Silicone sealing tiles to shower tray - leave a nominal 2mm gap of more?

Discussion:

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Cordless Crazy

2009-01-07 12:50:58 UTC

As ye title suggest...

is it best to stop the tiles 6mm higher than the tray and silicone
nice thick bead (installation guidance always says thicker is better)

OR

tile space the bottom row up 2mm off the tray and silicone seal a 6m
fillet along the face?

And colour..

red tiles, white tray..... clear or white sealant

--
Cordless Crazy

NoSpam

2009-01-07 14:27:50 UTC

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What I did was to leave a 6mm'ish gap, once the silicone in this had
cured I bedded a guadrant molding in silicone over the top - worked well
and avoids too much of a water/mold trap

Dave

Stuart Noble

2009-01-07 17:03:26 UTC

Permalink

Post by NoSpam

What I did was to leave a 6mm'ish gap, once the silicone in this had
cured I bedded a guadrant molding in silicone over the top - worked well
and avoids too much of a water/mold trap
Dave

What is the quadrant made of? Can you get rubber/silicone beads?

NoSpam

2009-01-07 17:40:23 UTC

Permalink

Post by Stuart Noble

Post by NoSpam

What I did was to leave a 6mm'ish gap, once the silicone in this had
cured I bedded a guadrant molding in silicone over the top - worked
well and avoids too much of a water/mold trap
Dave

What is the quadrant made of? Can you get rubber/silicone beads?

There are plastic and metal ones - any tile dealer will have them
hanging-up with the edging strips and listellos

fred

2009-01-07 20:45:43 UTC

Permalink

I'd say 5 or 6mm.

The logic is that silicone has a limit to its elasticity and say 0.5mm
of movement on 2mm is 25% whereas the same on 6mm is only 8%. Less
stretching makes for a more reliable seal.

Post by Cordless Crazy
And colour..
red tiles, white tray..... clear or white sealant?

Hmmn, an interesting choice, what's the grout colour?

--
fred
BBC3, ITV2/3/4, channels going to the DOGs

Cordless Crazy

2009-01-08 08:50:44 UTC

Permalink

Post by Cordless Crazy
As ye title suggest...
is it best to stop the tiles 6mm higher than the tray and silicone a
nice thick bead (installation guidance always says thicker is better)
OR
tile space the bottom row up 2mm off the tray and silicone seal a 6mm
fillet along the face?
-
I'd say 5 or 6mm.
The logic is that silicone has a limit to its elasticity and say 0.5m
of movement on 2mm is 25% whereas the same on 6mm is only 8%. Less
stretching makes for a more reliable seal.
-
And colour..
red tiles, white tray..... clear or white sealant?
-
Hmmn, an interesting choice, what's the grout colour?
--
fred
BBC3, ITV2/3/4, channels going to the DOGs

Am looking at a smoke grey, therefore me thinks the clear/transluscen
one would be better.

Will go for a 5mm gap, once cured will then do a 6mm fillet.

Have also pumped the tapering 5mm gap between the tray and th
no-more-ply wall with good grade silicone as an extra over measure
Buggered if water thinks it is getting thro that once all installed

--
Cordless Crazy

fred

2009-01-08 17:27:49 UTC

Permalink

Post by fred
-
I'd say 5 or 6mm.
The logic is that silicone has a limit to its elasticity and say 0.5mm
of movement on 2mm is 25% whereas the same on 6mm is only 8%. Less
stretching makes for a more reliable seal.
-
And colour..
red tiles, white tray..... clear or white sealant?
-
Hmmn, an interesting choice, what's the grout colour?
--
fred
BBC3, ITV2/3/4, channels going to the DOGs

Am looking at a smoke grey, therefore me thinks the clear/transluscent
one would be better.

I think you're right, white might look a bit intense.

Will go for a 5mm gap, once cured will then do a 6mm fillet.
Have also pumped the tapering 5mm gap between the tray and the
no-more-ply wall with good grade silicone as an extra over measure.
Buggered if water thinks it is getting thro that once all installed!

Good plan.

--
fred
BBC3, ITV2/3/4, channels going to the DOGs