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Thank you

Hi what spray foam to use

Just had two contractors come in last week and tried to do it incorrectly. Found out about air sealing purely by accident. Thanks for posting this!

This guy is go Icing out gold today. Thank you for helping others

What kind of insulation is that white stuff? I'm about to throw some cellulose into my attic, which currently has that white insulation.

can it be used on concrete roof ?

My house was built in 2022 in central Texas and the insulation doesn't look like either you've shown. It looks pure white like cotton and it is very light and fluffy. Any idea what it is?

I'm trying to get my City of Encinitas CA to educate homeowners who are remodeling about comfort and the opportunities they should not miss. I will link this video. Such a shame to miss the opportunity to get a more comfortable house when remodeling--for pennies on the dollar--since hard to access areas like tight attics and cathedral ceilings become accessible. So thank you!!!

Music to my quality-building ears. Thank you!!!

Best thing would be to remove it and put new drywall over it.

Living in central Texas without a central AC right now is a battle I intend to survive, lol. I've watched about 30-50 videos on attic insulation, and am realizing it's a whole branch of science in itself. And you still managed to fill some gaps in what I've learned. Thanks for the generous information. 🙏👍

I have interior walks that need insulation, especially for sound proofing. Can this be done with this injecting product. How much does it cost? Can you make a recommendation?

12 years ago, and we still haven't adopted these simple practices yet. How ridiculous, especially considering the amount of energy that is lost.

Is it useful to staple radiant barrier to inside ceiling of upstairs hallway? Or will this do the opposite and hold heat?

I just replace bathroom tiny halogen lights with pins to LED. Not cheap but So Much brighter ✨️ and am about to do indoor flood lights with new led energy save. Hope they last longer.

It would have been much better had you performed the air leakage measurement of the house before you extracted the blown insulation. This would have provided a much better comparison to what you did and why you say what was there was incorrect.

I know this might sound impractical and out there in left field but couldn't you just put vents in the doors or louvered register vents as an alternative knowing this would prevent rooms from breathing individually but would still let the system flow and function easier without big pressure fluctuations

i wish you still made videos, you seemed very good at what you do

What foam brand are you using?

I have watched and enjoyed many of your videos - just a building science keener myself. But you made a rookie mistake when you attempted to show that you can measure stack effect from totally inside the building. You weren't measuring the pressure differences at the ends of the tubes - that's not how it works. The air inside the tubing is changing in density the same as the air outside of the tubing so the net result is that you could remove both tubes from your manometer and get the same reading - except you had the one tube under the basement door. You were measuring the pressure in the basement across the door. You had closed the door I noticed. If you would have turned the HVAC off your gauge would have went to zero. Probably the HVAC had more returns than supply in the basement and that is what you were measuring. Still love your videos - lets all keep learning together.

The music behind your talking is quite annoying. I can’t listen anymore!

The video is labeled installing jumper ducts but no one watched him "Install" jumper ducts. The only thing they saw was a register vent cut into the ceiling. For the ones that don't know, He simply cut roughly a 10x10 register inside the bedroom and a 10x10 register in the hallway and conected the two with duct work to allow the Main return in the house to pull air out of those rooms while the doors were closed. The same thing can be achieved by cutting about 1 1/2 inches off the bottom of the door, Cutting a fancy register in the bottom of the door or above the door. To test this, turn on your Airhandler and crack your bedroom door, hold your hand up to the crack and feel the pressure of the air being drawn. The above methods does the same with the door closed. I hope my comment helped someone understand this poorely made video that left some people scratching their head.

+ Earthquake Danger

I cannot tell you how helpful your videos have been. This video is about energy efficiency but I’ve been desperate to find a solution to a dusty home causing me and my family health problems. The master bed and bath have it the worst and I couldn’t figure out for the longest time WHY. I spent thousands with different contractors and no resolve. Now I have a plan, that thermal gun is a great idea to see if there’s leakage from the attic going into the master bed and bath. It sits right above the room. thank you so much!

Great information. If you search life span cellulose has the shortest lifespan of all insulations. People also describe it become dust overtime. I try to reblow fiberglass rather than throwing it away if it doesn't have rat poo or other contaminants.

Thank you for putting out this video. This is the 3rd year in a row I am working on a project like this and am still surprised by what I find when you extract the insulation (disconnected bathroom fans, hvac vents disconnected, large penetrations, wasp nests, rodent poo, ect). So important for ice dam prevention. You are next level, i talk with friends of mine who work for insulation companies and they tell me it's industry standard to not do the work right as they make more money on reinstalls.

Amazing the difference between back then and today. Today here in Eastern WA this wouldn't even work because it can get down to the single digits and we're lucky enough to have a governor that's banning gas. Heat pumps are being pushed on people BUT in the middle of winter they don't have heat.

my baby you out done yourself this video was exceptional for my studying thank you take care

I would be reusing the insulation after screening out most of the debris.

I have that old insulation that might have asbestos in it, and its very expensive to remove. How would i insulate on top of that???

Hey guys, schoolboy question from me. Doesn’t something like this raise concern? Say you have below you have a timber floor, and between the sub floor and downstairs ceiling plasterboard, between the cavity you already have rock wool insulation, and now you are sealing the gaps around the joist-to-plasterboard… Shouldn’t you leave some gaps for airflow?

It also very clearly shows much less Fiberglass insulation over top of thermometer less dense than cellulose (light penetration). You forgot to mention that fiberglass Far outlasts cellulose like 100 years vs 50. It is very impressive however how well cellulose insulates and is fire retardant, cool! Cellulose also fluffs back better than fiberglass if compressed. Probably most important is the cost of cellulose is only about 30% cost of fiberglass, so boom you win!

understand its grandfathered but code say no return in kitchen or bathrooms move air handler relocate returns

So roof don't need air vent?

This great stuff is extremely fire resistant too.( worth researching)

i was gonna say,

What did a job like this cost ?

Ok so what did you seal?

Cincinnati, Ohio summer roof design... What effects would adding 4 inches of insulation on top of the original deck and then add foil faced panels and then 2x4 furring strips and then the finished roofing? The furring strips provides the heat evacuation above the foil faced panels.

Why is rockwool not popular in USA? it does not melt easily as glasswool. And it can be made more rigid.

I counted 108 time you said rim joist….. my wife wouldn’t stop laughing your entire video… thank you sir.. lol

I have this issue, Can I use a dehumidifier in the attic to remove the moisture?

8 yrs later what happened

I have a high humidity problem the corners on my ceiling are sweating any idea what may cause this . Ranch house in illinois thanks

Yeah but show us the results

Larry. Stop demonstrating while on the edge of the roof man. It's not worth the fall

I just found out where these terrible biting mites are coming from omg ....I've been getting bit for a long time....I know this is it

even if u don't air seal, insulation is still better then nothing

Gotta update this video for 2024 :). Good stuff.

What would a service like this cost in 2024? Is there an approximate price per square foot of attic space?