Tiling onto platerboard - primer?

[R D S]

I don't normally bother using primer and would just fix the tiles to the
dry plasterboard but i'm going all the way to the ceiling with 400x250mm
tiles.
Will there be any benefit to priming first?

I'm using a bagged adhesive in case that makes any difference.

[Jim K]

prime with what? PVA is outlawed as it tends to "undry" when it gets
wet

I didn't bother with anything for a whole bathroom with "almost to
ceiling" same size tiles as yours - 3 years on no bother at all. also
same on bare ply - no bother.

ISTR I scored surfaces with a stanley knife to give an extra key for
the adhesive to grab onto.

I used a cementitious powder adhesive

Jim K

[R D S]

On Mon, 12 Nov 2012 05:14:00 -0800, Jim K wrote:

> On Nov 12, 12:53 pm, R D S <darwento...@gmail.com> wrote:
>> I don't normally bother using primer and would just fix the tiles to
>> the dry plasterboard but i'm going all the way to the ceiling with
>> 400x250mm tiles.
>> Will there be any benefit to priming first?
>>
>> I'm using a bagged adhesive in case that makes any difference.
>
> prime with what? PVA is outlawed as it tends to "undry" when it gets wet

Flexmaster.
'A substrate primer and adhesive additive'.

> I didn't bother with anything for a whole bathroom with "almost to
> ceiling" same size tiles as yours - 3 years on no bother at all. also
> same on bare ply - no bother.

I'm tempted to not bother as I want to crack on with the job without
waiting for it to dry.
But the tilemonger recommended I mix it in with the adhesive so i will
have spare.

[David WE Roberts]

"R D S" <darwe...@gmail.com> wrote in message
news:RsqdnVfbE7mgbD3N...@giganews.com...

All I can say is that our builders tiled up to the ceiling on plasterboard
without using primer.
Can't see what difference it makes if you go up 3 feet or 30 feet as long as
the plasterboard is fixed normally.
The tile load per area of board and screws should be the same.

Cheers

Dave R
--
No plan survives contact with the enemy.
[Not even bunny]

Helmuth von Moltke the Elder

(\__/)
(='.'=)
(")_(")

[Jim K]

mmm sounds like a selling pitch? why would you want a flexible
additive on a wall? a floor maybe but a wall??

If wall flexes then maybe but seems OTT to me?

Jim K

[stuart noble]

On 12/11/2012 13:37, David WE Roberts wrote:
>
> "R D S" <darwe...@gmail.com> wrote in message
> news:RsqdnVfbE7mgbD3N...@giganews.com...
>> I don't normally bother using primer and would just fix the tiles to the
>> dry plasterboard but i'm going all the way to the ceiling with 400x250mm
>> tiles.
>> Will there be any benefit to priming first?
>>
>> I'm using a bagged adhesive in case that makes any difference.
>
> All I can say is that our builders tiled up to the ceiling on
> plasterboard without using primer.
> Can't see what difference it makes if you go up 3 feet or 30 feet as
> long as the plasterboard is fixed normally.
> The tile load per area of board and screws should be the same.
>
> Cheers
>
> Dave R

Tile adhesives are designed to cope with pretty much any type of
surface. Plasterboard is pretty close to an ideal surface I would have
thought.

[The Natural Philosopher]

On 12/11/12 12:53, R D S wrote:
> I don't normally bother using primer and would just fix the tiles to the
> dry plasterboard but i'm going all the way to the ceiling with 400x250mm
> tiles.
> Will there be any benefit to priming first?
>

No.

> I'm using a bagged adhesive in case that makes any difference.
>

Good man. Although I've used Evostik waterproof with excellent results.



--
Ineptocracy

(in-ep-toc’-ra-cy) – a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.

[R D S]

I bought it with some glass tiles that needed a solid bed, to mix with
the adhesive. It seems reasonable that it would help with this.

The instructions with it had got me wondering if priming was the done
thing, a bit of Googling suggests that many do and many don't.
So i'll not bother!