No, cutting the cable will cause the cable to fail and will also void the warranty. If too much cable is left, you need to install it in a buffer zone or re-install the cable closer to the perimeter of the heated area.
Yes, with these limitations: Use MAPEI adhesive Ultrabond ECO 350, Ultrabond ECO 360, Ultrabond ECO 373 or Ultrabond ECO 399. Also, follow MAPEI’s Technical Data Sheet instructions and use a 1/32" U-notch trowel. Finally, expect 60 to 90 minutes of flash time before installing the LVP/LVT.
Mapeguard UM is approved for exterior applications with some limitations; please consult the Technical Data Sheet for details. Mapeguard UM 35 is not approved for exterior applications.