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The Natural Philosopher
 
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Default How thick can floor tile adhesive be?

Jon Weaver wrote:

My screed floor looks flat, but its certainly not.

Comparing the high and low points, there is upto 10mm difference in
height.

I was originally going to put some self leveling down, but my
neighbour (who is a tiler) talked me out of it. Instead, he said that
I could vary the thickness of the adhesive to level the floor.

Is this suggestion OK? If so, whats the maximum thickness of adhesive
that I can lay?



IF you use the rapid set, and mix it thick, up to about 25mm works. Its
***ing expensive tho.

Big danger is getting too big voids underneath, or havoing it **** up
through teh inter-tile gaps. Hvae a tile spacer ready to scrape between,
and have a sponge and bowl of water (one wipe, rinse sponge, repeat ad
infinitum)to clear any cement off the toles BEFORE IT SETS cots its a
bugger if it does.

Worthwhile laying a taut string for first limne to get levels roght aand
directions right, then use small spirit leveles or coross strings to get
each tile even and flat.

Take your time, and let each mix of cement go rubbery before going near
the bit you just laid. That way it won't slump.




I have now layed 51 tiles and used 40kg of Adhesive.. I rang around
and found that a 20kg bag varies from £16 to £23.. However, I found
that Wickes are doing a 12.5kg bag with 20% free for £8.50, which
works out 30kg for £17.

I did noticed that 'normal' (i.e non-rapid set) is MUCH cheaper.. Is
'rapid set' any better? Most 'rapid' products are not as strong as
their 'non-rapid' couterparts.. Would this be true for Floor Adhesive.
I am not under any time constrains and doing my floor in blocks of 20
tiles with a whole day in between and I have no plans to walk on the
floor until its COMPLETELY set. If I used 'non-rapid' adhesive, would
the finish be any better or worse than 'rapid'?


Th eproblem with normal set is simple. On thivk beds the tiles slowly
'slump' overnight, and the adhesive oozes up through the slits.

Also, you need to clean adhesive off fairly quickly, and it is best from
teh pint of view of no disturbing teh slates, yo do it just as the
cement is going off. That takes HOURS with standard cement. Which means
that if you slate by day you will be up all night cleaning.

I pay the price for what I can do the best job with. That happens to be
rapid set.
:-)

a