waterproofing under the base ,?? on my idea

[RichC]

Re: waterproofing under the base ,?? on my idea

Hi Merlyn, my base consists of 4 retaining walls(in a box shape) with a concrete deck about 140mm from the top. This effectively gives me a box which I filled with vermicrete and then built my oven on. Mine, when finished will also have no roof on it and my climate is very wet. I intend drilling some holes in the deck from underneath so that any water that gets in can get out, downwards, rather than pooling in there.

Rich

[merlyn]

After the 26 inches of rain in 24 hours I have to rethink my base .. The base is done and I will not be placing a roof over the finished oven .. No room . I thought I would pour a 2 inch thick slab [platform] the shape of the finished dome on top of the base . under this I would put some roofing material [[this is heavy material used for flat roofs not tar paper]] . so the concrete platform won`t allow water to soak into it from the base ..Then some aluminum sheeting over the platform before putting down the the 3 inchs of fiber board and fire brick after that ..... I would also seal the outside edges of the raised concrete platform . I was thinking about vermiculite concrete but a regular pour with gravel would be stronger for the weight of the dome , and I don`t feel I need the xtra insulation .any and all coments are appreciated .. For those you that have answered my ? before thank you . I had hoped to start this several months ago but life sometime dictates other needs ..