Closed foam for all exterior insulation, open foam for interior sound proofing between rooms seems the best usages.

Rip down your drywall, remove the worthless fiberglass batts and dispose then spray 3" of closed cell foam. Caulk all double studs. Caulk top and bottom plates. Remove fiberglass around windows and replace with can foam. Plastic off one room at a time. This is the only way to fix it. Otherwise live with it and sell it in the spring.

Fantastic info thanks Mike!

Appreciate the information on Spray Foam!

Timely and valuable to me.

Excelent video. just had my walls sprayed with 5.5" of open cell. I was on the fence about installing a poly vapor barrier. Insulator said I did not need it but after watching this video I will be putting up plastic before the blueboard goes up.

@SprayJones

7 ай бұрын

That's the idea. Helping. Caulk all the wood to wood seams too before the poly goes up.

@stevebonczyk3795

7 ай бұрын

@@SprayJones After the contractor finished I went through the job and found at least 30 spots that needed addtional caulk. had it not been for your videos I would more than likely not followed up on this. The roof had a complex framing plan where there were a lot double and triple rafters. This is where there was a lot of missed spots. Roof was done with closed cell.

Summary from Google Bard: " The study found that open cell foam can allow moisture to accumulate in the sheathing, especially during the winter months. Closed cell foam, on the other hand, was found to be an effective vapor barrier. The speaker concludes that closed cell foam is the best choice for use in walls in cold and damp climates. "

@spiderfoaminsulation9763

7 ай бұрын

So thus any climate

Advice needed: I am resorting 1890 Detroit home that has brick veneer. All the walls are down to the studs and I am 90% confident to put 2-3” closed cell spray foam. But my worry is 10 years down the line I discover the studs are rotting out and is due to prevented air flow.. Is closed cell recommended for old brick veneer homes in cold climates?

Link to the document you reference so we can read it as well.

Closed-cell discussion begins @12:40.

If I understand this correctly, with either type of insulation being used, an external house wrap is still needed to deal with moisture on the exterior material. Open cell good in dry climates, closed cell good in wet climates.

@SprayJones

7 ай бұрын

Correct. Your sheathing must be protected from getting wet.

@spiderfoaminsulation9763

7 ай бұрын

Closed cell in every climate

@DevilTravels

7 ай бұрын

@@spiderfoaminsulation9763 but not in every budget Until closed cell insulation is affordable to most everyone, it will fit in every climate.

This is very interesting, and very empirical, however let us not forget what all this science and effort is really for. It is all so people (ie those with with the modern mindset conceit) can wander around inside their homes in open toed sandals, boxer shorts and tee shirts, in the height of winter; whilst still having three showers a day, and washing (and then tumble drying) every article of clothing again and again simply because it has been worn for 5 minutes straight.......... all of which drives moisture into an overly warm and unnecessarily humid environment (thus severly 'steepening' interstitial humidity gradients), in a now hermetically sealed enclosure (formerly known as a home), when it is cold outside for 3 or 4 months on end. People used to simply dress up more, maybe bathe and shower a little less (tin bath in front o' t' kitchen range once a fortnight), and still hang clothes up to dry outside (on dry'ing days) whilst limiting core heating and habitation to fewer rooms, in the depths of winter. There you go, huge energy savings, millions of tons of closed and open cell foam substrate savings, and square oceans of vapour barrier sheeting savings, all in one. Kind regards, and thank you.

How do you think this applies to a garage ceiling where there are bedrooms above. Open cell was sprayed in the ceiling of my garage. Since this is not an exterior wall do you think the open cell would be fine without vapor barrier. Would it be safer just to throw the poly up?

@SprayJones

7 ай бұрын

The flooring material will have the vapor perm needed. We have done that lots.

@skyline5354

7 ай бұрын

In relation to the original post, I too had foam sprayed on garage ceiling but the floor above is quite cold in winter months. Almost feels damp

@skyline5354

7 ай бұрын

In relation to the original post, I too had foam sprayed on garage ceiling but the floor above is quite cold in winter months. Almost feels damp

@OntarioMiner

6 ай бұрын

@@skyline5354 I ended up doing a vapor barrier on the ceiling of the garage just incase.

How much closed cell foam is an effective vapor barrier? 2" min or 3" min?

@SprayJones

7 ай бұрын

Watch my video from July 19, 2023 where we answer that. Look it up in the library. "Is 2" needed to be a vapor barrier"

@russ320

7 ай бұрын

@@SprayJones Ok. Thanks

Want to know the difference between 30 ng paint and 300 ng paint? The 30 ng paint performed much better you stated. Could you explain the difference? The #s 300 and 30 threw me a bit. Great video! Closed cell foam wins again. I'd like to know your opinion on sound deadening foam....specifically how much better open cell is than closed? I have had lots of compliments on our c.c. applications that "the house feels so quiet....I never hear the trucks going by anymore...it ads such a denseness to the home we even sleep better...." we only have one rig so it's a pain to switch over to open etc. Great video

@SprayJones

7 ай бұрын

They are testing more permeable paints. So have a higher rate of flowing water vapor through them. That's all. I don't have stats on closed cell for sound because no one has paid to have the product tested extensively in a noise chamber. Noise and what you hear is very subjective, deserves it's own video.

