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wooden house


Pierre's Avatar
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09-05-03, 09:19 AM   #1  
Pierre
wooden house

My house was built before ww1 and has no insulation except the cardboard put between each 1in planks ( the wall is 7in thick), does anyone knows the R value of this wall?

 
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resercon's Avatar
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NJ

09-08-03, 06:50 PM   #2  
A one inch thick piece of wood has a R-Value of about 2. Most wood framed walls with either sheet rock or plaster will have a R-Value of about 7 and with the cardboard maybe 9.

In most countries this R-Value of the wall is already taken into consideration and is excluded from insulation requirements under code. Meaning to say if the requirement is R-19 for insulation, they are assuming the wall will have a R-Value of 26 after the insulation is installed. Even if the materials used in the wall had a higher R-Value, it would not affect the requirement of having R-19 insulation installed in the wall.

 
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09-09-03, 07:12 AM   #3  
Pierre
Hello,

So my R value would be almost 7 times R2 + 2 for the cardboard equals almost 16?

 
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