New Cedar Clapboard Bleeding ?

Hello:

Will be having new horizontal Cedar clapboards put up in a few weeks.
They will be pre-primed, front and back.

Trying to get a bit of a heads up regarding the painting of them afterwards.

The contractor said that "sometimes" there is a bit of bleeding from the Cedar clapboards, thru the primer, once they are up. He also suggested waiting a few weeks before any painting.

Questions:

a. If so, what should be done about this prior to painting ?

b. Or, will the paint (probably 2 coats of latex) cover up any bleeding "for all time" ?

c. No matter what is done, is it likely to continue to bleed again (thru the new paint) ?

Any thoughts on all of this would be most appreciated.

BTW: is this the correct Forum for Exterior painting questions, like this ?

Thanks,
Bob

 

If "bleeding" is a reference to stains penetrating through existing primer then you'd want to paint it with a top quality exterior oil or shellac based stain blocking primer before top coating with better quality exterior house paint.

Cedar is oily and I wouldn't be surprised if there was penetration and that factory primer might not contain it.

 

It is a good idea to preprime cedar and the primer should be an oil base wood primer. It is still a good idea to prime the cedar after it's installed. This will further help to prevent bleeding at cuts and were it's nailed.

Latex paint will not prevent bleeding. A good primer job will!! Dark colors won't show bleeding as bad as light colors will. Bottom line - there is seldom any problems if primed correctly.

 

Yup, re-prime with oil after install