Plaster skim corrode copper?

[Fredstudio]

Can finish plaster/ plaster skim corrode copper, if any is dropped on a pipe and not cleaned off?

 

[PrenticeBoyofDerry]

It would not be a concern.

 

[ScottishGasMan]

Not generally no. Lime based cements in the other hand are an issue, but general finishing plaster should be ok

 

[Fallout]

thanks just noticed pipes coming down from the ceilings plastered up to as well.

 

[Fallout]

what could be used as a sealant/ mastic to seal around a pipe if it hasn't been plastered up to?

 

[ScottishGasMan]

General decorators caulk should be fine

 

[muggles]

Decorators caulk

 

[Fallout]

View media item 96503View media item 96504View media item 96504
Are holes like this I am wanting to fill

 

[Fallout]

What would be best ?

 

[Fallout]

Guessing decorators caulk?

 

[dilalio]

I take it that's not supplying gas?!

 

[Fallout]

Why would that make a different?

 

[dilalio]

It wouldn't.
Just that gas should be sleeved when passing through walls.

 

[Fallout]

Its passing through a floor.on one.pic a boxing in on the other

 

[dilalio]

So is it gas then?
Still good practice to sleeve it!
Not essential but... Just my observation

What's going to be done with the block wall? Dot and dab?