Insulation Boards

I picked up half a roll of insulation a last year to go into the loft.  I know I can handle half a roll.  

When the opportunity came I can pick up a couple of insulation boards, I did.  What a mistake!

They were wider than my car, and they are not flexible.  For a second I thought to give them up, then I remember my Swiss knife.  I cut it them to fit in the car.  Now they are in my garage, I am not sure what I am doing with them...  I will have to cut them again to get them into the loft!