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Post by dunnes2002 on Jul 5, 2013 12:02:23 GMT
Hi,
just about to make an order and wonder whether 230 x 114 x 64mm bricks stood on the side (64mm) is good enough for an insulation floor?
This will be stood on good old council paving slabs with the firebrick on top
Any advice gratefully received
Cheers
Mike
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petec
WFO Team Player
Posts: 232
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Post by petec on Jul 5, 2013 12:05:54 GMT
Hi there
I followed Terry's advice and I found standard thermalite concrete insulation blocks to be cheap and very easy to use for the insulation layer between my concrete block plinth and the firebrick floor. It was easy to get a very level surface for the screeding and firebrick floor this way.
Good luck whichever route you go .
Cheers
Pete
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Post by dunnes2002 on Jul 5, 2013 12:37:42 GMT
i did read this in a few places but got a little confused, are we talking about standard breeze blocks? or are there different types?
Cheers
Mike
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petec
WFO Team Player
Posts: 232
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Post by petec on Jul 5, 2013 12:49:27 GMT
Hi
not all concrete blocks are suitable....
its a very lightweight and highly insulating concrete block made by pumping lots of small gas bubbles through the concrete.
You can even use an old saw to cut it.
Most builders merch will stock them - they go under various brand names though.
Cheers
Pete
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Post by dunnes2002 on Jul 5, 2013 12:50:48 GMT
these sound a better option, will give my local merchants a ring to find out
Thanks for the advice
Mike
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Post by swatson on Jul 5, 2013 14:09:37 GMT
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Post by cannyfradock on Jul 5, 2013 16:35:17 GMT
Dunnes The link that Swatson gave are perfect. They're lightweight and B & Q keep them dry (easier for cutting and less moisture to remove from the oven before fully firing.) The forum also has a discount account with Jewsons .....some have saved a lot of money using this account for general building materials.....others find them a similar price as other merchants even with the discounts. Here's the link to the details... ukwoodfiredovenforum.proboards.com/index.cgi?board=membersdiscounts&action=display&thread=82 Terry |
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Post by dunnes2002 on Jul 8, 2013 11:40:38 GMT
thanks for the replies swatson and canny, they seem to be out of stock everywhere around me so will try the builders merchants. They certainly look a better option. Will have to change the design again now to put a layer of bricks around the insulation to make it a little more athestically pleasing. Not that i had a design.....  |
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Post by swatson on Jul 8, 2013 12:41:46 GMT
No problem that's what this forum is all about!
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Post by dunnes2002 on Jul 10, 2013 11:42:59 GMT
another question on the bricks im afraid, should i stand these on their side or lay them flat? As the base are only standard council flags im thinking it may be better to stand on their side to ensure the heat doesnt get into the flags too much.
Will hopefully just lay them on a sand bed and build a small 'retaining' wall around them. Should i use standard cement for this retaining wall or 1:1:1:4, cement, lime, clay, sand?
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Post by bookemdanno on Jul 10, 2013 16:22:49 GMT
Most lay them on their side, to provide 100mm of insulation.
You can lay them normally, to provide 230mm of insulation, obviously better, but you need to allow for that in the build, and you'll need far more.
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Post by dunnes2002 on Jul 14, 2013 20:20:03 GMT
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Post by cannyfradock on Jul 15, 2013 7:56:32 GMT
dunnes
Most insulation blocks are suitable for the thermal layer under the hearth. The most important facture's to look for are..lightweight, thermal and fire-resistant. I can only see the data sheet on the "Wicks's" block which does have these requirements.
Terry
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Post by dunnes2002 on Jul 15, 2013 18:53:17 GMT
Thanks again, no more questions ordered thermolites from dewson with the forum discount
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Post by edinburghman on Nov 11, 2014 12:38:09 GMT
Dunnes The link that Swatson gave are perfect. They're lightweight and B & Q keep them dry (easier for cutting and less moisture to remove from the oven before fully firing.) The forum also has a discount account with Jewsons .....some have saved a lot of money using this account for general building materials.....others find them a similar price as other merchants even with the discounts. Here's the link to the details... ukwoodfiredovenforum.proboards.com/index.cgi?board=membersdiscounts&action=display&thread=82 Terry These are 7.3kg - am I mistaken in thinking that it's OK to use these, as I'd thought it was the REALLY light 'thermoblocks' that were most suitable...? |
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