10 years old home attic insulation

Discussion in 'Insulation and Radiant Barriers' started by lk2121, Dec 14, 2010.

  1. Dec 14, 2010 #1

    lk2121

    lk2121

    lk2121

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    Hi.

    I have a 10 years old 2 story home in Pittsburgh. My question is when I checked attic insulation and found 6-7 inches evenly spread blown-in insulation. But I heard from someone in my neighbor told me this should be enough insulation. I searched and studied found at least 19 inches of insulation on attic which should be R-49 is required. I checked temperature 1st and 2nd floor had 3-4 degree different. Do I need a more insulation or this should be enough.

    Thanks in advance.
     
  2. Dec 14, 2010 #2

    GBR

    GBR

    GBR

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  3. Dec 14, 2010 #3

    lk2121

    lk2121

    lk2121

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    So, I still need to lay more insulation. Then from the insulation fact seet I need R49 19inches. I am thinking put R30 which is 9 1/2 inch thick so combine together will be 7+9 1/2 will be 16 1/2. Do I need more insulation to make 19 inches or will be OK or need put more 2 1/2 inches?
     
  4. Dec 15, 2010 #4

    nealtw

    nealtw

    nealtw

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    Thats a good start. Keep an eye on how fast the snow melts off the roof, don't forget to make sure you don't block the vents from the sofets
     

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