Question on firebricks

[paulyboy]

Hi all,
There are 300 odd firebricks for sale on Aussie eBay which are not far up the road from me.
Here is the link:

Fire Bricks pottery kiln or other uses - eBay, Other Building Materials, Building Materials, DIY, Home. (end time 15-Oct-09 11:38:57 AEDST)

Is there any reason why these wouldn't suffice for my upcoming oven build?
Thanks,
Paul

[Johnny the oven man]

Re: Question on firebricks

Are you sure they are fire bricks? They look as they have a few red ones in there. Could have come out of a fireplace? If they are solids they may do

[paulyboy]

Re: Question on firebricks

Well no, I'm not sure at all, though I assume they are, it sounds like they might be out of a kiln or something. Don't know what the red ones are.

[david s]

Re: Question on firebricks

You need dense firebricks (heavy) not insulating firebricks (light)

[ThisOldGarageNJ]

Re: Question on firebricks

if they are truly firebrick, they will weigh about (7 lbs.) each I think,,,, can anyone weigh a brick for us