Jerry Needham
  • Geneva, IL
  • United States
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Condensation on ceiling and walls of master bedroom

Started this discussion. Last reply by Sean Lintow Sr Jun 1. 5 Replies

Posted on wrong thing first time.  Have cust who claims to have condensation on ceiling in summer time.  has 2 ac... has approx 3,000 sf two story built 1978 mst br is only room with cathedral…Continue

Closed cell on roof deck to prevent mold.

Started this discussion. Last reply by Scott Partlo Apr 20. 3 Replies

I am working with an insulation company who has already applied 2" of closed cell foam over the deck of a roof deck that has been remediated for mold twice. It was thought by spraying the foam, there…Continue

 

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Sean Lintow Sr replied to Jerry Needham's discussion Condensation on ceiling and walls of master bedroom
"The problem was probably there before, it just wasn't as apparent - sure rain isn't getting in through said ridge also? Love hot roof systems especially when you have so little room for traditional means - just make sure it is closed cell…"
Jun 1
Jerry Needham replied to Jerry Needham's discussion Condensation on ceiling and walls of master bedroom
"Thanks for the reply Daniel.  I have worked with several jobs where we did as you suggest and all seem to be good.  I like the concept of the un-vented foam filled cathedral ceiling.  Cust says no issues with the condensation prior to…"
Jun 1
Jerry Needham replied to Jerry Needham's discussion Condensation on ceiling and walls of master bedroom
"David Not sure if there are any supply vents in the ceiling.  I am scheduled for an energy audit on June 18th and will know a lot more about the house at that point.  Just trying to get ahead of the curve prior to getting to the house."
Jun 1
Daniel Baur-McGuire replied to Jerry Needham's discussion CONDENSATION ON CEILING AND WALLS OF MASTER BR
"Spray closed cell foam and get rid of soffit venting. Problem fixed! Adding soffit vents just allowed hot moist air to hit, I assume, an underinsulated and non air sealed space. Doubt they actually vented the space with baffels all the way up the…"
May 31
David Butler replied to Jerry Needham's discussion CONDENSATION ON CEILING AND WALLS OF MASTER BR
"Is it the cathedral ceiling that's sweating? Is the condensation on or adjacent to supply vents?"
May 31
Jerry Needham posted a discussion

CONDENSATION ON CEILING AND WALLS OF MASTER BR

Posted on wrong thing first time.  Have cust who claims to have condensation on ceiling in summer time.  has 2 ac... has approx 3,000 sf two story built 1978 mst br is only room with cathedral ceiling.  said the condensation started after they installed ridge vent.  says ceilings are 2 by 6.  i am thinking of removing the dry wall and spray foaming the ceiling and replacing the drywall causing an unvented ceiling.any thoughts.Jerry NeedhamSee More
May 31
Scott Partlo replied to Jerry Needham's discussion Closed cell on roof deck to prevent mold.
"You say that 2" of closed cell foam is applied OVER the roof deck.  Where exactly was the foam applied? Is this a flat/low slope roof?  If its to the underside of the roof deck?  You mention ventilation.  How about the…"
Apr 20
Donald Hester replied to Jerry Needham's discussion Closed cell on roof deck to prevent mold.
"For the roof shingle issue that is an unfortunate issue with many home inspectors that have been given improper information. Shingle color actually has a greater effect than non-ventilation. There will be some shingle degradation but it will be…"
Apr 19
Sean Lintow Sr replied to Jerry Needham's discussion Closed cell on roof deck to prevent mold.
"Way to much information is missing to even say something definitive but I can say that yes it can shorten the life of the roof... by about two weeks (shingles) http://thehtrc.com/2011/what-is-a-hot-roof  As for mold, the iso or is it exothermic…"
Apr 15
Jerry Needham posted a discussion

Closed cell on roof deck to prevent mold.

I am working with an insulation company who has already applied 2" of closed cell foam over the deck of a roof deck that has been remediated for mold twice. It was thought by spraying the foam, there would be no chance of the mold coming back.  This is a million dollar home in the Chicagoland area and homeowner is trying to sell the home but a private home inspector says the foam will shorten the life of the roof and he has scared off perspective buyers with his talk.  I have told the…See More
Apr 14
William H Nickerson commented on Jerry Needham's blog post Spray foam on attic deck to stop mold
"In Chicago you have the headquarters for Passive House US. You should reach out to them and ask if they know of anyone willing to run a WUFI software case file on your conditions. This is what that software was designed for. It could be a win for…"
Apr 13
Brad Cook commented on Jerry Needham's blog post Spray foam on attic deck to stop mold
"molds needs oxygen, moisture, food and heat (above roughly 40 degF). The SPF will essentially remove O2. If the SPF was applied to the interior of the roof deck, the 2" would be a vapor barrier. If it was applied to the exterior, you could have…"
Apr 12
Jerry Needham posted a blog post

Spray foam on attic deck to stop mold

I am working with an insulation company who has already applied 2" of closed cell foam over the deck of a roof deck that has been remediated for mold twice. It was thought by spraying the foam, there would be no chance of the mold coming back.  This is a million dollar home in the Chicagoland area and homeowner is trying to sell the home but a private home inspector says the foam will shorten the life of the roof and he has scared off perspective buyers with his talk.  I have told the…See More
Apr 7

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Jerry Needham's Blog

Spray foam on attic deck to stop mold

Posted on April 7, 2018 at 8:57pm 2 Comments

I am working with an insulation company who has already applied 2" of closed cell foam over the deck of a roof deck that has been remediated for mold twice. It was thought by spraying the foam, there would be no chance of the mold coming back.  This is a million dollar home in the Chicagoland area and homeowner is trying to sell the home but a private home inspector says the foam will shorten the life of the roof and he has scared off perspective buyers with his talk.  I have told the…

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At 11:37am on January 1, 2014, Diane Chojnowski said…

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