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Posted by marson on May 17, 2008, 6:59 am
On May 16, 10:32 am, Dave Balderstone
>
>
>
> > > phildc...@gmail.com wrote:
>
> > >>I've just bought a house that's about 85 years old, and I have just
> > >>sanded, pressure washed, and TSP-ed the exterior, in that order. I am
> > >>now ready to prime the house. The problem is, some of the cedar
> > >>siding has been replaced recently, and the entire exterior has been
> > >>painted with latex paint. I got *most* of it off by sanding, and
> > >>there's a lot of bare wood showing. I'd like to use an oil primer to
> > >>penetrate into that bare wood, but I'm worried about an oil primer
> > >>sticking to the existing latex paint.
>
> > >>I've searched the archives, but everything seems to deal with latex
> > >>over oil, not the other way around. I'm a bit worried, truthfully,
> > >>that I'm going to spend all this time (and money--everything's so damn
> > >>expensive these days) carefully applying a coat of primer to my new/
> > >>old house and it's going to be peeling off in 6 months.
>
> > >>Should I just sacrifice the penetration of the oil primer for the
> > >>compatibility of the latex?
>
> > >>TIA,
>
> > >>Phil Crow
>
> > > Nothing wrong with using oil primer over latex, and oil primer is choice
> > > for cedar. If the latex
> > > stuck through sanding and pw, it isn't going to come off. Might be good
> > > to apply two coats
> > > where you have bare wood. Be very serious about caulking.
>
> > Oil primer is for Bare wood. Not for going over Latex.
>
> Nonsense.
>
> --
> Woodworking links and more athttp://www.woodenwabbits.com
A well prepped paint job on cedar can last 10 years or more.
Stain on cedar: true, it will be less likely to peel, but even solid
color stains will definitely need to be redone more frequently than
paint--3-5 years?
Oil primer over latex is probably fine, but check with a paint store
professional or the manufacturer.
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