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Our siding is 95 years old, don't know what it's made of, guessing cedar or pine? If cedar, is there any risk of bleeding when we apply EcoBond Lead Defender or are the tannins long stabilized at its advanced age? If there's still a risk, could we do an alkyd primer on top of the Ecobond?

Also, can anyone recommend an alkyd primer for the new cedar siding we will use to replace a few rotten old boards? Ideally any that come in a spray can since we have no sprayer.

I read someone saying that Sherwin Williams Duration is not recommended for cedar since too thick to breathe so will cause blistering. Any truth to that?

Thanks!
 

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retired painter
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I'm not real familiar with the lead defender primer but I'd expect that the tannins have long since bled out. I normally use SWP's A-100 oil primer.
 

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A dedicated exterior oil based primer like benjaminmoore 094 is the best to use. If knots are bleeding sap best to take a torch to them first to make the sap bleed, solidify then scrape it off. prime all sides including end grain when possible.
 
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