I have a small one story house in Central Florida that has vaulted ceilings inside so the only space for insulation is the 6" between the roof and ceiling. Right now between each truss there hole at the end for venting but it has no insulation currently. The roof is in good shape and is the rolled on type. During the summer the inside ceiling will get hot and the A/C runs more than it should. We recently upgraded our windows and our A/C is still running hard. We are hoping to do the project ourselves since we don't have much money but we are not sure the best way to fix this problem. Any suggestions would be great. I can post some pictures if my description is confusing.