acrylic prima

[mozzy]

hi lads,

i'am a 19 yr old apprentice and i was wondering when should you use acrylic prima and why is it used?

hope 2 hear from you guys soon, thanks james

[Dave]

James have a read of this>>>>>>> http://www.tilersforums.co.uk/tile-a...s-primers.html

[mozzy]

thanks dave, so everythings sealed dust etc and helps against moist absorption and it gives grip between the adhesive and the substrate in which its being applied to. also it doesnt cause a chemical reaction with the substrate so they bond together unlike pva which reacts with the water of the sticky. i understand thanks again dave

[Dave]

It's all a learning curve james..........i think you will come on leaps and bounds by reading the forums...

[Leatherface]

Hi mate
primarily used as a more reliable sealer than PVA
Especially useful on gypsum plaster when cement based adhesives are used to stop the adhesive reacting with the plaster and blowing.
Still useful on new plaster with most adhesives diluted 1:3
Acheive a better bond strength

[Dave]

Hi mate
primarily used as a more reliable sealer than PVA
Especially useful on gypsum plaster when cement based adhesives are used to stop the adhesive reacting with the plaster and blowing.
Still useful on new plaster with most adhesives diluted 1:3
Acheive a better bond strength

Depending on the brand Nick.....some are applied neat and 2 coats etc.....

Best to read the instructions on the bottle james........

But as Nick sez..primarly used for reaction with gypsum and portland cement based adhesives.......thus causing Ettringnite failure....

[doug boardley]

and James, some old school builders etc will try and tell you that PVA is fine, it most certainly isn't and stand your ground on this!

[Leatherface]

Depending on the brand Nick.....some are applied neat and 2 coats etc.....

Best to read the instructions on the bottle james........

But as Nick sez..primarly used for reaction with gypsum and portland cement based adhesives.......thus causing Ettringnite failure....

SOS if misleading
just going off make I use
still won't go far wrong with acrylic primer diluted 1:3 compared to any ratio of PVA
rEGARDS

[Dave]

Too right...PVA is a big NO NO.......not misleading Nick .. i was just adding to your comments....I presume you were commenting on primer G..?

[Leatherface]

Too right...PVA is a big NO NO.......not misleading Nick .. i was just adding to your comments....I presume you were commenting on primer G..?

Yes pal

have always found to be very reliable

I adjust the dilution ratio according to the application !
Regards

[Dave]

I was always a BAL guy..as you probs remember......But i must say.. i am deffo using mapei more and more now.....since CTD started stocking it........ I love adeselix p9..

[Leatherface]

I was always a BAL guy..as you probs remember......But i must say.. i am deffo using mapei more and more now.....since CTD started stocking it........ I love adeselix p9..

Love P9 myself, have started using a lot more, especially on site work. Plenty of open time, not much slippage, still able to grout a lot quicker than tubs, especially on cold damp sites in winter. Tubs never seem to go off.
P9 white is lovely to use on walls, for any size tiles

[graham31]

and James, some old school builders etc will try and tell you that PVA is fine, it most certainly isn't and stand your ground on this!

I ask a joiner friend of mine to box in some pipes,and he said he'd use MDF.I asked him to use ply and the joiners reply was"MDF will be fine just PVA it"

Well i know not to PVA anything but he thought he could tell me my job

Anyway he's gony box in with ply instead of gyproc deff not MDF

[Diggy]

Acrylic is also used on Anhydrite screeds , 2 coats generally , BAL 2 neat coats , others ( names gone out of me brain at the mo - 1st coat diluted 50/50 , 2nd coat neat.

Also used to prime a floor prior to laying UFH like Devi matting type , helps it stick lovely , wants to be done day before tho' for best results.

Diggy