Although some choose to insulate the pop top on the inside and some opt for the outside so as to ensure the most room is available, although pop tops are normally a bit cold when the wind is blowing or when its raining they can allow water in, this method of externally insulating protects against the wind and rain.
Simply measure and use duct tape to join the sections together, thereafter trim the edges and wrap a little more duct tape around the edge so as to make it firm and give some protection!
Total cost around £40 with insulation and duct tape. Enough insulation to double up and have additional left to do window insulation as-well.
