knots showing through

[ipjodan]

Hello.

Newly painted door frame. Frame was brand new. Used knotting solution, 2 coats under coat, 1 coat of satin. Now 4 months later knots starting to show just on one side of the jam. How can i solve this?

Thanks

 

[confidentincompetent]

Hello.

Newly painted door frame. Frame was brand new. Used knotting solution, 2 coats under coat, 1 coat of satin. Now 4 months later knots starting to show just on one side of the jam. How can i solve this?

Thanks

Hmm sometimes happens... Did you seal the knots twice ? Anyhow you'll need to seal over the knots again, touch in with undercoat twice and finish whole frame again. White knotting is available (not so dark as normal knottting) or zinnsser shellac based primer sealer. but this might be an expensive option just for one frame..

 

[ipjodan]

So i can apply the knotting solution straight onto the painted knots, then undercoat and gloss over as normal?

 

[Nige F]

Hello.


Thanks

or zinnsser shellac based primer sealer. but this might be an expensive option just for one frame..

BUT the BEST option in my opinion

 

[spice]

The knotting solution wont work on top of the paint, unless you stripped it back to the bare knots.
Go to B&Q they stock small tins of Zinnser Bin, its white, and you just paint that over the knots as they are now.
When dry, just go over again with your top coat.

 

[confidentincompetent]

So i can apply the knotting solution straight onto the painted knots, then undercoat and gloss over as normal?

Yes no problem... But I should have mentioned to abrade slightly first..


Spice wrote

The knotting solution wont work on top of the paint, unless you stripped it back to the bare knots.

Hmm cant see why spice ... I done this many times no probs..

 

[spice]

The one time I did this over the paint, I got a call a couple months later to say they have come back through.
I can see the knotting working on bare knots to stop them weeping, but when painted its much more difficult to actually get at the knots without making the knots bare and starting again.

Perhaps I was unlucky, but I never did it again, as didnt want to take the chance, this is why when I do a job and see the bleeding knots through the paint, I always apply Zinnzer bin, I have a small tine just for this, and it works a treat, I know this will definately work, so I will stick to Zinnser.