I have a 1980's timber house on piles. The house has existing foil underfloor insulation. In some places the foil is ripped etc. and since the floor is cold underfoot on a winter's morning (even in the non-ripped areas), I want to install Expol or some other product.
Now the questions:
- Since Expol is supposed to be installed closely to the underfloor, do I need to remove the foil? Or can I install the Expol beneath the foil?
- How can I best remove the foil, since it was placed at time of construction from the top side? Just cut it loose?
- Could I get double-insulation benefit from having both in place, or is the R-value reduced because the Expol will be less-than-perfectly situated?
Anyone done it this way before?