I am re-siding my 95 year old house with Hardie Plank siding this spring. I would like to add some rigid insulation under the siding to improve the overall comfort level and reduce heating costs. I have been told that installing rigid insulation directly over the house wrap will cause moisture to collect on the sheathing and cause it to rot. Does anyone have experience with this?
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Greetings Rick51, As a first time poster Welcome to Breaktime.
This post to your question will bump the thread through the 'recent discussion' listing again.
Perhaps it will catch someones eye that can help you with advice.
Cheers
Thanks, I'm not sure if the subject is of little interest or my technique needs work. Any advice would be appreciated.
Rick
I'm a novice.......at least we can keep the thread alive for a bit. A recient thread might be helpful. Rigid foam under drywall. I had asked piffin about using the rigid foam board on the outside of the studs instead of inside. Anyway do an advance search for thread 51800.1 My question is #14 answer is # 15. The thread itself was good for reading content. Maybe it won't entirely answer your question.... hope so anyway.
When you click on advance search, look at the very bottom. You input the thread #
Edited 1/8/2005 8:59 pm ET by Nyukx3fan
Thanks for the tip. Every little bit helps.
Rick
I don't know the answer as it depends on your climate and I suspect the type of insulation/vapor barrier of the existing wall.
I suggest you take a look at the appropriate version of Joseph Lstiburek's Builders Guide to Cold, Mixed, or Warm Climates, Details for Design and Construction. Contains a ton of great info for energy conservation design and a lot about moisture movement. Moisture movement is not intuitive, so suggest you do the research and not give up based on the level of response here.
Good Luck.
Hey thanks for the information. I will check out the book you recommended.
Rick