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Hi. I'm the proud owner of a new Weil McLain PEG-50 boiler that was lovingly installed by Charles Garrity ("Charlie from wmass"). He spent two weeks banging around my basement, including a couple-day stint in my miserable crawlspace running a gas line to my kitchen. I figure I owe it to him to insulate my pipes so that the boiler runs as well as it possibly can for years to come. So, I bought a bunch of 1" thick sections from a local supplier and have already wrapped up all the easy sections. Before I keep going, I have a couple questions.
On the sections I've wrapped so far, I can still feel heat coming off the pipe. When I put my hand on the insulation, it feels pretty warm. It's obviously not burning hot like an exposed pipe, but it's definitely warm. Is that normal for 1" thick insulation? I just wanted to check before I put up the rest of it.
I thought I read somewhere that you can buy pre-insulated hangers, but the plumbing supply house near me had never heard of them. Am I crazy or do they actually exist? What are they called? I only need five or so, so I can order online if necessary.
Finally, do I need to prep the pipes at all before I wrap them up? Most of my pipes are probably a hundred years old, so they're covered in rust. I was wondering if I should sand them down and paint them before I tucked them in. (Charles, I know I asked you this question when you were here, but I forget what your answer was.)