Using acrylic over existing old gloss oil paint

A good rub over with 120/ 150 grit would do the job, Acrylic Eggshell is self undercoating so apply 2 coats, an undercoat is recommended if you are changing colour say from white to blue but should it be white over white you will be fine. Just been using Dulux Trade Quick Drying Satinwood on a whole house......well impressed with the finish.

 

Just to add to above comment re Dulux Trade water based Satinwood from Astra ;

Picked up a tin of this last week as got loads of woodwork at home that needs a flick over !
It's all in good condition and previously painted with Dulux oil Satinwood, just now yellowed

Well I've tried a few of these quick dry water based paints and found, as a diy'er, difficult to get on with, difficult to brush out, difficult to end up with few brush marks, ok on small trims but a flat door....... difficult

However..... this Satinwood behaves like an oil based paint in my mind. Flows out lovely, settles down leaving no brush marks as long as you don't over work it. Get it on, brush out/flatten off (whatever you call it) and leave alone..... let the paint work it's magic and brush marks will simply vanish

I guess will stay white as well as no oil ? But is it as tough and will it resist knocks as well as oil based ?

Astra, what you recon my good fellow

 

Water based paints has moved on rapidly over a few years and are now far superior than the water based acrylic paints available only a reasonable short while ago, yes the early ones were prone to chipping but I can honestly say that is much a thing of the past now, thorough preparation is a must and of course and a decent paint. I have used the Dulux Diamond Satinwood and Eggshell Quick Dry paints in offices, commercial and private properties since the 2010 VOC changes and over 7 years of use it has improved vastly in opacity, flow and durability. I only use Purdy brushes with these paints as I believe does also aid a superior finish.

 

Modern water-based (in my opinion) seem to now better the old-Oil based paints avaliable.

 

I use wet and dry.. Wet... 120 grade to keep dust down. Zinsser bin undercoat as it dries in 2 hours and don't half stick. I can't use dulux quick drying satinwood or eggshell, even when warmed up prior. Just impossible to spread. Johnstones is the stuff to use. Waterbased Undercoat is ok but unless you rub down well it won't stick.

 

Cobblers! you are talking from you're arris, but you are entitled to an opinion.

 

I do wash down but unless it's really clean and sanded I don't trust waterbased undercoat over old gloss. Maybe I should but I base my opinion on a scratch test. Maybe I'm to fussy as a rep said its fine and will stick well. I have used but like I said. Easily scratched clean off. Guess that's the nature of it.

 

It will scratch off, however the paint needs 5-7 days to fully cure though, Zinsser Bullseye 123 suffers the same curse.

 

Tried Johnston's acrylic on F and B dead flat oil with decent rubbing down and it literally dropped off! I guess I will have to belt sand it off and start again!! uhhh!

 

F & B won't stick to F & B!