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Discuss Trowel size for 22mm sandstone flags in the Specialist Tile -Stone, Porcelain, Glass area at TilersForums. USA and UK Tiling Forum

M

M1d1

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Hi,
I am unsure what size trowel to use for the flagstone I have to lay in the hallway. They are 'calibrated' to around 22mm, going to be laid on benfer leaderflex, The substrate is the old tiles which are set in concrete and will be primed for the new https://www.tilersforums.com/forums/tile-adhesive/. It is very level and good to go. What trowel would you suggest?
 
OP
M

M1d1

Thanks for the information, so going on a 12mm notched with the https://www.tilersforums.com/forums/tile-adhesive/ spread in the opposite direction on the stone.
Is there any advantage or disadvantage to using a half round trowel for this?
 
OP
S

Spare Tool

12mm on the floor then use the flat edge of the trowel to skim the backs of the stone. You will find although it says the stone is calibrated the backs will not be flat, skimming the back not only gives better adhesion it also fills any voids and dips in the backs of the pavers..
I use a square notch but shouldn't really make much difference.
Good luck
 
OP
M

M1d1

I'm thinking about 10 or 12mm for the grout.
Which sealer would you recommend?
 
Last edited by a moderator:
OP
S

Spare Tool

Tend to use lithofin stainstop for more or less everything.
Didn't use spacers just rack of eye but joints were probably about 10mm give or take
 
OP
S

Spare Tool

WP_20180705_16_55_01_Pro.jpg
 
OP
M

M1d1

Looks very similar to what is going down. What grout did you use, I have a buff coloured brush in type. Or should I save that for outside and use normal gear?
 
OP
S

Spare Tool

That's ultra grey, looks a bit dark cuz had only just given it a final seal, I actually took the time to mask every joint before grouting, quick tickle over with the sponge then removed masking tape and didn't touch it again. Saved a lot of wash up time and left joints nice and full ;)
 
OP
M

M1d1

Ha, I would so mess that up. Did you seal the stone before grouting or do it all together at the end?
 

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