I need to keep the heat in my bedsitting room so I want to block off a window and a doorway with 2" or 4" preferably solid foam, the kind that has foil both sides. Do you have any spare from a completed job? Even bits will help and I will patch them if necessary.
If anyone has any foil blanket insulation that would help too. Thank you in advance if I am lucky. All good wishes from Corinne