I live in central florida. I plan on installing R-30 insulation to the floor of my attic. How effective is it to install reflective insulation to the attic on the roof side? Is it worth the price?
yes or line it with alum foil,
No dont add to the roof. The under side of the roof needs air flow and you will trap moisture, causing mold and rot. Make sure you have plenty of vents under your eaves and take your extra money and buy a solar powered attic fan (or 2 ) Mark
the best floor insulation is the two on the roof or the 1st floor ceiling, (floor of the attic), no longer the two. If that is already on the ceiling, the attic is vented to the exterior, and insulating the roof could make little or no distinction. Laying one extra 'blanket on the floor is a thank you to bypass in case you prefer to enhance. Insulating a roof will boost the summer season temperature of the roofing, and could adversely result the life of a few components.
do not insulate your roof,it will cause the roof to get VERY hot,this will damage the roofing,shorten its life,,the temp in your attic should be within 3-4 deg of outside temp,,,insulate the floor Only and have plenty of ventilation
