Painted breeze block pva?

[mick296]

Hello chaps,
Got some painted breeze block walls. Was gonna pva, hardwall and skim. Was wondering if i need to key the wall with something also and if bonding would be better? Thanks in advance. M

 

[megamix]

It will blow off . I would use blue grit then bond and skim or dab and skim .

 

[zolco]

As megamix says, grit then bond and skim

 

[lurpak]

If it gonna come off with pva it will with grit tooZ

Personally I’d try get the paint off. Or as much of it as possible

 

[Mouldyoldspudgun]

If they are breeze blocks just smack it up with a scutch to give it a mechanical key then pva, bond and skim

 

[paulf]

Pain in arse but I'd scutch it.

 

[megamix]

If they are breeze blocks just smack it up with a scutch to give it a mechanical key then pva, bond and skim

Mechanical key means fixing with screw and plug . Scratching the paint doesn’t mean mechanical.

 

[Mouldyoldspudgun]

Mechanical key means fixing with screw and plug . Scratching the paint doesn’t mean mechanical.

Sorry physical key rather than gluing not sure you are right with that though, screwing and plugging is fixing not a mechanical key

 

[megamix]

Dab it then second fix it with nailable plugs (mechanical fixing ) to more or less guarantee it won’t fall off

 

[megamix]

Sorry physical key rather than gluing not sure you are right with that though, screwing and plugging is fixing not a mechanical key

Yes it is .

 

[Mouldyoldspudgun]

Mechanical key means fixing with screw and plug . Scratching the paint doesn’t mean mechanical.

It’s not scratching the paint either, it’s knocking little chunks out of the block to give a key unless that’s all your arm can produce with a scutch

 

[Mouldyoldspudgun]

Yes it is .

You are wrong young fella me lad

 

[John j]

Is it gloss paint

 

[megamix]

It’s not scratching the paint either, it’s knocking little chunks out of the block to give a key unless that’s all your arm can produce with a scutch

I fully concur with you on that one . I’m right about the mechanical fixing though

 

[Mouldyoldspudgun]

Dab it then second fix it with nailable plugs (mechanical fixing ) to more or less guarantee it won’t fall off

You are talking about a different system a mechanical key for two coat plaster is the scratch your sort of fixing is not second fixing I think you mean a secondary fixing

 

[megamix]

You are talking about a different system a mechanical key for two coat plaster is the scratch your sort of fixing is not second fixing I think you mean a secondary fixing

Yes i do . I misunderstood your first statement about mechanical key . I meant mechanical fixing not key . I apologise

 

[paulf]

You are wrong young fella me lad

Always refered to scutching scratching as a mechanical key, thats what it was called by my tradesman.

 

[Mouldyoldspudgun]

Key
The roughness of a surface which enables plaster to make a mechanical bond with it
That is from the British gypsum site book

 

[Mouldyoldspudgun]

Yes i do . I misunderstood your first statement about mechanical key . I meant mechanical fixing not key . I apologise

Accepted, you made me doubt myself though I must keep a check on that fbloody Alzheimer’s

 

[Vincey]

Unifinish

 

[paulf]

Unifinish

Hes putting hardwall on as the backing.

 

[Mouldyoldspudgun]

Unifinish

You can’t put unifinish on breeze block, well I suppose you could but rather you than me also British Gypsum says Unifinish CAN eliminate the use of PVA not does eliminate it just in case it falls off I guess. Happy new year Vincent

 

[paulf]

Accepted, you made me doubt myself though I must keep a check on that fbloody Alzheimer’s

Thinking same,a key in terms of plastering has nothing to do with fixingings.

 

[carlos]

Brush hammer or needle gun as there sometimes called.

Bottom line get the paint off

 

[zombie]

All worrying about f**k all as usual!!!

Just board & skim the c**t!!!

 

[Tinytom]

Ground lat and board

 

[paulf]

Just knock it down.

 

[lurpak]

F*****g love u lot

 

[satan]

If it is gloss paint you could try a wall paper steamer stripper.

 

[Danny]

Hello chaps,
Got some painted breeze block walls. Was gonna pva, hardwall and skim. Was wondering if i need to key the wall with something also and if bonding would be better? Thanks in advance. M

Hardwall is for high suction backgrounds so that will be the wrong material.

I would be using a pregrit then bonding (wall will be low suction now) then skim

 

[Retired Spread]

Hardwall is for high suction backgrounds so that will be the wrong material.

I would be using a pregrit then bonding (wall will be low suction now) then skim

spot on Danny.....first sensible comment on here.

Hardwall is also not recommended for use over pre-grits.

 

[essexandy]

Hardwall is for high suction backgrounds so that will be the wrong material.

I would be using a pregrit then bonding (wall will be low suction now) then skim

Basic knowledge isn't it Danny?
This place does attract some doesn't it.

 

[beader]

I would scratch coat of bonding then float with hard wall as i hate floating with bonding .

 

[CeeVee]

Wall is already low suction.
Just bond the f**k*r or dot and dab.

I cant believe there are so many different answers!

 

[richyrich]

Batten, board and set if your that concerned