I have an original dual fuel (propane and wood) Gozney Dome. I store it outside but secured under a proper cover. It's now 4 years old so I assume the warranty is no longer valid. I have a inquiry out with Gozney but not expecting anything favorable. 

This year upon firing it up both propane and gas, I noticed the temp barely broke 500 with propane and wood stalled out at 700. With both fuel types the floodlr registered only 300-400 degrees which is very low for my understanding. There was also 2 minor cracks across the floor between the holes for fuel sources. I had seen traces of water before but nothing significant. 

Watching YouTube videos of repairing I came across a few people who unassembled the dome to replace with biscotto stone.

I've not ordered said stone, but opened it up to see the damage. Appears subfloor insulation is extremely wet and starting to disingrate. Same with lower dome insulation around the sides. \*see pictures.

I've seen one person comment ISO 2300 ceramic board can be used to replace this. Not sure if anyone else has tried this? I am waiting for biscotto to respond if they still sell the original dome floor replacement as I couldn't find in the website.

Has anyone else dealt with similar issues or have any guidance to this problem? I'm quite handy and would love to be able to fix this or should I cut my losses? 

Dome Dual Fuel Floor & Insulation replacement