I'm back!
Having searched and read the forum the last couple of days, I have a couple of questions with regards the floor for my extension.
1 : The DPM at the corners, do I fold it neatly or can I cut it and tape it in some way to make it nice and neat? Will it matter if its folded up?
2 : The concrete slab is to be 100mm thick, do I need any reinforcement in this? I can add fibres to the mix from the company supplying the concrete. Any recommended strength for the slab, my drawings dont specify a mix?
3: Insulation is to be placed below the slab which will eventually have roughly 75mm screed installed near the end of the job. Are there any glaring advantages I'm missing from having the insulation above the slab? I will not be installing under floor heating
4: The plastic sheet atop the insulation, does this need to lap up or just be cut to fit the space? I will also have 25mm insulation up to FFL around the perimeter to prevent cold bridging, should the sheet also cover this?
Having searched and read the forum the last couple of days, I have a couple of questions with regards the floor for my extension.
1 : The DPM at the corners, do I fold it neatly or can I cut it and tape it in some way to make it nice and neat? Will it matter if its folded up?
2 : The concrete slab is to be 100mm thick, do I need any reinforcement in this? I can add fibres to the mix from the company supplying the concrete. Any recommended strength for the slab, my drawings dont specify a mix?
3: Insulation is to be placed below the slab which will eventually have roughly 75mm screed installed near the end of the job. Are there any glaring advantages I'm missing from having the insulation above the slab? I will not be installing under floor heating
4: The plastic sheet atop the insulation, does this need to lap up or just be cut to fit the space? I will also have 25mm insulation up to FFL around the perimeter to prevent cold bridging, should the sheet also cover this?