I’ve been an energy auditor for 25 years in Michigan. All the expressed concepts and practices expressed by the presenter are 100% accurate and factual. I simply tell everyone that “Foam kills 8 birds with one stone”!

During the lumber price spike, we went from going with 2x6 for the exterior walls to 2x4 and completely filled the cavity with closed cell. Saved on the total cost, got the insulation, and added strength.

By the way, great video and super professional performance of workmanship !

Another great video. The basement of our house that was built in 1916 was sprayed with closed cell 3 weeks ago. The walls are concrete. There was a lot of leakage in our rim joists. Now there’s a huge difference in temperature. It used to be cold down there. Now its nice and toasty. Im glad I went with spray. Your videos convinced me of that. The guy has been in the business since 1977 and knows what he’s doing. He said it should pay itself off in 5 years. I would have hired you if you were in the US. Time to expand.

One of the best info channels I have seen on YT. Thank you!

I am a Contractor by trade, I must said, GREAT JOB!

So it seems u never had issues with 1.5” ... idk I’m always a bit worried and spray 2” min since I’m scared it would not be enough thermal break but ur 10 times longer in business! I enjoy the videos lots of good information!! And of course I like to watch u Guys spraying that butters cheers

Well it's me again ... your vids are popping up a lot! Superb job on educational video here ... Impressed with the sound levels too and the voice over. Awwesome hope you have a great weekend.

We were thinking about doing the foam from the outside because we have some finished rooms. This video builds up the confidence level. Thanks!

In my garage I had 2 inch closed cell sprayed in 2x4 wall and 4 in under roof. I'm in Denver . I have a 30 Amp electric heater and set on low it keeps garage above 50 degrees for less than20 dollars a month and that's with shop tools and lights. Love the foam , it's worth the $4,000 for insulation in 24x32 garage. Spend the extra money.

Do you recommend venting above a vaulted/cathedral ceiling where the under belly of the roof has been spray foamed? This is for a new 4 season cottage in Canada so we are going to be dealing with very hot and very cold temps throughout the year. Thanks

If you do a very old house that would be a neat video as well. Super professional Bob Villa level!

My house was built in the early 50's and has plenty of cold spots. I looked into doing spray foam but found it too costly for my budget. Opening up the walls is the right way to go but I'm afraid to find the unexpected.

So my question for inside roof applications is how are roof repairs dealt with? Many people discover that it's time to repair their roofs when they start leaking. It would appear that with a closed cell application that roof damage would almost never be discovered or seen until the roof had visibly degraded to the point that it needs replacing.. At that time a waterproof under barrier could conceal potentially years of damage to the plywood roof sheathing.. And since the system bonds itself to the plywood and trusses/rafters it would make replacing or repairing that damage problematic. Just curious if that is an issue and how is it dealt with as that is one of the concerns we have before moving forward with a retrofit/spray application in our own attic..

The joist ends do not get insulated or protected from moisture when you close cell them. Closed cell on the outside could solve, but blow grade to protect the foam.

what is the dimple mat on the concrete?

Big fan of spray foam something you didn't mention.. I saw a concrete co. spray foam 2" directly on ground, then poured over. Something I'm not sure is directly on bottom of Roof sheathing. If you have a leak will not know and alot of damage can happen. Thoughts?

My understanding is that you shouldnt insulate the inside of a concrete foundation, because if theres a water management failure, like failed gutter, or improper soil grading, and pooling water near the foundation that'll freeze in the winter, it'll cause frost heave on the foundation. Maybe its different in the south, but here (PA) insulation is usually applied to the exterior of the foundation.

Have to remodel a bathroom and took some sheet rock off the wall. To my surprise I have a few spaces that had no insulation in exterior wall. It was stucco, wire, and seem like vapor barrier, studs than sheet rock. Empty wall spaces seems like very poor construction. Home was built in 1992 in Las Vegas would spray foam be a better choice in this hot climate?

Mike thanks for all the great information. Where can I find Documents or literature stating or certifying that 2 inch close cell performs better than an R 38 traditional material. I am trying to convince a inspector the how air seal is more important than just the r value.

I guess my only hangs up are that I'm not sure whether to use open or closed cell... Spraying insulation on the inside of a basement that doesn't have insulation on the outside (where soil frost level is 26" deep) I'm worried about holding/cutting off the vapor and having the basement walls crack, and encapsulating the underside roof decking may cause roof rot on the decking... IDK... I almost need a time machine so I can see 20 years into the future to see how this stuff holds up.

