You guys have given me a lot to think about. I’ll try to answer some of your questions:
It’s not that I MUST vent. It obviously stood for 77 years w/o it, but as I said, it gets HOT on my 2nd floor. And doesn’t cool off at night. It can go up to 75 in the day, down to 60 at night and my upstairs will stay in the mid 80’s, even with several windows open all night.
But I was going to add insulation anyway, so maybe I’ll do that this w/e. As a conservative first step, and see if that helps. Do you think that it will really help keep the heat from radiating down?
Why am I planning to replace it? I’ve been advised several times by many others (this stuff isn’t my bag)that it’s reaching the end of its life. There are a couple slates missing, and few that are chipped, etc…For instance, our home inspector, when we bought it, thought it had about 7 yrs before we should consider replacing it on our own terms rather than be forced to. He had no financial motive that I can think of.
I believe I’m about to get a lecture that I should get a second opinion from someone who specializes in slate, and that it may just need maintenance. Feel free to help there. I’ll listen.
Thanks in advance. you guys have been VERY helpful so far. (I never knew that slate “breathes” on its own, for instance.)