Edge course - Bonding

Patio flagstones (slabs), concrete flags, stone flags including yorkstone and imported flagstones.
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Calla
Posts: 3
Joined: Tue Oct 11, 2016 4:20 pm
Location: Middlesbrough

Post: # 111659Post Calla

Hi thanks for the help on this great site, I am laying a patio and have followed the video of laying a block edge course, instead of blocks I am using a 100mm2 stone but I can't get them to bond to the 6:1 sharp sand cement base the next day I can lift the blocks straight up with little effort any tips? I have also haunched the blocks on the back side ,cheers 🤔
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rxbren
Posts: 394
Joined: Thu Jan 05, 2012 11:41 am
Location: northampton

Post: # 111660Post rxbren

use sbr in the mix and/or slurry the botttoms of cobbles with sbr when laying
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Calla
Posts: 3
Joined: Tue Oct 11, 2016 4:20 pm
Location: Middlesbrough

Post: # 111662Post Calla

Cheers for the quick reply mate just picked some cementone sbr up, gonna go for another attempt tomorrow
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rxbren
Posts: 394
Joined: Thu Jan 05, 2012 11:41 am
Location: northampton

Post: # 111663Post rxbren

Make sure you keep your kit clean and wash out the mixer after each mix as it goes off quick and solid if any drops on top of any slabs clean it off quick
There is some info in the main site about it
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Calla
Posts: 3
Joined: Tue Oct 11, 2016 4:20 pm
Location: Middlesbrough

Post: # 111664Post Calla

Thanks again, I have read on the main site about mixing the sbr slurry mix, what quantities would you recommend to add when adding the sbr to the mortar mix?
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