Radiant barrier for a temperate climate?
I live in the S.F. Bay area, Oakland to be exact. I am having a new roof put on and am deciding on whether to use radiant barriers or not.
I have read the articles and the comments about radiant barreirs and they are a bit too technical for me. I know the price savings is not worth it, I don’t have AC and rarely use heat, although that will likely change as I age. I am most concerned about keeping my house comfortable during heat spells of 78+ degrees which, what with global warming, will likely occur more often.
I have a huge, very high attic – could easily be built out- and currently have R-30 fiberglass insulation batts on the attic floor. I now have no vents but the last owner put in a skylight which I have been opening during the hot months, but will have probably 6 vents with the new roof. I do not have double-pane windows and don’t anticipate putting them in for several years and have uninsulated walls (1910 home). Floor insulated by having a unit below me.
1) will radiant barrier OSB keep my home cooler during sunny days?
2) currently when it is a hot day my home stays/is warmer when it is cools down at night. Hopefully getting attic vents will help cool the house faster but will having radiant barriers keep the house heat (ie from windows, walls) in and prevent the house from cooling as quickly?
3) Am I correct in NOT anticipating that radiant barriers would keep my house heat in/ warmer in winter when the inside is warmer than the outside air temp?
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