Interior Door - Water-based products over existing oil-based

[mkurtis]

I am looking to repaint a wood six panel interior door. The door was previously painted approximately 15 years ago with what I believe is Benjamin Moore Satin Impervo, an oil-based product. The paint is still in good shape except in high wear areas around the door knob and edges. I would like to repaint the door, preferably with a water-based product I can spray with a Fuji Q5 system.

I'm unsure what preparation would be required to put a water-based product over the oil-based. Does the door have to be stripped to bare wood? Assuming proper preparation, would a product like Kem Aqua Plus be a good selection for this application? Both existing color and new color are white.

 

[tjbnwi]

Clean well with Krud Kutter

Sand well with 240,

Clean again,

Prime with, Smart Prime, Pro Bond, Stix, etc....

Sand between coats,

If you really want to use KA+, use Surfacer inlue of primer,

Sand between coats,

The surfacer is a very bright white, shooting clear KA+ probably MRE over it makes a really nice white finish.

Sand between coats.

Paint, I'd use Pro Classic water alkyd.
https://www.sherwin-williams.com/homeowners/products/proclassic-interior-waterbased-acrylicalkyd

Tom

 

[mkurtis]

Thanks for the great reply Tom.

Krud Kutter has two products, one called Gloss-Off Prepaint Surface Preparation another that is Pre-Paint Cleaner/TSP Substitute. Are either of those good choices?

 

[tjbnwi]

Plain old everyday Krud Kutter cleaner. The goal is to remove any dirt/oils from the surface prior to sanding. I do not use any of their paint prep products.

Tom

 

[Pnw painter]

If the trim has deep brush marks I’ll sand with Vlies. It looks like a scotchbrite pad and does and excellent job of abrading all the nooks and crannies and typical sandpaper misses on surfaces with deep brush marks.

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