Sika Mortarfix for repointing -- any experiences?
I found this at Home Depot, and if it can save me trouble and make repointing our chimney easier and not compromise final quality, I'd like to use it. It's in a caulk tube, which is much easier to apply, rather than a bucket or bag (like grout) that I'd have to apply with a hawk and trowel, etc. -- it evidently has some latex in it -- is it something like caulk or does it look like mortar? Can I use it for complete repointing or is it only for spot fixing?
And a further question about repointing tools: I see the mortar tools, with curves in anywhere from 3/8 to 5/8 width, but then I see a specific "repointing tool" that's *flat*, at 3/8". Should I aim for a flat fill for the grout, which would suggest a flat smoothing tool, or should it be slightly indented, which would suggest the curve?
Thanks in advance for any help on these questions.
Here is a link that might be useful: sika elastomeric mortar fix