I have a 12' x 24' enclosed deck attached to my house, which was built at ground level with 'ground contact' pressure treated lumber. The floor joists are 2x8x12's, 16" OC, and are perpendicular to the house. The floor boards are also 2x8's and are held to the joists with deck screws. We would now like to extend the 12' portion outward and make the present 12'x24' plus the addition, "living space". However, in order to do this, I would like to insulate the floor of the present 12x24. The thought of unscrewing those deck screws of the floor boards, in order to put insulation between the floor joists, really isn't to appealing.
So, has anybody else ever had a similar situation and what did you do? Is it very expensive/worthwhile to hire somebody to blow in insulation? I even thought along the lines of(believe it or not!) drilling some holes and using cans of "expanding foam", but I have no idea of how many sq. ft. one can would cover. Any ideas/suggestions?
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