Kilz primer or painters caulk.. which comes first?

After doing repairs to a window, I need to prime, caulk and paint.. Does the caulk stick better to primed wood or bare wood? Also considering the protection (if any) the primer will,give soaked into these bare spots. I'm using Kilz primer..
Also,, for nail heads on real siding. Is it best to use painters caulk or is there some other product better suited? Thanks..
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caulk doesnt soak into the wood to protect it. primer does. caulk 'may' stick good to the wood. it WILL stick good to the primer.
if you want a good looking paint job, always use primer first. if you want a 20+ year paint job, prime twice, paint twice. and i would suggest a coat of paint every year on hard wearing spots like windowsills. you can see from the old paint job where it wears hard. it will take you an hour or two a year.
as for nails, if you put a couple coats of primer on then paint over it, that will do plenty good. if the nail head actually makes a 'hole' then fill it with painters caulk first. there are other options but your caulk will last as long as your paint and you already have some handy.
randy

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Thanks for the help... just didn't want to do a bad caulk or paint job.. Now to get the energy .. Chuck
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