Hi, Im planning on adding a porch on my back door around 2.5m x 1.5m. Now at the minute the floor area is a concrete base. After drawing out a section of the new floor the current concrete base is the same level has where the sub base would be. So could I just leave it has it is and just put my sand screen on this and continue upwards or would I have to break this up to small pieces to create a granular Sub Base?
sub base
- Thread starter leekr
- Start date
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Long answer: Are you doing a proper footing for the walls? If so you will have to dig down below the concrete base, this will give you an idea of how thick it is and how stable it is underneath. But you will have to cut through it carefully to leave the bit you want to keep, intact.
Short answer: Yes.
Sand blinding and insulation on top of this concrete, then screed or floating timber floor.
Short answer: Yes.
Sand blinding and insulation on top of this concrete, then screed or floating timber floor.
Yeah I will be digging for footings. Was going to angle grind two slots and take out the middle so should be neat and tidy and not disturb the concrete thats they now.
Also if I put a bed of sand down, insulation then screen. what thickness would you recommend has I need to raise it from the concrete base (ground level) 12 inch up to meet the house ffl?
Also if I put a bed of sand down, insulation then screen. what thickness would you recommend has I need to raise it from the concrete base (ground level) 12 inch up to meet the house ffl?
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