Gloss painting over varnished skirting & doorfames

[cannaefixit]

Hello
My living room is now looking lovely with its new coving (thank you Tex-Mex, Wonderdust and Masona!) but I now want to gloss-white the skirtings/architraves and door frames. I varnished these 6 years ago (in Ronseal Antique Pine) and like them well, but am thinking of sub-letting so now think I should do the 'Magnolia-and-white-gloss' thing.
Q: Will the varnish keep the resin out or should I rub down the knots and treat them with knotting solution?
advice, as always, appreciated
cheers

 

[kozzymodo]

Varnish should keep out the resin from the knots but for 5 minutes extra work a layer of knotting is a good idea.

 

[cannaefixit]

Varnish should keep out the resin from the knots but for 5 minutes extra work

a layer of knotting is a good idea

.

Is that apply knotting solution over the varnish or rub it down over the knots

 

[kozzymodo]

You will need to sand the varnish first to provide a key for the paint, then seal knots with knotting.