Do these firebricks look right?

[Johnny the oven man]

Re: Do these firebricks look right?

weigh them, that is the easiest way. They look like Diatom semi insulating bricks.

[Breven]

Re: Do these firebricks look right?

The bricks weigh 8lbs each and they are 9 x 4-1\2 ...?

[Johnny the oven man]

Re: Do these firebricks look right?

normal fire brick weighs about 4kg, vs insulating bricks @ 1-2 kg.

[DrakeRemoray]

Re: Do these firebricks look right?

Those bricks sound good to me. About the right weight and cost!!

Heatstop (or better yet refmix sold by fornobravo) are true refractory mortars. The fireclay portland mix is a decent substitute, but if you can afford it, these mortars are better and I think easier to work with...

[SpringJim]

Re: Do these firebricks look right?

Sounds like firebricks to me....

I found that my used firebricks ranged from white to red....some yellow and orange.....kodachrome

My dome is an interesting mix of brick colors!

[asudavew]

Re: Do these firebricks look right?

The bricks weigh 8lbs each and they are 9 x 4-1\2 ...?

Perfect!

Move forward.

[Breven]

Re: Do these firebricks look right?

THanks everyone...now I know I have the right bricks. Can't wait to start working on the floor.

Still worried about the "Motar Clay"- then I found this note on some fireplace website "You can mix heat resistant mortar yourself. Buy a bag of mortar clay (sometimes called fire clay) and mix that into the mortar mix. The bag will usually have a suggested ratio of cement, sand and clay."