Painting precast slabs/wall

[neltf]

Gents , our precast wall/slabs paint are coming off & needs to be cleaned/old paint flakes to be scrubbed off & then repainted.What is the best paint for doing this? Will micatex do?
someone suggested to add little bit of plaster key to the paint so it sticks to the slabs?
Any ideas advice much appreciated

[Rolf]

Well they are raw concrete which would be the reason for the original paint coming off in the first place. I would imagine plaster primer or bonding liquid at a minimum would be required before painting.

[neltf]

These guys recommend Plascon Roofseal

[Mad Manny]

Plaster Primer is the correct answer.

But I painted mine, raw, with Roof Tile paint (Deep Green) & they have never peeled.
Because the precast is now covered with creepers or plants I haven't been able to repaint for years.
Still looks good.

[neltf]

Plaster Primer is the correct answer.

But I painted mine, raw, with Roof Tile paint (Deep Green) & they have never peeled.
Because the precast is now covered with creepers or plants I haven't been able to repaint for years.
Still looks good.

Thanx Manny...would you suggest to add/mix little bit of Plaster Primer in the paint? Think the ratio was 2L primer to 20L paint...

[Toks]

Forget about any primer. You need to put one coat of bonding liquid, allow to dry and them paint.

[Mad Manny]

Thanx Manny...would you suggest to add/mix little bit of Plaster Primer in the paint? Think the ratio was 2L primer to 20L paint...

It's like adding 2SO to your diesel.
It's stupid, wasteful, doesn't work & is not advised.

[neltf]

It's like adding 2SO to your diesel.
It's stupid, wasteful, doesn't work & is not advised.

Lol okay cool...thanx Manny

[neltf]

Forget about any primer. You need to put one coat of bonding liquid, allow to dry and them paint.

Thanx

[jelo]

But I painted mine, raw, with Roof Tile paint (Deep Green) & they have never peeled.
Because the precast is now covered with creepers or plants I haven't been able to repaint for years.
Still looks good.

Me too. And we had turf soil with rising damp, even that didn't get the stuff to fall off.

[neltf]

Me too. And we had turf soil with rising damp, even that didn't get the stuff to fall off.

Which brand did you guys use?

[Mad Manny]

Which brand did you guys use?

I used Prominent Paving Green...

[neltf]

I used Prominent Paving Green...

And what color should the walls match?
Color of roof - or house or front wall?(in my case Palisades)

[jelo]

Which brand did you guys use?

Either Prominent or Warrior, can't recall.

[jelo]

And what color should the walls match?
Color of roof - or house or front wall?(in my case Palisades)

Colour matching is a woman's job.

[neltf]

Colour matching is a woman's job.

Wife gave task to me...everything inside house is hers , ouside is mine...Don't want my house looking like a smarty box

[jelo]

Wife gave task to me...everything inside house is hers , ouside is mine...Don't want my house looking like a smarty box

Match precast wall, palisades and house roof and gutters. House walls must contrast.

[neltf]

Match precast wall, palisades and house roof and gutters. House walls must contrast.

Then it will be a light brown then...

[Rolf]

Forget about any primer. You need to put one coat of bonding liquid, allow to dry and them paint.

Bonding liquid is a primer in a sense.

[Mad Manny]

Bonding liquid is a primer in a sense.

So is bubblegum...