Water Based Top Coat over Oil Based Undercoat

[jonmarkwright]

Hi All.

I have researched this job intensively and struggle to get a definitive answer.
I'm not great with painting i will be honest and have struggled with getting the right finish. I want to move to water based satin painting of my doors window ledges and skirts as I have found in past that oil based ones remain slightly tacky. Now my problem is I have bought dulux trade undercoat which is an oil based product and without thinking I have painted the door and the skirting. I want to use the water based top coat trade paint which dulux have said can be used but will require a minimum of a week air time for the solvent to dissapate. What are peoples opinion on this? Should I do this? should I continue to undercoat the remaining doors and just let them air before painting a top coat?
Any help is appreciated

 

[ic1927]

Water based satins go best over acrylic undercoat. I've found that Dulux quick drying satin can sometimes ciss (separate) when applied over oil based undercoat. However, Leyland trade water based satin covers oil based undercoat just fine in my experience, all these water based satins require two coats for a decent finish. Beware of claims that water based satinwood requires no undercoat when going over oil based gloss, you may, with good prep, get away with it, but I've recently had to strip a whole bungalow where the home owner had put Dulux qd satin straight on old oil gloss with poor prep and it was peeling off in sheets.

 

[joe-90]

I've never had a problem if you wait for the solvent to dissipate.

 

[jonmarkwright]

Thank you for the reply guys.
Before I do anymore painting I will allow the paint to air for a week before applying a top coat then a second top coat.
If this works out okay I may use up the rest of the undercoat on the doors. Dulux did respond to an email I sent them saying that you can apply a water based top coat but ensure you leave it 5-7 days. They did actually say that the waterbased topcoat will discolour over time too but will take longer to do so and not as noticeable as solvent based, this was new to me.

I still have the thankless task of painting the stairs which is a varnished stairs. I have sanded all the spindles and handrail ready but i think i will use the watebased undercoat on this. I have read varying step by step information on this my plan initially is to:

1. Apply a zinssers primer
2. apply a coat of undercoat
3. apply a second coat of undercoat
4. apply a single topcoat.

what is your opinion on this?
any advice welcome.

 

[geraldthehamster]

I have found in past that oil based ones remain slightly tacky.

Solvent based Dulux trade gloss doesn't stay tacky.

cheers
Richard

 

[emilybronte]

One year I started off by oil-based undercoating my front door,fully intending to cover it with oil based gloss, but the weather was rubbish and come October I was so fed up I just whacked two coats of water based gloss on instead. That was five years ago and it still looks really good.

I would be more worried about putting an oil based top coat over a water based undercoat.