jrgpots Posted April 27, 2020 Report Share Posted April 27, 2020 How high should the roof of the kiln shed be above a downdraft kiln? (nine inch wall kiln, gas fired, chimney through the roof) Should there be a deflector such as sheet metal between the kiln and roof? Jed Link to comment Share on other sites More sharing options...
neilestrick Posted April 27, 2020 Report Share Posted April 27, 2020 What's the shed roof made of? Metal or wood? Link to comment Share on other sites More sharing options...
Magnolia Mud Research Posted April 27, 2020 Report Share Posted April 27, 2020 40 minutes ago, jrgpots said: How high should the roof of the kiln shed be above a downdraft kiln? (nine inch wall kiln, gas fired, chimney through the roof) Should there be a deflector such as sheet metal between the kiln and roof? I would start with the standards for installing a wood fired fireplace in a home or commercial building. Check with you local fire department for the regulations. LT Link to comment Share on other sites More sharing options...
jrgpots Posted April 27, 2020 Author Report Share Posted April 27, 2020 12 minutes ago, neilestrick said: What's the shed roof made of? Metal or wood? concrete tile on top of plywood and tar paper. Jed Link to comment Share on other sites More sharing options...
Mark C. Posted April 27, 2020 Report Share Posted April 27, 2020 How much space is there now between the two? I assume there are wood beams holding up the plywood like 2x12s Link to comment Share on other sites More sharing options...
jrgpots Posted April 28, 2020 Author Report Share Posted April 28, 2020 I have the kiln built. I'm now planning the shelter to go over. Nothing is over the kiln right now. I was planning on 3 ft between rafters, plywood. The outer roof must be tile because of the CC&R restrictions. Jed Link to comment Share on other sites More sharing options...
Mark C. Posted April 28, 2020 Report Share Posted April 28, 2020 3 feet is plenty between kiln and rafter bottom. You could hang sheet metal (metal roofing) an inch below the rafters with some screws to make it bullet proof . The chimney penetration needs to be well thought out and wood needs to be quite aways away as stacks (chimneys get hot on outside)-you can hang some tile board on the wood an inch off the wood with screws like the metal and its really works well to keep the heat of the wood. Let some air between -its works wonders I have a bit less clearance but I covered my arch (4.5 inch soft bricks with 3 inchs of fiber) and then one layer of corrugated roofing wired to steel frame. My guess is I have 2 feet clearance but my roof lets hardly any heat out. 3 feet would be better Link to comment Share on other sites More sharing options...
neilestrick Posted April 28, 2020 Report Share Posted April 28, 2020 Yes, I'd definitely hang some sort of heat baffle from the rafters to protect the wood. Otherwise that wood will dry out over time and the flash point will get lower and lower. Tile board would work great, but keep it open at the ends so air can flow through. Don't trap the heat in the cavity. Link to comment Share on other sites More sharing options...
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