on a purely lime and sand mix but I keep seeing different mixes recommended, varying from 1:5 to 1:3. Assuming I can get hold of some lime can someone give me an idea for the correct procedure for mixing the lime mortar and the mix I should be using?

welsh brickie
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sandstone pointing

by welsh brickie » Thu Jul 14, 2011 6:46 pm

Mix 4:1 sand and lime.You can buy a bag of hydrated lime from most builders merchants

ssutherland
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Joined: Thu Jul 14, 2011 9:46 am

by ssutherland » Fri Jul 15, 2011 9:25 am

4:1 it is then. I tried the big diy stores with no luck but I think I've now found a local builders merchants that stock hydrated lime.
Many thanks

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