New unground plaster thickness question

[OWSwimmer]

Having a new underground pool installed and wondering what the maximum thickness that the plaster coating can be. The tanning ledge zero-entry area is to be all plaster but was formed for stone. This leaves a 2' wide by 0"- 2" deep "step" space to be filled. The contractor is planning on filling it with plaster which means the plaster will be up ton 2" thick in some places.
Does plaster have a maximum thickness when applied?
How about minimum temperature to apply and cure?
thanks

 

[AQUA~HOLICS]

Niches are set 3/4” above Shotcrete for the application of Pebble Tec.

5/16” is minimum for Pebble Tec.

Lowest Temp. sorry I’m in SoCal and have yet to have that concern come up.

 

[wireform]

I think you will get into trouble with a robotic cleaner with your design.

 

[OWSwimmer]

Niches are set 3/4” above Shotcrete for the application of Pebble Tec.

5/16” is minimum for Pebble Tec.

Lowest Temp. sorry I’m in SoCal and have yet to have that concern come up.

Thanks for the reply. Looking for "maximum" thickness that plaster can be applied.

 

[OWSwimmer]

I think you will get into trouble with a robotic cleaner with your design.

Thanks. Not sure why a robotic cleaner would be a problem.

 

[ajw22]

Will that entrance area always be submerged? Plaster should not be used on surfaces that are not always submerged.

Temperatures below freezing are a serious problem for applying pool plaster, and even temps around 40 are somewhat problematic. There are additives that can help the plaster cure at colder temperatures, but they tend to have a significant impact on the long term lifetime of the plaster. These issues can be avoided by enclosing the pool in a tent or enclosure of some kind and heating the whole area for several days during and after plaster is applied, though you hardly ever see this done.

Lets ask @onBalance about maximum thickness.

 

[ajw22]

Thanks. Not sure why a robotic cleaner would be a problem.

The robot will climb out of the pool through that area.

 

[onBalance]

Having the plaster thickness 2 inches thick is some areas is not a problem and won't be a problem.

 

[wireform]

AJ ^^^^^ said it before I can get to answer.

 

[OWSwimmer]

The robot will climb out of the pool through that area.

That can't happen. Theres a 3 foot drop off that's not really evident in the pic. Thanks!

 

[OWSwimmer]

Will that entrance area always be submerged? Plaster should not be used on surfaces that are not always submerged.

Temperatures below freezing are a serious problem for applying pool plaster, and even temps around 40 are somewhat problematic. There are additives that can help the plaster cure at colder temperatures, but they tend to have a significant impact on the long term lifetime of the plaster. These issues can be avoided by enclosing the pool in a tent or enclosure of some kind and heating the whole area for several days during and after plaster is applied, though you hardly ever see this done.

Lets ask @onBalance about maximum thickness.

Thats a zero entry tanning ledge sloping to a drop off. water level is supposed to come to about 1' of the shallow edge when pool is full. This would leave a small amount of area of plaster that won't always be wet. Do you think that may be a problem still?

 

[wireform]

That can't happen. Theres a 3 foot drop off that's not really evident in the pic. Thanks!

The 3 foot drop makes no difference for a climbing robot then it can get to the next level.

 

[ajw22]

Do you think that may be a problem still?

Yes, you will end up with a crumbling edge in a few years. Put tile or stone in the area that will not be submerged and let the plaster butt up against the tile. Just like is done with waterline tile for the same reason and purpose.

I suspect that is the way that area was originally designed for.