Most of the pictures with 2x4 showed 2-inch spray foam? Is there a limit meaning can you fill the entire space (3.5-inch spray foam) or are there other issues?

I have always talked my customers into closed cell foam any opportunity I can get. It is a great solution for everything you mentioned in this video. My question would be do you recommend a foil vapor barrier between the roof sheathing and the insulation? Thanks for the video.

I have a 10 x 20 wooden shed with the spray on vapor barrier of the silver stuff and I’ve already insulated the walls with fiberglass because I couldn’t get Rockwall and put the plastic six mill vapor barrier over it and taped it with a special red tape. I put rafter baffles up to the ridge vent but left the ridge vent exposed on the inside. Now I’m considering spray foam to rip the baffles off the ceiling or leave them I’m so confused. I also will be living in it full-time in the south but there’s lots of humidity. It’s a barn loft so I want everything to be expose so I can use the loft for my altar and a spare bed

Can the floor crawlspace be sprayed too?

I plan on doing a metal roof with zip OSB sheathing. And close cell spray foam insulation underneath on the inside. Do you recommend having a ventilated roof and ceiling off the attic completely with the spray foam?

whats the density on that foam he is spraying?

Mr. Jones the part you're not understanding is the tighter you get at home the more air leakage you get through the fewer holes when your house is under negative pressure is all about positive and negative pressure in your home which is a heating and ventilation issue not an insulation issue

What is the reason for the dimple mat on the walls of one of those basements being sprayed?

You mention the roof decking with no air flow...in my area you need an R49 ceiling. I’m going for an R60. With 2x4 truss top cords if you do 3.5” of closed cell are you passing code at only R24.5? I thought you mentioned closed cell vs other types aren’t 1:1 so a ceiling my not need a R49 to pass. But now you are heating and cooling that attic. Mines over 12,000 cubic feet. Seems like a lot of area to heat and cool.

Rafter rot in our 100 year old home’s attic…..seems to be a humidity control problem during the cold canadian months eventhough our attic has 6-8 inches of spray foam the roof….if had to do over, would not spray foam

Would it be a waste of money to spray foam with closed cell in a vented attic?

Hey Spray, I love your videos. Rim joists -- is it ok to spray foam into a rim joist bay that has a metal rim joist hanger, like for a dropped down design? Will the spray foam adhere to the metal or degrade it over time? Thanks

Can I use 2" rigid foam in the walls and seal the perimeter of each sheet with blown in foam?

Hey just recently found your channel and love the videos. I have watched several of them so far but as another KZfaqr I have to ask what microphone you use? On my stereo I’m hearing a lot of plosives which is often indicative of the microphone being too close to your mouth, or needing a plosives screen, or even the wrong microphone which I did for years. I switched to a cardiod lav microphone and it greatly improved the sound. Also, which is better for sound dampening,, open cell or closed cell? my KZfaq channel is doing well and I plan on building a 4000 square-foot shop/office and then a custom home in the next couple of years and I love spray foam. Thanks for the info

UP next in "Blow in Insulation Steve's" video. They discuss 7 places that need insulation in your home. These 6 and one more not mentioned............... so your house does not become a torch in case of a fire.

Hi there, Looks like you do great great work and all it top quality stuff! Question? I’m dealing with a 100 year old house, live in Massachusetts. outside walls are 2x4 and I’m in the process of renovating the whole first floor, took out the blow in insulation and I want to go with foam of course. Should I use closed or open cell in the outside walls ? Also what should I use in the ceiling insulation. The whole floor is gutted out, floors walls ceiling. Thx in advance

Great points as always. Appreciate the content. BEST. Can you clarify the below. 1. Do you recommend rafter vents baffle for air circulation beneath the roof seathing and insulate under the baffle? If not how will there be moisture or condensation beneath the roof seathing. 2. If the basement contains cinder blocks, applying foam insulation, will it not make the cinder blocks moist due to water from outside? For concrete foundations, I see very bad waterproofing on the outside. How will this affect if we do foam insulation from inside to the basement walls.

Do you reccomend any company in the salt lake city area? I have an old barn im trying to turn into a sculpture studio. Needs to be warm for models without huge energy output. Worried about the condensation thing but the average humidity hear is really low.

