Bathroom Remodel - Questions About Code On 2 Vapor Issues - Kitchen & Bath Remodeling - DIY Chatroom Home Improvement Forum

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Old 07-11-2011, 05:46 PM   #1
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Bathroom remodel - Questions about Code on 2 vapor issues

Hi I have a house built in 1920 and a bathroom with a clawfoot tub. I have taken out the walls and put in insulation and will put backerboard on the bottom of the walls (for the tile) and green drywall for the top. To be compliant with code my town tells me to look at the 2006 international building code for answers to any questions. I look but am not finding answers.... so:

Question 1: If I have a window that opens to the outside in the bathroom, to be compliant with building code, do I have to put in a fan to exhaust to the outside or is the window sufficient?

Question 2: For insulation in the walls, I have Kraft paper insulation with the paper faced into the house. Is this sufficient? Should there be no paper, just bare insulation? Or should there be a vapor barrier, like plastic between the insulation and the backerboard/green drywall?

THank you!


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Old 07-13-2011, 05:13 AM   #2
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1. In Ohio the window is sufficient in older houses, in new construction they want a vent fan. I would look into putting a vent fan in though. Need to get that water out of there!
2. I am pretty new to the site and this has been argued a million times. Some guys want closed cell foam (spray foam) some say the fiberglass, others want a vapor barrier, others don't I guess it depends on were you live and what the weather is like. I personally plan on using fiberglass with a vapor barrier.


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Old 07-13-2011, 06:24 AM   #3
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thx mikeylikesit580!

Yeah I recognize there is conflicting advice. I was more wondering what the inspector, who would be using the International building code 2006 as his guide, would be wanting to see. I've decided to use the kraft paper with no plastic, and put in a powered vent in the room.

thx again...
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