I’ll be doing a copy of the house I am building now. The plans call for a stone chimney cap, but the prototype of the house built in Vermont back in ’98 has one done in what looks like poured concrete.
Take a look at the photos of the Vermont arrangement. This thing is about 28 inches overall height, including base, 39 inches wide, and roughly 13 feet long. The length is strictly for decor. There is no three-stack fireplace array below. The vent from the steel insert fireplace comes through the middle bay, and the 3″ PVC furnace vent comes through another.
I would like to plan the next one in light steel framing with sheet copper covering. The challenge is getting the waterproofing done where the four upright “pillars” meet the base.
Other suggestions, designs, sources, are all greatly appreciated.
On the other hand, how would you estimate the cost of doing it in formed and poured concrete? My guess is that they did the base slab first, then doweled in some upright resteel, and formed and poured the rest monolithically.
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light steel framing with sheet copper covering. The challenge is getting the waterproofing done where the four upright "pillars" meet the base.
I'd use copper bar for the support instead of steel. I'd solder the upright metal to the base, so the only penetrations would be the actual flues and they can be collared.
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