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Old 01-24-2012, 12:39 PM   #16
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Huge problem with Insulation in Cape style


If I read right, you've had to demo out the ceiling and attic insulation to remedy mold. Then it sounds like your fix is to continue with the SPF and make the roof line your insulation barrier. Then, when you replace the roof down the road you can place the ventilation space there by way of 2X4 furring strips and an additional layer of plywood. "Hot Roofs" are more common than one thinks and in most manufacturer's cases do not conflict with warranties.

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Old 01-24-2012, 02:17 PM   #17
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Huge problem with Insulation in Cape style


Hot/Insulated roof design is the way to go at this point if you can afford the expense of the ceiling/roof removal and spray foam.

My only point in this is that your spray foam contractor completely changed the ventilation dynamics of the roof (as I read from your posts) without knowing what he is doing.

While it is frustrating for you, I assure you it is not uncommon.

Are you sure that picture is accurate in its dimensions and representations? Are you sure you don't have a sloped section of roofing that is insulated with fiberglass batts?

Last edited by Windows on Wash; 01-24-2012 at 02:45 PM.
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Old 01-24-2012, 03:20 PM   #18
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Huge problem with Insulation in Cape style


THe roofing contractor said at this point, it is near impossible to get the spray foam out, and he agrees with a NEW spray foam guy that he works with on remodeling jobs that the only way to fix what has been done is to remove the cellulose on the attic floor, and spray foam the entire roof and make a hot roof. He does not feel that any amount of ventilation coming from the back of the roof will make up for the front top half of the roof not having ventilation.

I have to have the cellulose insulation removed to remedy the mold anyway. The mold was most likely a result of the initial disaster/mold remediation company missing wet cellulose insulation from the roof leak last year. So instead of putting more cellulose in and adding ventilation that may not work, it is probably best to do a hot roof. This is so frustrating, and all the while I have to pray we get NO snow so I dont leak!!!

Everyone thinks that what the original spray foam guy did was completely wrong. Now how do I get the HIM to pony up that he was wrong and totally screwed me and get compensated!
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Old 01-24-2012, 03:28 PM   #19
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Huge problem with Insulation in Cape style


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Everyone thinks that what the original spray foam guy did was completely wrong. Now how do I get the HIM to pony up that he was wrong and totally screwed me and get compensated!
You wont be able to. Simply because the best fix at this point is to leave in place what he did. And if you're going to leave it place, how can it be wrong?

Obviously we know the answer to the last question, just playing devils advocate to give you an idea of what you'll be up against.
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Old 01-24-2012, 03:56 PM   #20
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Huge problem with Insulation in Cape style


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You wont be able to. Simply because the best fix at this point is to leave in place what he did. And if you're going to leave it place, how can it be wrong?

Obviously we know the answer to the last question, just playing devils advocate to give you an idea of what you'll be up against.
+1

Sucks but 100% correct.

Are you sure about the layout on your drawing? Is there any sloped section of the roofing on the inside surface?

If so, you will need to either drop that drywall or remove that section of the roof to spray foam.
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Old 01-24-2012, 04:00 PM   #21
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Huge problem with Insulation in Cape style


The new spray foam guy did not mention anything about needing to do that. SHould I be concerned? He siad he would spray it right against the roof sheeting. Of course by drawing is not to scale, but that is what I see, there is no pink fiberglass anywhere in the space anymore. It was in the kneww wall and roof area, but that was removed when roof leaked last year and replaced with the foam.
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Old 01-24-2012, 04:42 PM   #22
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Huge problem with Insulation in Cape style


Take a picture of the inside of the space and the kneewall and post them up.
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Old 01-24-2012, 05:16 PM   #23
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Huge problem with Insulation in Cape style


This is one of the interior rooms, you can see the built in's, the dormer and the entry to the crawl space
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Old 01-24-2012, 05:17 PM   #24
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Huge problem with Insulation in Cape style


you can see the insualtion up the exterior wall, in the soffit
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Old 01-24-2012, 05:18 PM   #25
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Huge problem with Insulation in Cape style


showing how he blocked the the narrow opening with foam that would have allowed air in the attic area

Last edited by mymoneypit; 01-24-2012 at 05:19 PM. Reason: forgot to add picture
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Old 01-24-2012, 05:19 PM   #26
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Huge problem with Insulation in Cape style


showing how he blocked the the narrow opening with foam that would have allowed air in the attic from the soffit that is also blocked
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Old 01-24-2012, 05:21 PM   #27
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Huge problem with Insulation in Cape style


here is that picture loking up
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Old 01-25-2012, 06:30 AM   #28
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Huge problem with Insulation in Cape style


Is that 2x6 construction?

How are they planning on insulating that sloped section of the ceiling? You are going to have to drop that drywall and spray foam the underside of the roof from inside.

This was my point earlier that just air sealing and insulating the attic would never have addressed this are of the envelope/insulation layer and you would still have snow melting in that section (even as a result of radiant heat loss at those narrow insulation and low R-value sections) where you would have snow on other sections of the roof.

How much foam did he put down again and how much of it?

Those rafters are still big short circuits in the insulation system.
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Old 01-25-2012, 07:33 AM   #29
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Huge problem with Insulation in Cape style


I have no idea about the 2x 6 construction. It sounds like what it is, maybe 2x8 or something

Right now the plan on the table is to spray foam the entire underside of the attic roof remove all the venitlation and make it a hot roof. They will open up the attic slightly to gain more access to the small attic space above and I assume use boards to walk around on the rafters above.

I beleive the new foam guy is going to address the foam not being over the rafters.

I hate this idea, but feel I am stuck with it, as the foam in there now would be impossible to remove. With that being said, I also know that if I have problems down the road with the roof it will be even harder to fix now that everything will be spray foamed.


The snow was melting above where the spray insulation stopped. Based on my prblems with the roof leak before this is how I knew I would have some problems in futre when the melted snow hit the insulated part of the roof causeing it to freeze. so I wanted to address it now in conjuntion with the mold removal.

I understand that I would have heat loss thrw the roof, but in research of the right way to thave done this with the ventilation in the soffits etc, it would have added the cold air to the roof, and I would not have had the ice dam prblem that I previously had at the bottom of the roof, and now will have at the middle of the roof.

So I will now pay almost 4x as much to have this type of insualtion wihch not everyone agrees is a good idea to have.
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Old 01-27-2012, 05:30 PM   #30
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Huge problem with Insulation in Cape style


Any thoughts on if adding a vent fan would help as opposed to foaming the roof????

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