Need advice on chimney and outer arch construction

[Jayson]

Originally Posted by david s

Last time I looked at high temp silicone it contained carcinogens so I opted for a weak vermicrete mix instead.

Try to make your decorative arch both wider and higher than the inner one. This will make it better to work the oven when reaching in.

Thanks david s appreciate your point about the high temp silicone. I like your idea of the outer arch being wider. I have angle cut the bricks for the side arch so that the arch opening as already wider at the front. The clay bricks I am going to use for the decorative outer arch are curved on one corner which will make it wider again. I'll post some pics when I'm done.

[Jayson]

Originally Posted by SableSprings

The small air gap you'll have between the firebrick and facade will be much more effective if you don't fill it (especially with hi temp silicone). Also on the lateral chimney support, I just put in a couple extra pieces of rebar down the holes in my side chimney bricks and again at an angle on the outside embedded in the insulation cladding (perlcrete for mine). Seemed to tie it all together quite nicely.

Thanks Mike, I'll be sure to add some side support. Love the Dragons Den by the way!!

[jeckysmith]

I am going to build a new home and i joined this community to get advice about chimney and outer arch construction. Please help me, advices are appreciated.