slipped brick in vent arch

[bluecrow]

Hi,

After about 20 cooking sessions a brick in the vent arch slipped. I noticed small mortar cracks open on heating, but then last night the brick moved a lot. I pushed it back in this morning.

What is the fix here? Do I make a tapered brick out of two bricks to fill the space more fully?

I have hardibacker screwed to the gabled house framing and 3 " of FB blanket over the vent arch, but all is removable and the arch is accessable.

(I can't find bulk vermiculite so I haven't finished the enclosure).

thanks in advance, Don

[nissanneill]

Re: slipped brick in vent arch

Hi Don,
several option are available, but to retain the balance appearance of your facade, I'd drill a coupe of holes up through the depth of the brick and screw it to the ones above it. You can sink the bolt/fastener below the surface and mortar up the evidence.
You could make up a tapered brick, even slightly taper the loose brick and re-mortar it back in place with a slightly wider joint OR
using high temperature silicone, glue it in place (the type that model car racers use on their exhausts that resist up to around 960˚F.

Cheers.

Neill