fiber board brick and sand

[wrs]

Hello from austin Let me start by saying how much this forum has helped and thank you to all of you. I am about to set my two inch fiber board on my hearth and have some questions
1 does the fiber board just sit on the upper slab or do i mortar it down
2 what is the best way to cut the fiber board
3 do the floor bricks sit on the sand with no mortar between or below them


Thank you any help is appreciated am shooting for dome manana sunday

Wayne

[Ken524]

Hi Wayne! Welcome to the boards.

Originally Posted by wrs

1 does the fiber board just sit on the upper slab or do i mortar it down

You don't need to mortar it down. You will have several thousand pounds of oven sitting on it. It won't go anywhere

2 what is the best way to cut the fiber board

I cut mine with my Skil Jigsaw. Wear a mask, it kicks up a lot of dust, but cuts easily.

3 do the floor bricks sit on the sand with no mortar between or below them

This has been done several ways. I simply laid my bricks right on the board and sprinkled fireclay underneath the bricks that needed to be raised a bit to be level.

I did not use mortar in between the bricks. The cracks will fill with ash, there is room for them to shift for thermal expansion, and I like the way it looks. I tried mortaring between the bricks on the vent floor and all the mortar cracked and looked ugly after a few curing fires, I redid that section and removed the mortar.

Good luck and be sure to post some pictures for us!!

[CajunKnight]

Welcome to the forum.

[wrs]

Thanks Ken your pictures look great . I am thinking about a granite ledge and already have a 12 inch cantilever . I like the way you raised the level . I am building a rumford/superior 36 . Again thanks

[Ken524]

Sounds great. Can you post some pictures?? We'd love to follow your progress.