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Using spray foam with a metal roof. What is the options?

by LiveModern Webmaster last modified Aug 13, 2014 01:01 AM
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by last modified Aug 12, 2014

We just bought a log cabin that had a very bad shingle roof. We have pulled off the shingles and replaced the roof with a metal roof. I left the old wood deck in place and covered it with a vapor barrier before putting down purlins on which the metal roof is attached. There is not much insulation in the roof as it is. It currently has very old compressed fibreglass batons laying on the ceiling. I am thinking of using a spray foam to replace what is there but have questions around the best use of spray foam. Should I apply the spray foam directly to the inside of the roof decking and seal the whole addict or should I just apply the spray foam on the ceiling the same way the current fibreglass is applied?




 

 

We just bought a log cabin that had a very bad shingle roof. We have pulled off the shingles and replaced the roof with a metal roof. I left the old wood deck in place and covered it with a vapor barrier before putting down purlins on which the metal roof is attached. There is not much insulation in the roof as it is. It currently has very old compressed fibreglass batons laying on the ceiling. I am thinking of using a spray foam to replace what is there but have questions around the best use of spray foam. Should I apply the spray foam directly to the inside of the roof decking and seal the whole addict or should I just apply the spray foam on the ceiling the same way the current fibreglass is applied?

Location of insulation is primarily dependent on the location and climate zone of the home. Typically in cooler climate zones, you want the insulation on the ceiling so that the...


 

 

 
 
 

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