Insulate block-off plate?

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Easy Livin’ 3000

Minister of Fire
Dec 23, 2015
3,024
SEPA
I've already stuffed Roxul tight around the liner and the smoke shelf, so when I add my block-off plate, I can either just use a sheet of steel tight to the lintel, or I can add a layer of Roxul (3 inches thick) and have the plate 3 inches closer to the top of the stove with a right angle bend in the front to cover the insulation. Should I bother with the layer of insulation above the plate since I already have the smoke shelf stuffed?
 
Personally I would place the block-off plate as low as possible and fully insulate from the plate up.
 
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Personally I would place the block-off plate as low as possible and fully insulate from the plate up.
How do you insulate on the topside of the plate if you only have access to the fireplace from the underside?
 
Pack the damper area around the liner with roxul insulation before installing the block-off plate
 
Pack the damper area around the liner with roxul insulation before installing the block-off plate

Yup- Roxul is fairly stiff and can suppott itself pretty well. In my case I filled as much as I could, placed the last layer on the plate then pushed it into place and fastened.
 
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