colour bleeding through water-based undercoat

[brokenbetty]

I'm painting the exterior woodwork on our porch which was previously stained or possibly varnished a teak colour. The porch looks about 15 years old so this was probably a factory finish but is now very weathered.

I've given it two coats of white water-based Dulux weathershield exterior undercoat and intended to use exterior satin Weathershield as the top coat. However there is a yellow stain seeping through the undercoat. It's not coming from knots. In fact it seems to come mostly from the joints and filled holes so it may be coming from a filler rather than the wood itself.

Since it's seeping through a water-based undercoat should I try an oil-based one? And if so, what should I do to prepare the current surface and can I then use the water-based satin topcoat or do I need to use an oil-based one instead?

Many thanks
Liz

 

[jondecs]

I would go for solvent based here. It's ok to put solvent based topcoats strait onto the acrylic undercoat. Myself i would put 2 coats of sovent based satinwood on now without anymore undercoats.


There are blockers like zinsser http://www.zinsser.com/subcat.asp?categoryid=1
if you really want to continue with acrylic.
Good luck.

 

[brokenbetty]

I would go for solvent based here. It's ok to put solvent based topcoats strait onto the acrylic undercoat. Myself i would put 2 coats of sovent based satinwood on now without anymore undercoats.

Well that seems straightforward - thanks jondecs

 

[Robbie uk]

Thing is though is that Satinwood will not last outside if its open to the elements. satinwood is a great finish but just not weatherproof.
Dulux all seasons masonry paint however will do a similar job and is weather proof and as its pliolite based will dry in 15 mins

 

[Zampa]

Just to confuse..Dulux do a water based satin finish for exteriors.

 

[jondecs]

Of course they don't do satin exterior in Solvent based.

Well it was a little late when I replied >>>groveling

 

[Zampa]