Peeling Primer on skim (BAL APD)

[Ian]

As per Dave and Phil, dilute to 3:1 or 4:1 as a minimum for priming. Merry Christmas and happy sanding!

 

[Bolter]

There are primers that recommend 5-1 dilution. Id mix it 4-1, and try it on a small area ONLY, and see how it takes. When properly primed, you can lick your finger and touch the wall. If you see a dark wet patch, its not primed enough.

 

[Gazebo]

We often say stick to the manufacturers recomm, but clearly this is not the case here as Bal suggest neat Apd or 50/50...wonder why.????

 

[The D]

My question is when are the manufacturers going to be held responsible for the advice they give out?
If you dilute 3-1 4-1 5-1 and you have a problem they then say ahhhh we told you 2-1. To be honest I have so many issues with manufacturers I am just going to shut up.

 

[BathroomJockey]

Re: Peeling Primer on skim (BAL APD) - Update!!

Thank you all for your replies and many apologies for not getting back sooner.

Following your advice, I diluted the primer to (I estimate) between 1:6 and 1:8. I applied it to a test area of the wall and after approximately 15-20 coats the substrate was no longer taking in any moisture. I then repeated the "tape-test" using a lowish tack masking tape and still the skin came off easily.

I know have no clue what to do.

For information, when I originally primed the wall I also did the adjacent walls (not bare gypsum). When I do the "tape-test" on these walls nothing comes away with the tape (not even with duct tape).

Any other ideas? My sense of humour is begining to fail somewhat.

bJ

 

[James3]

Try giving the skim/plaster a light sanding first before applying the primer so that it has something to key too, it could be that the skim has been over trowled, I have spoken to decoraters that have had this problem with paint running off walls before... not gospel but maybe worth a try.

 

[White Room]

If the plaster has been over troweled it can glaze the plaster and would need a fine sand papering the break the surface.