Love your channel trying to learn more about spray foam I’m looking to insulate a 2 x 4 renovation full house , But when I speak to contractors what I’m being told is a house needs to breathe that spray foam closes it up what are my options and is that true

Do you have another video that goes into more detail about the cross-ventilated option for insulating between joists in a ceiling?

Great videos, I like the idea of spray foam at roof. Does the space above the ceiling need to be conditioned?

In the crawlspace, instead of spraying the underside framing of the upper the floor, I’m looking to spray the concrete block walls, and the slab to reduce humidity and coldness. It would then be somewhat of a heated space because the crawlspace is partially raised and it’s ceiling is on par with the height of my basement ceiling which shares a drop ceiling that allows warmed air into the crawlspace. Anything wrong with that idea ?

Thank you

I wish you worked in Southern Idaho... ? Greg

Here in Virginia we have to leave a termite Gap near the seal plate. In that instance spraying in the joints bays wether basement or crawl space might not be possible. Have you come across this?

What about injection cell for concrete block construction. With the inside walls that have 1/2in PT straps for the drywall.

Is spraying the gable walls mandatory?

If I am wanting to add spray foam to the rafters but I already have ventilation in the attic due to the insulation originally being batting on the floor, is that a problem?

How to apply thank you

Very nice. Thanks

Block cmu wall foam injection? Had a guy try to sell that to me instead of lining the inside with the reflective foam board. It wont be a balanced insulation because the foam wont always reach everywhere and there are solid columns of concrete in the cmu. He claimed it was a higher r-value than the foam board.

What is your opinion on closed cell sprayed to the underside of the attic for old home built in 1909?

Where are you located?

re valued ceilings -ou code requires them to be drywalled or ahem other fire resistant coding ! that a not insignicianf expense

Can you completely cover hvac ducts with the foam. Without covering the ducts with anything

I hope you read old video comments, I was considering adding foam to the basement. Would it help to prepare the issues? I have plaster and paint over cinder block all and the joists have been there for 120 years and are dingy looking. I have an older masonry brick house. Do you all recommend spraying those? The walls in my home are very cold in the winter. I assume from what i can see that it was filler with some kind of fluff but its all sank over time. I've seen mixed things on if its possible with masonry homes.

When spraying an attic to make it a conditioned space, are you required to cover the foam with a fire rated product like a fire paint or something else?

If I want sound dampening, do you just spray the sound dampening foam over the regular closed cell foam?

Thanks for the information. With 2x4 walls.. if u use 2 " of foam do u need to fill the 1.5" air cavity before the sheet rock is installed? I'm in central California valley.

Hello Can I spray closed foam on the roof between rafters. What about ventilation.?

Is that closed cell in the attic? Also, is it ok to apply 2” to the top side of the crawl space and rim joist (totally isolating that space from the house above) as opposed to the walls/rim joist?

Can I put fiberglass bats over the spray foam to help with insulation in my ceiling? I can't afford to completely fill the 2x6 rafters and the fiberglass is already purchased

Is it a good idea too use spray foam on the outside of a basement ?

Nice video! Hopefully you can give me some wise advice! I just had open cell installed in the floor joists of my modular home. The crawl space is still exposed to outdoor elements because it only has plastic vented "underpinning" or "skirting". It does have 6 mil plastic on the ground but it's not in the best shape. Under the plastic is dirt and the bottom of the insulation averages between 2.5 and 3 feet from the ground. What would be the next steps to create an efficient insulation system? Should I install a tyvek type material against the foam and joists to prevent moisture from rising into the open cell? Should I attempt to encapsulate the crawlspace and try to make it air tight? Should I be more concerned with installing new plastic on the ground? Thanks in advance!

If you seal (spray foam) the porous concrete basement or crawlspace foundation walls, won't that just stop water infiltration only right up that point? So essentially water will seep from the exterior thru the concrete and have no where to go, stopping at that spray foam barrier. Couldn't that actually cause water entrapment in the foundation wall & therefore cause serious erosion/ cracking issues?

Hi Spray Jones, Quick question; I have an older farmhouse recently gutted and renovated. I went with batt insulation when I put her back together. My house is framed out if old growth barn wood. My Contractor said that we could not use spray foam because wood needs to breathe and that it could begin to rot if we used spray foam. How do you spray older homes like mine? Thanks !

