Gojuryuben Posted October 3, 2016 Share Posted October 3, 2016 HI, Can any one in the know tell me how deep I need to be grind out the old mortar ready for re-pointing. I've read various items that suggest anything from 10mm to 25mm ? Cheers Link to comment Share on other sites More sharing options...
spilldig Posted October 3, 2016 Share Posted October 3, 2016 Go just deep enough to scrape the old cement out that has become unbonded. Link to comment Share on other sites More sharing options...
spider1 Posted October 3, 2016 Share Posted October 3, 2016 (edited) HI, Can any one in the know tell me how deep I need to be grind out the old mortar ready for re-pointing. I've read various items that suggest anything from 10mm to 25mm ? Cheers 10 to 12 mm and dont go any deeper. Use a firm like gunpoint if you have a lot to re/ point Brush out joints and uni bond prior to repoint if anything loose in joints Edited October 3, 2016 by spider1 Link to comment Share on other sites More sharing options...
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