Flexible Floor Tile Adhesive

How much movement can this stuff take?
I've tiled our just-built utility room with some Unibond flexible adhesive, and grount, designed for wood floors and it's fine, and now I'm working in the bathroom and I want to use the same stuff. The kids bedroom is next to the bathroom, and the rooms are seperated with an airated concrete block wall built on the floorboards. Since I've been working in there, I've noticed the floor has some 'bounce' to it if they are bouncing around their bedroom (as they do often). Joists are a 12' single span with these two rooms above. The block wall appears to be fine, with no cracks in the mortar.
Will I be getting into trouble with the tiled floor at a later date or should this adhesive cope with that?
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Danny Monaghan wrote:

I'll leave it to the experts to correct me, but I was of the understanding that it's ok if the whole floor moves, what you don't what is parts of it moving differentially.
If it's overboarded with ply and then tiled, as we have ours, then it should be ok...
I don't like the finish on the Unibond as a grout though, I'm going to use a different product next time ;)
Lee
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I used the Unibond too, and agree that it's not nice as a grout - a sort of dirty mid-grey and I used a suitably coloured BAL grout with GT1 admix to make it flexible. BAL does a colour which you can see at a good tile specialist so you can choose the best colour.
I pulled up the floorboards and put noggins underneath and that made the floor feel much more solid. I agree with other poster about the type of movement being relevant. The plywood sheet and the tiles themsleves lend a certain amount of additional stiffness.
But now to the serious bit. These children are evidently not being bought expensive enough trainers. Really good ones have impact-absorving cushioned soles designed to protect the joints and organs during marathons. Please stop for a moment to consider the poor wee bairns' standing among their peers and their social development. What it costs you now in top-line trainers will be saved later in cracked tiles and divisive legal battles with psychologically damaged teenage sprogs.
W.

flexible adhesive,

I'm working in

seperated with

Since I've been

it if they

are a 12'

appears to be fine,

later date or

don't what

then it

going to

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I meant "BAL does colour chart"
wrote in message

grout -

grout
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Woodspoiler wrote:

I have to lay some floortiles on a wooden bathroom floor. I plan to reinforce with plywood etc to get a stable base and have been looking at the BAL product range having been horrified at the B&Q prices for the unibond flexible adhesive ( 13.98 for 1.8 sq m and 22.98 for 3.6 sq m)
A couple of questions
Which BAL product did you use? there seem to be several that are suitable for tiling onto ply, some two part,. some one part with an additive. Several seem to be alarmingly quick setting especially as I will have many cuts to make.
How do BAL prices compare to Unibond?
I paid less than 5 per sq metre for my tiles (in France) and have 5 sq m to lay. It goes against the grain to pay nearly 7 per sq m for the adhesive. Are B&Q / unibond have a laugh at the DIYers expense? btw I have not found a French flexible adhesive, only the Brits would try to tile a wooden floor!
Maybe I should use a standard cementaceous floortile adhesive with BAL flexible additve?
Yeah Ok that is at least four questions but.........
Regards
Bob
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