"Yes, a good quality latex house paint should perform really well. You may need a primer, depending on what paint you are going to purchase, so check with someone in the paint department or read the labels.
I think I'd lean more to a good quality paint to protect the OSB, as the adhesives used in manufacturing it are not terribly friendly towards adhesion or penetration of normal stains, be they oil or waterborne.
Shell Guard (in this case the concentrate) would be the Borate recommended for that type of project, and M-Balm is the epoxy/wood consolidator that would create a barrier to protect from air and water penetrating the wood. Check…"
I'm in agreement with Charis, it does look like there's some areas where nature is taking over in the decay process of your logs. I'm not sure what you have available in your area there and how deep the damage goes, but…"
"Luc, we always recommend getting several frees samples that look "close" to you to try on your home, as they'll all look slightly different on each home or on-line typically. Each species will take stain at a slightly…"
There are several environmentally friendly finish removers on the market, and samples are available through most folks who sell finishes (including us!). Most are slower to work then the old school, corrosive type…"
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