dot and dabbing platerboard on breeze block

[shogun rua]

Hi,

Would there be any problems or anything I should know, I want to dot and dab about 2sqm plasterboard onto breeze block before Tiling, the tiles are ceramics.

Cheers

Paul

 

[nybor62]

make sure you get it as flat as poss, will make the task so much easier, a good straight edge to check for flatness

 

[shogun rua]

Thx mate, do I need prime the blocks first, and how long before I can tile?

 

[nybor62]

no need to prime block work imo, 8 -12 hrs will be fine,

 

[widler]

prime if old block which has had plaster knocked off,or if its a high suction block,like a thermalite,prime with sbr

 

[White Room]

There should be no need to prime any blocks, if there dusty dampen the wall area with water where your dabs of adhesive are going....don't use pva if you decide to prime..

 

[Rich]

Make sure its flat, so easy to make life hard for yourself by putting a bow in it.

 

[shogun rua]

Thanks for all the replies guys

is 9mm plasterboard to thin?

 

[Stef]

Go for 12.5mm.

 

[White Room]

12.5mm is usually the norm for walls....If you do decide to use 9.5mm then add alot of extra dabs of dry wall adhesive..

 

[shogun rua]

if i use the 12.5mm it wont leave me much room to get the walls flush as there are already tiles above so would the 9.5 be ok if i add loads of pb addy?

 

[White Room]

As above above...

 

[widler]

There should be no need to prime any blocks, if there dusty dampen the wall area with water where your dabs of adhesive are going....don't use pva if you decide to prime..

coming from a plasterer thats weird whitebeam,ive always primed internal blockwork(if its old and dusty).
everything whats said on this forum about priming ect ect before tiling,surely the weight of plasterboard on dusty blockwork would be a issue,just saying,not bitching mate :smilewinkgrin:

 

[Stewart]

coming from a plasterer thats weird whitebeam,ive always primed internal blockwork(if its old and dusty).
everything whats said on this forum about priming ect ect before tiling,surely the weight of plasterboard on dusty blockwork would be a issue,just saying,not bitching mate :smilewinkgrin:

I did the Dri Walling course at Brittish Gypsum and was taught only to wet/dampen dusty and high suction areas that were about to sheeted using the dot n dab method with Dri Wall adhesive.....


Created on iPhone.....

 

[widler]

I did the Dri Walling course at Brittish Gypsum and was taught only to wet/dampen dusty and high suction areas that were about to sheeted using the dot n dab method with Dri Wall adhesive.....


Created on iPhone.....

know what you are saying,but i did a 4 1/2 year apprenticeship trained by very experienced plasterers(with probably over 300y experience between them) ,always got told to prime dusty walls with PVA,internally and use exterior PVA on exterior rendering,each to his own i suppose
(oh,and pva in the eighties was the plasterers dream,and i gotta be honest,never have i had a fall of in nearly 30 years of using it for plastering,even when ive used it for tiling,in the early years,never had a fall off,i would not use it for tiling now,knowing what i know)