I need your advice guys and girls...Rebuilding a new constructional Hearth to regs. Min 500mm out from jambs and extending min 150mm either side of builders opening. This means the hearth will be 1280mm across front with a depth of 880 from front hearth to back wall. All at a depth of 420mm to flush with floorboards. I can see only 2 options, but which one?
A/ Shuttering the area and a full concrete pour...which is a hell of a lot of concrete for little old me.
A1/ As above but include a 100mm layer of Insulation board to reduce pour amount. (this would have to be fitted min of 250mm from top of hearth to comply)
B/ Dig proper foundations and infill concrete to area to build brick retaining wall. This could then be filled with Hardcore, sand, DPM and the remainder concrete to a min depth rqd of 125mm.
The pics show me progressing Option B, a retaining wall using aerated blocks, but not layed on proper foundations, so that's no good for regs I would have thought. Also, I was not convinced about the ruggedness of aerated blocks.
Either are hard work for me as a part time DIYer so I'd appreciate your thoughts.
Ta.
A/ Shuttering the area and a full concrete pour...which is a hell of a lot of concrete for little old me.
A1/ As above but include a 100mm layer of Insulation board to reduce pour amount. (this would have to be fitted min of 250mm from top of hearth to comply)
B/ Dig proper foundations and infill concrete to area to build brick retaining wall. This could then be filled with Hardcore, sand, DPM and the remainder concrete to a min depth rqd of 125mm.
The pics show me progressing Option B, a retaining wall using aerated blocks, but not layed on proper foundations, so that's no good for regs I would have thought. Also, I was not convinced about the ruggedness of aerated blocks.
Either are hard work for me as a part time DIYer so I'd appreciate your thoughts.
Ta.