DPC Solvent Stain

[JackAll]

I have an area of internal plaster into which silicone solvent based injected dpc has leached.....It is not a large area, but I don't particularly want to have to start chopping off and replastering (and anyway, it's in the brickwork behind the plaster, so no doubt it would leach into new plaster as well).

I know that emulsion just isn't going to cover it, neither is oil based undercoat. Even SBR will not 'seal' it in.
In fact Stain Block won't work either [Just for interest, I have found something better and cheaper than Stain Block for most stains....Glidden Trade Endurance Brilliant White Pliolite Based Masonry Paint].

Previous to finding Glidden, I used Aluminium Paint on a stubborn bitumen stain, after trying nearly everything else, but I doubt if it will work on this silicone stain.

Has anyone got an idea of what I can use to cover it, short of low level wall panelling or hanging a sack over it?

Thanks JA.

 

[billyo]

solven free epoxy can act as a tank coating

 

[JackAll]

solven free epoxy can act as a tank coating

Thanks.....got a product name?

I had looked at some of them (eg for floors) but the manufacturers seem to suggest the surfaces must be free of grease and 'other agents', a category in which I would think silicone belongs??

I've found a sack in my shed, so if all else fails.....

JA

 

[confidentincompetent]

Hi. Possibly zinsser BIN will hold it back. I used it recently on an internal wall that had been coated with thompsons water seal one day previously yeah I know but the BIN did dry off within15 mins, hung paper 2 hrs later.......Cheque cleared ok lol...

http://www.zinsser.com/product_detail.asp?ProductID=10

 

[JackAll]

Hi. Possibly zinsser BIN will hold it back. I used it recently on an internal wall that had been coated with thompsons water seal one day previously yeah I know but the BIN did dry off within15 mins, hung paper 2 hrs later.......Cheque cleared ok lol...

http://www.zinsser.com/product_detail.asp?ProductID=10

Thanks for this....I have seen Zinnser products in the past and thought they seemed quite good....I'll give it a whirl.

Water based paint just runs off, oil based goes all stringy, doesn't key and doesn't dry out properly, but I have just tried another paint on it which sticks without any problem......Hammerite! (which is silicone based so nothing will stick to it for about three years)....

I have just invented a tall skirting which looks like a very low Victorian half panelling.

JA