Joined: July 2004
||Posted: 15 July 2016,09:28
First of all, those oversize gaps are in breach of the British Standard, but, apparently, many installers seem to think it's OK. That's because no one gets properly trained any more.
Secondly, neither of the products you uggest are ideal. The first is certainly better than the second, but even that, as a one-part polymeric, is not really the best choice.
If the blocks are not going to be cut to fit, then look to use a good quality 2-part resin mortar or a 4:1 mix of sand/cement with added SBR to cope with the natrrow end of the tapering joint.
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