@spiderfoaminsulation9763

7 ай бұрын

Thank you!

On that last bit, they better be careful with the recommendation to use closed-cell on the exterior. If that ends up in conjunction with any kind of vapor barrier application on the interior, that is just asking for some serious problems in that wall long-term. It must be able to dry thoroughly to one side or the other. A better idea is to use the closed-cell on the interior and then use a mineral wool or other highly permeable, water-impervious exterior insulation product that sits between the rain screen / vented cladding space and the sheathing. The data also make for a good, unspoken argument for using exterior-rated plywood in the assembly rather than OSB.

@SprayJones

7 ай бұрын

In order to have a problem you first need to have a condensing point. The SPF on the outside (sufficiently thick) will remove that. No moisture can come out of suspension within the wall.

@ReflectedMiles

7 ай бұрын

@@SprayJones That is known as the perfect-wall fallacy. Eventually, with enough time and tremors, it will not be perfectly sealed. In very cold but seasonal climates, there will always come a phase where a condensing surface is available. All it takes is ingress of moisture into that wall that does not have a ready ability to dry and catastrophe will follow. "It dries or it dies."

@spiderfoaminsulation9763

7 ай бұрын

I'm not following your comment? Did we both watch the same video? The closed cell foam performed the best....the moisture accumulated on the exterior of the osb on the cc wall from the outside...between the brick and the osb.. it didn't come from the inside. There seems to be the philosophy of "the house needs to breathe" in your comment no?" I say only the humans inside need to and an hrv unit takes care of sufficient air changes for people inside as well as kitchen and bath fan efficiency

@ReflectedMiles

7 ай бұрын

@@spiderfoaminsulation9763 Regarding material drying, that is incorrect. Building science matters if someone is building a home that is intended to last more than one generation without suffering significant problems with mold, etc., followed by structural compromise of wood materials like sheathing and major superstructure repairs / renovations being required. My reference was to the end of the study that was presented where the suggestion is made by the researchers to apply closed-cell foam to the _exterior_ of the wall as well, which would effectively trap any moisture that gets into (and inexorably spreads) within the wall. Closed-cell SPUF is indeed a great choice as an interior barrier in predominantly cold climates when formulated and applied correctly. Wall construction is never going to be consistently perfect, however, especially with the effects of time, so it is crucial that walls are designed to deal with any failures from imperfections like moisture ingress and be able to dry to the outside since they are no longer able to dry to the inside with the closed-cell applied.

@facialexpressionsfacepaint2967

7 ай бұрын

Our wall gets frost on the inside and we can feel the cold air through the external wall. So what should we do? Our home was built in 1971.

So The Exterior Moisture was causing even the Closed Cell insulation wall on the backside of the sheathing... Meaning it is a Failed Test! They Needed to put Sensors at Every 1/2" So they can see Any Progression of Moisture IF IT IS Working Through From the Interior! FAILED TEST The Exterior Moisture Causes Alarm on the Open Cell Insulation Wall Test!

@SprayJones

7 ай бұрын

James, go tell John Straube he doesn't know what the hell he is doing. I dare you..

@spiderfoaminsulation9763

7 ай бұрын

Why not wrap yourself in fiberglass Batts and go take a nap to calm down. You guys who bash closed cell foam have never experienced it!!??? Your ability to listen to the video is lacking greatly as it said the moisture came through the bricks and the cavity between the brick and the osb. Tyvek wasn't used. Normally it would be and it would have kept the outside of the osb dry. They didn't want to use the tyvek in the test because they truly are trying to make the foam stand on its own. Don't you get that? Once you get closed cell foam in your dwelling that you yourself live in....you will never bash it again. So spend the $$$ and get some!

@jameschupp2230

7 ай бұрын

@@spiderfoaminsulation9763 I Only Bashed the Test... I am a believer in Spray Foam Insulation

@jameschupp2230

7 ай бұрын

@@SprayJones Who Cares??? Is He God??? Grow a Pair. Without Multiple Sensors Throughout the Foam Insulation, You can Not Tell Which Direction the Moisture came from. It is just that simple.

Advice needed: I am resorting 1890 Detroit home that has brick veneer. All the walls are down to the studs and I am 90% confident to put 2-3” closed cell spray foam. But my worry is 10 years down the line I discover the studs are rotting out and is due to prevented air flow.. Is closed cell recommended for old brick veneer homes in cold climates?

@SprayJones

4 ай бұрын

Watch the video I have on old brick homes and SPF.