Plugging a drafty fireplace that we don't use. This is meant as a permanent solution, rather than something I might want to remove and put back occasionally. Basic steps here:

- Buy thick insulation board.
- Measure fireplace hole size.
- Subtract between .5 inches and one inch from your measurement so you have room for error, since the hole probably isn't perfectly square, and to account for the blanket wrap. In my case I subtracted .5 inches but .75 or even one would have been a bit better.
- Cut the insulation board on a cutting board of some kind, piece of plywood, etc.
- Confirm the cut insulation board fits in the hole, sanity check on your measurements.
- Clean up any insulation scraps with vacuum, get rid of cutting board.
- Lay out blanket, ideally squarish, that is at least a few inches wider (in its shortest dimension) than the insulation board's diagonal.
- Lay the insulation board shiny side down. This is the side that will be facing out. We want to reflect heat back into the house.
- Do a diaper wrap as shown in video. Nail each blanket corner to the back. Doesn't have to be super secure, just pinning it in place til we stuff it in. I used a hammer at first but you can just push them in probably.
- Before insertion I had to chisel off some jagged edges from the masonry. Make sure to vacuum again.
- Shove the diaper-wrapped insulation board into the hole. Carefully punch it in. Want to make sure you don't break the board with an errant karate chop.
- Take some thin foam insulation tubing and stuff up any remaining small gaps. You can use a butter knife to help roll-squeeze it in. Either the thinner business end or the thicker handle end can be useful depending on the gap size.

#fireplace #energysavings #heating #insulation #energy #heat #winter #heatingbill #draft #drafty #warmth


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