UltraFire Crack Repair Kit - Fast & Durable Solution for Concrete, Asphalt & Driveway Repairs - Perfect for Homeowners & DIY Projects

Even though you cure your oven, it will still crack. Realistically, all wood fired brick or clay ovens will crack at varying degrees. These cracks are usually very thin. While patching cracks isn't necessary as it does not affect the oven function, we do include a "patch" kit with each brick oven for cosmetic fixes! It is best to apply Ultra Fire when the oven is hot.

Here is a on how to use the patch kit.