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brung99 04-26-2011 05:57 AM

Calcium Silicate Bricks for insulation
 
1 Attachment(s)
Hi All,

Im after some advice regarding some second hand bricks im thinking of using as my under-floor insulation.

These are the Calcium Silicate bricks manufactured at Kurnell Sydney over many years, but now no longer manufactured.
THEY WERE MARKETED UNDER THE TRADING NAME - "CALSIL"
They are a standard off white colour.
They are autoclaved sand and cement bricks which are lighter weight yet structurally sound.

These are the only specs I have on them.

I've attached a photo of them also.

Does anyone know if they would be ok to be used for the purpose I have in mind?

Regards,
Bruno

Johnny the oven man 04-26-2011 07:43 PM

Re: Calcium Silicate Bricks for insulation
 
They will be fine for insulation purposes.

brickie in oz 04-27-2011 12:07 AM

Re: Calcium Silicate Bricks for insulation
 
I though Calsil bricks were house bricks and autoclaved sand and lime? :confused:
I laid some similar back in the 70's.

http://en.wikipedia.org/wiki/Brick#C...ilicate_bricks

http://www.schaffer.com.au/about-us/history

.

Lburou 04-27-2011 05:23 AM

Re: Calcium Silicate Bricks for insulation
 
My insulating firebricks actually float in water (they are full of air to insulate)....Do those bricks float?

brung99 04-27-2011 05:34 PM

Re: Calcium Silicate Bricks for insulation
 
Quote:

Originally Posted by Lburou (Post 111886)
My insulating firebricks actually float in water (they are full of air to insulate)....Do those bricks float?

I havent got my hands on them yet. I'm hoping to pick them up next week so I'll let you know then. I suppose if they are no good as insulators I can always use them as normal bricks somewhere in my stand or bbq bench I'm planning on building.

Regards,
Bruno.

brung99 05-01-2011 09:33 PM

Re: Calcium Silicate Bricks for insulation
 
Ok, I picked up the bricks this morning and found that they weigh just as much as a normal brick :eek:.

Does this mean they arent true insulation bricks?

Regards,
Bruno.

brickie in oz 05-01-2011 09:37 PM

Re: Calcium Silicate Bricks for insulation
 
Sounds like a house brick to me. :rolleyes:

brung99 05-01-2011 10:07 PM

Re: Calcium Silicate Bricks for insulation
 
I'm afraid you may be right Brickie.....:(.

Oh well, i guess they're foing into the bbq bench.

Regards,

Bruno

brickie in oz 05-01-2011 10:10 PM

Re: Calcium Silicate Bricks for insulation
 
They were all the rage back in the 70's, once laid they absorb the pollutants from the air and go yellow. :(


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