Breeze block walls and plaster

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mo7

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Probably a question for a brickie and a plasterer...

I am having some internal walls built made of breeze block.

The wall has been built and I am sure is structurally OK but it has lots of gaps in the mortar (i.e they have not gone round filling it all in and making it flush.

The builder has said they will go round filling in any big gaps but stopped short of saying they will go round making every joint perfectly flat and full.

One of the reasons he says is that the little gaps will give the plaster something extra to stick to (I am probably gonna go hardwall/bonding over plasterbard).

I thought the wavy lines on the blocks were to assist the plaster but appears not.

So my questions are

Is there a technical reason to insist on full joints or is it an aesthetic thing?

Is it BS that the gaps will help plaster? I can see the argument that the gaps will help the plaster as obviously it will go deeper into the wall.
 
mo7 said:
Probably a question for a brickie and a plasterer...

I am having some internal walls built made of breeze block.

The wall has been built and I am sure is structurally OK but it has lots of gaps in the mortar (i.e they have not gone round filling it all in and making it flush.

The builder has said they will go round filling in any big gaps but stopped short of saying they will go round making every joint perfectly flat and full.

One of the reasons he says is that the little gaps will give the plaster something extra to stick to (I am probably gonna go hardwall/bonding over plasterbard).

I thought the wavy lines on the blocks were to assist the plaster but appears not.

So my questions are

Is there a technical reason to insist on full joints or is it an aesthetic thing?

Is it BS that the gaps will help plaster? I can see the argument that the gaps will help the plaster as obviously it will go deeper into the wall.
Click to expand...
It's an odd one,if they had laid the blocks with a bed of mortar then there would be no gaps in the joints,sounds like a quick job,bang bang ,cash in the pocket but that aside if its only minor ,I wouldn't worry, dampen down lightly and plaster away .ps don't use bonding, all been equal and good use hardwall and skim same day
 
usually brickies will only flush point blockwork when its not being plastered..ie. commercial unit, where the blockwork is painted..
 
johniosaif said:
It's an odd one,if they had laid the blocks with a bed of mortar then there would be no gaps in the joints,sounds like a quick job,bang bang ,cash in the pocket but that aside if its only minor ,I wouldn't worry, dampen down lightly and plaster away .ps don't use bonding, all been equal and good use hardwall and skim same day
Click to expand...

I have words to describe them and they are not polite!

But as it is being overseen by a surveyor i am satisfied it is being done ok structurally if not nicely.
 
Joints should be full anyway if left but it's good practice for everything to be pointed for the sake of the few minutes it takes to run the bucket handle over it. Anything visible gets pointed if I'm doing it, some jobs require it besides the fact it makes it look that much nicer. Normally get an apprentice on it good practice for them!
 
sometimes you just have to trust , that mental people know what there doing , mo7 what do you do for a living ?
 
Last edited:
mo7 said:
Probably a question for a brickie and a plasterer...

I am having some internal walls built made of breeze block.

The wall has been built and I am sure is structurally OK but it has lots of gaps in the mortar (i.e they have not gone round filling it all in and making it flush.

The builder has said they will go round filling in any big gaps but stopped short of saying they will go round making every joint perfectly flat and full.

One of the reasons he says is that the little gaps will give the plaster something extra to stick to (I am probably gonna go hardwall/bonding over plasterbard).

I thought the wavy lines on the blocks were to assist the plaster but appears not.

So my questions are

Is there a technical reason to insist on full joints or is it an aesthetic thing?

Is it BS that the gaps will help plaster? I can see the argument that the gaps will help the plaster as obviously it will go deeper into the wall.
Click to expand...

Are you that runner that eats quorn?

Breeze block walls and plaster

or that fat lass off the square? :RpS_confused:

https://s1300.photobucket.com/user/olican1/media/moslater_zps684e9231.jpg.html
 
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