#11  
Old 10-01-2013, 03:28 PM
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Cool Re: UK oven build - help with fire cement

Gudday
Sounds like a good plan to me.
Remember Hydrated Lime could be called Builders Lime not agricultural Lime
Regards dave
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  #12  
Old 10-01-2013, 07:06 PM
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Default Re: UK oven build - help with fire cement

Contact Bookemdano, his is a UK builder and he could help you material sources.
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  #13  
Old 10-01-2013, 11:15 PM
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Default Re: UK oven build - help with fire cement

Thanks guys for all your advice.

I need to get on with it this week whilst there is a break in the weather, and the soft sand / hydraulic lime / portland cement is an easy option.

I'll mix this 2:1:1 unless anyone tells me different?

This forum is fab :-)

Here is my build so far, the bit on the right is my bbq, and the space under is my wood store.

I'm new to all this so bear with me!



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  #14  
Old 10-01-2013, 11:41 PM
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Default Re: UK oven build - help with fire cement

I could be wrong, but by the look of your photos the dome is sitting directly on your supporting slab. While your floor looks adequately insulated your dome is not. You will lose a substantial amount of heat via conduction into your supporting slab. It may not be too late to remove the first course and insulate under them.

Last edited by david s; 10-02-2013 at 01:00 AM. Reason: Damn auto correct
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  #15  
Old 10-02-2013, 12:00 AM
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Join Date: Oct 2013
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Default Re: UK oven build - help with fire cement

Thanks - I did a lot of asking around and was told this would be ok (the entire dome will be covered with 4" vermicultie and rendered).

I've actually built a bit more than in these pictures, so it would be a real pain now to have to remove them.

Will it really loose that much through the bricks into the floor?
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  #16  
Old 10-02-2013, 12:19 AM
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Default Re: UK oven build - help with fire cement

Quote:
Originally Posted by samcoombes85 View Post

Will it really loose that much through the bricks into the floor?
Any extra insulation will be fruitless if you dont insulate underneath the ENTIRE oven.
Pull it down and build it properly.
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  #17  
Old 10-02-2013, 12:25 AM
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Default Re: UK oven build - help with fire cement

Damn.

I know what I'll be doing tonight then :-(

Back to the drawing board!
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  #18  
Old 10-02-2013, 12:30 AM
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Default Re: UK oven build - help with fire cement

Its better to see the faults early in the build rather than posting after the build that, "my oven takes ages to get to temp and takes a forest of firewood to keep it warm" which seems to come on here all the time.
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  #19  
Old 10-02-2013, 01:55 AM
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Default Re: UK oven build - help with fire cement

Indeed - thanks again.

So my mix of 3:1:1 fine sand, cement and hydrated lime will be ok to stick it all together?
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Old 10-02-2013, 02:06 AM
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Default Re: UK oven build - help with fire cement

Quote:
Originally Posted by samcoombes85 View Post
Indeed - thanks again.

So my mix of 3:1:1 fine sand, cement and hydrated lime will be ok to stick it all together?
Ive always used propriety mixed refractory glue in oven builds, if anything fails then its not my fault for using the wrong bog ie, home made bog.
But its always used with very thin joints under 5mm.
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