Can anyone identify this product?

[PhilboSE]

It’s the sealant that someone has used on some coping stones to try and provide a better seal than the mortar compound. I need to do similar on some of the other copings which are a bit leaky.

It’s a kind of beige/buff colour, which narrows it down a bit.

Is this the fabled CT1 (I’ve never used it) which is an available in a range of colours?

[gotoPzero]

Sorry...


Anyway, I am going with CT1 in the lovely shade of "oak" or "beige" - actually. Or a mix of both... <Bob Ross voice>

[Lotobear]

A polysulphide sealant, such as Thioflex, would be best for that application

[wolfracesonic]

Most likely polysulphide as Lotobear says, I’ve used this in the past Geocel 201, it’s not too bad to work with unlike some polysulphide which can be horrendous to tool up neatly, not too bad if it’s an expansion joint on a motorway that no one ever sees, not so much on a domestic property on display.

[OutInTheShed]

whatever it is, it hasn't worked...
Looks like too much movement for the sealant.
A lower modulus or even non-setting sealant might work.

[PhilboSE]

wolfracesonic said:

Most likely polysulphide as Lotobear says, I ve used this in the past Geocel 201, it s not too bad to work with unlike some polysulphide which can be horrendous to tool up neatly, not too bad if it s an expansion joint on a motorway that no one ever sees, not so much on a domestic property on display.

Many thanks chaps, I can get some of this in buff via Amazon (the usual sheds/jewson etc don’t stock it) and I’ll give it a go. I’ll probably bodge up the tooling but needs must.

[PhilboSE]

OutInTheShed said:

whatever it is, it hasn't worked...
Looks like too much movement for the sealant.
A lower modulus or even non-setting sealant might work.

I managed to photo the one join where it failed - a particularly big gap on some copings cut to 135. Most joints are about 4nm and are fine…unlike the ones that used the supplier’s mortar.

[hengti]

Backer rod should help in wider gaps