I was putting laminate down at the weekend (one single piece throught the entire ground floor!!) and I wanted to insulate it. I couldnt stretch to the expensive foil backed stuff so I laid the cheap B&Q white foam underlay and went to the pound shop and bought some rolls of 40 foot tin foil and laid that on top and then laid the laminate. Worked a treat. Anyone think this was a good/bad idea? Commence the pee taking.
Foam does not reflect radiant heat though, does it. Otherwise what is the point of putting it on loft insulation, duplex p/board, radiator foil, etc, etc, etc.
I might be wrong but...radiant heat is 'reflected', so the heat travels through the air and is bounced back by the foil - OK for lofts, rads etc where there is an air gap. Directly under your laminate with no air gap the issue would be conducted heat which the polystyrene would handle much better, as it does not allow the heat to travel from one side to another. Long time since my physics A-level though
1. Your physics are correct - the underlay will stop conduction of the heat away from the room. 2. There has not been any noticable change in phone signal - it was bad to begin with. 3. It doesnt make any noise when you walk on it, suprisingly 4. I have loads left for the turkey 5. Dont know about roasting but it is warmer! 6. As for earthing, I did get a few shocks when sliding around on the laminate and then touching the foil, but it is completely covered now so that cant happen. I covered about 20m2 in foam and foil for about £10. Compare that to the real stuff (Foil Tec Floor Insulation 1000mm x 50M at £125), who's laughing now?
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