I bought a 1 story ranch home in Southern Louisiana that is very typical style but the old man who built the house went nuts in some areas. For instance there is crown molding in all closets as well as the entire house. Every room is built off 14'x14', bedrooms (14x14) all 3 with 7'deep by 14'wide walk ins, living room 14x14 and open on one end to dining room 14x14, master is 28x19 (only room not 14 besides den). So over all the house has a very large floor-plan (3600 sqft).
So now I am about to re-roof and I noticed that on the driveway and any drain area there is a lot of gravel from the shingles. When you are on the roof you can see a lot of exposed fiberglass too. The roof has a fairly low pitch but is huge, almost 60 squares so it is going to cost me a ton to do it all.
The attic is where am lost. The attic itself is pretty cool even in summer, compared to my old attic. Every wall and ceiling in the attc is covered in reflective foam-board, only the floor (of the attic) has exposed beams with fiberglass insulation laying between the beams as it should.
I noticed that every seam in the attic foam-board that you can see is sealed with duct tape and it makes my attic look like some kind of cooler. I cut some out to see the roof bottom and to see if the foil was on both sides, it is but there is also fiberglass insulation on top of the foam-board where I thought airspace was. So if you put a whirly vent on the roof it does not reach the hot air below the plywood/shingles on the roof, just the attic air.
All of this had to have been installed when the house was built since it is in the smallest of spots in the attic. There are even supports that look like he foam-board was put on first then the support studs for the roof.
A contractor we talked to wanted to put ridge vents to release the hot air from the attic but with insulation between the studs then sealed with foam-board I do not see that allowing the air to rise out the top as it should.
My thought was any roof shingle I install will suffer the same fate as what I have on now. I see it overheating and releasing the gravel and having a shortened life. Only thing I can think of is a metal roof so I do not have to worry about this heat issue. Like I said my attic is cool but roof surface seems to me like it can not breath.
Any tips? Do I have to remove that reflective foam-board or can I leave it and use something else cheaper than metal roof? With the size I have to do metal is going to strap me.
Sorry for the long winded post, did not know how to ask without all of that ;)
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