Doesn’t spray foam cause health problems for the residents?

Great videos!! I’ve recently decided that I want to get into the spray foam business her in Texas. I have been doing my research and scheduled some training with BASF but you as a professional with 15+ years in the industry, would you have any advice for a beginner, how to start, what certificates to carry, any advice really. This is an open question for anyone who is in the Spray Foam Industry. Thank you all in advance.

Do I need to spray foam on the out side of the gable wall and between my neighbor joint wall?Do I need no left the gable wall for the foam to breathe,Or to seal the gable wall to max the performance of the insulation?

Great videos...

Will there be condensation with a tin roof?

What’s the name of the product that you’re using, do you know if it’s legal for California ?

Aren't you supposed to sprayfoam the outside of the walls in a basement as opposed to on the inside?

I agree wholeheartedly putting fiberglass down in the crawl space makes no sense

Ok 👍 but you didn’t explain that the stinky odor and mole problem

Hello there, your business only serves the Canadian providence, I'm in the lower 48 I would not have a second guess in contracting your company for the project.

Why dont people spray there ducting, wouldn't it help with heat/AC loss?

DOES THE SPRAY FOAM IN THE UNDERSIDE OF THE ROOF ADD ANY STRUCTURAL INTEGRITY? I'M LOOKING AT SHED TO HOME PROJECT AND THE SHED DOESN'T USE RAFTERS. THANKS FOR THE HELP

If your have asphalt shingles it can break havoc on them, I've seen it first hand.

Spraying the basement walls will prevent bowing walls to stop?

I understand that foaming under a roof deck with shingles will cause them to fail in a relatively short time frame. Several videos on here dealing with this problem and virtually all manufacturers will not guarantee their shingles when installed on such roofs. What's the deal?

Why not 3.5" in walls ?

Could someone tell me what is the cost of this product .

You should be sealing penetrations before spray foaming. You shouldn’t be relying on spray foam to seal penetrations. Seal the penetrations correctly first then use spray foam for insulation.

I live in Atlanta. I've been thinking of 2 spray foam projects. Which should I do first? Spray foam crawl space foundation wall, with foam board rim joist (for termite inspection). Or should I spray foam my roof? Which would yield the biggest energy benefit? I've heard that spray adds strength to a structure. Our home was built in 1921 and does not have a subfloor. Joist are spaced 20" - 30" apart. Our hardwood cherry floor is all 8' lengths. Would spray foam from underneath stiffen the floor. Or would it expand and come through the cracks into the living space? Thanks

So pretty much everywhere. The title of this should be "spray foam your entire house".

Except behind those studs that should have had a space behind them.

Where’s the roof leaking? Hmmm no idea

You don't need roof ventilation here in Michigan if you have metal or clay roof. Asphalt shingles DO NEED VENTILATION. You do need ventilation in your spray foamed house then where does the moisture go??????????????? That's why code requires ventilation. What he says is misleading. Take a shower where's the moisture go? Boil some water where's the moisture go? You may not need roof ventilation but then you need mechanical ventilation by code. If your vent fans can't pull fresh air how does it vent? Spray foam is great but it can be miss used. Spay foam against something that condenses will never dry out. Just trying to set things straight. I don't want to have to rip out another spray foamed basement. Hows a basement suppose to dry behind spray foam? It don't. What happens in basement is masonry condenses right at spray foam. It's sealed from coming in. But it's sealed from leaving too. 22000$ to rip out spray foamed basement and try to stop the mold and mildew. You don't need ventilation just never shower or breath in your house so moisture won't be a problem venting it out.

👍👍

I hate difficult penetrations !

Mice and some bugs will eat right through foam

A lot of closed cell... what’s the yield per set?

When you minimize the holes in your home you maximize the amount of air through the remaining holes you're the remaining holes under negative pressure duh

"That I need"? Probably not & Only if your doing it for free! I can't imagine what this costs...

"You wanna have iPad Android technology in the walls" - Pardon? Does that pitch actually work on anyone?

If you could possibly eliminate every hole on a house you are in one dangerous a** house that is a mechanical home relying totally on your ventilation system no system nothing to do with insulation except except negative A house with no leakage is A Dangerou's home fires burn differently in these homes

By the way the house had 3 floors, 2 full floors and a nice full attic

Spray foam voids warranty on shingles