As Steve begins taking his students through the wood window sash refinishing process, he explains why they are doing what they are doing, and it’s not as simple as you might think.
It has to do with old paint versus new paint, understanding how and why old paint fails and how new paint responds to that failure.
Why strip the old paint off a sash? So it doesn’t compete with the new paint system. When the old (as is) competes with the new, the old always loses. And Steve explains why
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