Hi, my BCO officer said that the air ducts can be run through either the hardcore, concrete or insulation in the slab. Personally I don't think id like to lose insulation. Does anyone have any advise on what part of the build up to run it through? Is it ok to make my existing air bricks to suite by core drilling 4inch (or smaller) vents lower down? Thanks
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Air ducts through slab
- Thread starter ashworth108
- Start date
DIYnot Local
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