Painting - Exterior Cedar Clapboards Painting ?

Hi,

Since there doesn't seem to be a separate Exterior Painting Forum, I'll post here. Hope this doesn't violate any forum rules.

In the midst of having new Cedar horizontal clapboards being put on house.

They are pre-primed (with something ?) on both inside and outside.

Questions:

a. Not really "dirty", but guess I will have them pressure washed first.
Good idea ?
Anything I should probably know first about pressure washing Clapboards ?
e.g., can it ruin or take off the primer ?

b. Have no idea how long Cedar clapboards may have been sitting around in lumber yard.
Should I wait some period of time for them to "stabilize" (or perhaps bleed-out) before the painting (latex paint) ?
If so, how long ? Sure do want to get them painted this summer, though.

c. If not necessary to wait, how long should I wait after the pressure washing for the surfaces to be satisfactorily dry, etc. ? (assume typical 75 deg. summer days) Will a day or so be enough if dry to the touch ?

Thanks,
B.

I wouldn't pressure wash them, unless they are real dirty
A nice clean and rinse wouldn't be a bad idea though (TSP or what the paint co suggests)

Technically, you should wait "3 days"
But that takes into consideration all types of weather/climate
In good sun, nice, warm, days...could be a day

I'd also recomend repriming them with an oil base wood primer. That will insure that none of the tannins bleed thru the latex.

"I'd also recomend repriming them with an oil base wood primer"

Good point with the cedar