About to lay about 30m2 of travertine floor (after 2+ years the screed
>should be well dry by now!). The pattern is made of several different size
>tiles, which means lots of joints to grout. Spreading a slurry of grout
>acrosss the tiles is not recommneded, due to possible staining problems and
>so the joints (abnout 5mm) need to be filled individually. I can forsee this
>taking almost the rest of my natural life with a little trowel and board.
>And I can only send the family away for a few days at a time. Screwfix and
>others sell a pointing gun ( a bit like an oversized mastic applicator) and
>provided ballast or shrap sand are avoided it sounds like the ideal tool.
>Also could try SWMBO icing set.
>Any one used this for a similar job or is it as useful as a chocolate >teapot?
I used it with cement/soft sand/pva and it was totally useless. It just compresses the aggregates.