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Insulating attic no vents

cajun's picture

Insulating attic no vents (post #192501)

cajun on Mon, 08/16/2010 - 12:32
in

I will be building a new home next year in south Louisiana and read the other day about spraying insulation on the inside of the roof decking and sealing the attic so that all roof and soffit vents will be eliminate. The insulation contractor claims that the attic will stay around 88 °F. Louisiana summer are very hot and the humidity stays around 85 to 95 %.  Is this a good idea? I always heard that there should be vents in the roof and soffit to help control the temperature in the attic. 

any ideas on this subject would help greatly. Thanks in advance.

-A +A

It's known as a "hot roof".  (post #192501, reply #1 of 5)

by DanH in reply to cajun [original] on Mon, 08/16/2010 - 15:10

It's known as a "hot roof".  It's definitely legit, though whoever plans it needs to know what he's doing.  Basically the attic is made a part of the house, vs being "outside" like a vented attic.


We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy -- sun, wind and tide. ... I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that. --Thomas Edison

Dan Thanks for the (post #192501, reply #2 of 5)

by cajun in reply to DanH [original] on Tue, 08/17/2010 - 06:21

Dan

Thanks for the information

I assume that you've found (post #192501, reply #3 of 5)

by DanH in reply to cajun [original] on Tue, 08/17/2010 - 15:22

I assume that you've found that if you Google "hot roof" (with the quotes) then you find plenty of reading material (and probably a little porn as well).


We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy -- sun, wind and tide. ... I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that. --Thomas Edison

Dan Yes, I have found a lot (post #192501, reply #4 of 5)

by cajun in reply to DanH [original] on Thu, 08/19/2010 - 06:36

Dan

Yes, I have found a lot of reading material on the subject and I thinking really hard of going with a "hot roof" on the new house.

 

Thanks again 

Yeah, I think "hot roof' is a (post #192501, reply #5 of 5)

by DanH in reply to cajun [original] on Thu, 08/19/2010 - 12:33

Yeah, I think "hot roof' is a good idea, if done correctly.  Lots of ways to screw it up, of course, especially since many builders are unfamiliar with the concept.


We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy -- sun, wind and tide. ... I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that. --Thomas Edison