SOFFIT AND PROPER VENTS INSTALLATION
and BLOWN-IN INSULATION OVER EXISTING BLANKET
QUESTION FROM HARRY HICKS, COMMERCE TWP., MI:
I saw your ad in a Brighton paper. I would like a quote. Ranch built 1987. 1580 sq. ft. of living space. Currently has R-19 fiberglass batts. I was considering adding an additional R-30 of blown in material. A contractor who was going door to door in our neighborhood was pushing Certainteed Insulate S.P. but I have also heard good things about cellulose. Do you have a recommendation or preference?
It appears to me that the originally installed blanket insulation is extending into my soffits and at least partially obstructing the vents there. Does your quote also include installation of proper vents to improve the circulation?
Any information you can provide is appreciated.
ANSWER FROM THE INSULATION DOCTOR:
First I will email you a quote later this afternoon. It will give you options on both Owens Corning fiberglas and a cellulose product along with an option to have us install proper vents in which case we would remove the blanket insulation now blocking the eaves.
The general rule of thumb is to blow in fiberglass over fiberglass batts, however, you can blow in cellulose but because it is a heavier product it may tend to compress your original insulation, thereby, lowering the original R-value.
The Insulation Doctor