Inquiry (采购产品): spray vs. blowing I live in Pembroke. We bought our house in 1993. It was build in 1960's. I feel the roof is badly insulated (as well as the walls). What is the difference between the spray and blowing of insulation? Is one more expensive? **** Hidden Message ***** Linda Nulty 02359 Company: none E-mail: nultylin@aol.com **** Hidden Message ***** nultylin@aol.com
