Attic Air Seal and Insulation | Walk-through
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- Take a look at this attic air seal and insulation walk through performed by Crawl Space Ninja. You will see what it takes to properly air seal an attic, also you will hear what was living in that attic! Need an estimate? Click here: crawlspaceninj...
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#CrawlSpaceNinja
Which do you prefer cellulose or fiberglass?
i had blown in but had a roof leak, now all of that is gone and i am going back with close cell foam
@@tonyhanners1031 If you put foam in your attic, you will never get a termite warranty again.
Fiberglass is better cellulose can contain VOCs
@@phideauxe5108 why?
@@bokononisti2820 the inspector can’t view the wood if it is covered. Same issue can happen when doing encapsulation under a home.
You dudes are so calm and relaxed in the attic. I am always sweating to death and waiting for a mouse to run up my leg! Hasn't happened yet but I have seen the little mouse droppings!
Movie magic! hahah
Better s mouse run up your leg than a “Brown Recluse”!!!!!
Could be gecko poop and not mouse poop. Looks the same.
I love Crawl Space Ninja and do know how competent he is. A big mistake that the contractor was about to make was to run a dryer exhaust through soffit. That's a NO, NO since back draft thru soffit causes mold buildup inside the flexible exhaust surfaces.
Don’t know how I haven’t found you sooner. Great video! I do bpi assessments and this is what I always recommend homeowners do,
Brown recluse LOVE boxes.
They love silverfish too. Their preferred food.
Awesome ….. I need this level of competent service at my house
I've yet to come across a guy that looks like Jesus Christ that I don't like, keep up the good work 👏
👐
Thank you Michael!
My pleasure! Thanks for watching and have a blessed day
Best of Trade! good presentation.
Great video! I am getting attic insulation done by Pure Eco Inc in LA soon
Let us know how it goes!
Fiberglass. The worst insulation in existence. Decent air filters. Terrible insulation. The pink people have had unlimited advertising budgets for many years to brainwash consumers into utilizing that carcinogenic nightmare. Love watching your videos. Former cellulose installation installer here. Michael, building science tells us to never terminate moisture filled exhaust into a soffit as it is sucked back into the attic and adding moisture back into the attic creating mold and mildew. Cut a hole into the roof to terminate. Moisture filled exhaust to harmlessly evaporate into the atmosphere through a proper roof vent. Unsolicited advice here. 😀
Thanks for the comment.
You're not supposed to vent the bath fan to a vented soffit. The hot moist air gets sucked right back into the attic through the soffit vent. Vent through the roof.
Thank you for your insight.
@@CrawlSpaceNinja Thank you for the great crawlspace videos, very informative!
I was also advised to vent to the roof and not soffit and use insulated duct from fan to roof to prevent warm air and cold air meeting which can create mold? I'm researching so if I'm wrong please let me know
@@kevinhill5531 You’re exactly right. Vent bathroom exhaust fans either through the roof or through an outside wall with no perforated soffit above it, preferably on the back side of the house so the vents aren’t visible eyesores.
@@kevinhill5531 the insulation helps try to protect the outside surface area of the vent pipe from getting colder than the dew point in the attic which will cause condensation and drippage down onto your ceiling
Cellulose insulation is what we have in our present home and plastic baffles, don't know if the coffered areas are finished off correctly, will have to check it out.
Thanks for the comment!
Why isn’t air sealing a code standard and inspected before insulation is blown in?
Dad Austin - Although air barrier inspections and blower door tests are still mandatory, there is some flexibility for climate zones three through eight. Let's say you choose the prescriptive compliance option. In that case, you must meet the three ACH 50, but if you follow one of the performance paths, sections four, five or 406, you can meet the overall energy performance targets with flexibility up to five ACH 50. Since both paths are challenging in their own ways, I don't know how often they will be used. For climate zones one and two, there are already five ACH 50, so there is no additional flexibility. Thanks for watching and we hope you have a happy and blessed day!
Why not do a blower door test before and after all of that sealing work?
You could definitely do that!
You can. But overall most homes people buy do not have any air sealing in the attic. In my experience doing plenty of blower door tests on 1400ish sqfoot tract homes they almost all come out over 2000cfm -50Pa and with the use of pressure pan taking pressure readings at outlets I pull around 25-30PA meaning the attic space is more connected to the building envelope.
You guys rock. Wish you were in Ohio.
How do u know if a company is not ripping u off especially when they are sealing . My attic is not as high looks like it would be very difficult to get them plus my ducts block a lot of acces or atleast make it hard
Customer reviews are the best way to get an idea if a company is being honest with you or not. Also, getting more than one estimate/evaluation will further protect you. We hope this helps.
@@CrawlSpaceNinja yea I ended up getting 3 estimates . The one I picked were able to answer all my questions from research I did plus worked directly with my local utilities company with rebates . I had a complete seal removal of old insulation and r38 installed. It was around 6k with a 3 k rebate
@@lizardman1303 how did it affect your bill?
Insulation i prefer in my attic, would be the most efficient along with cost.
Thanks for the comment!
I just bought a house and the attic is already floored in. I’m guessing the attic was never air sealed. Is there a way I can air seal without removing and then reinstalling all the individual-plywood sheets, or am I out of luck and have to remove the floor then reinstall it? I live in the Philadelphia, PA area. Thank you.
What is the reason to foam each ceiling rafter ? Possible leaks from the dry wall screws ?
During the summer, when attics receive a lot of sunlight, insulation helps keep them cooler. For proper airflow, keep all vents open. Rafter insulation in an attic could reduce the temperature in an attic by 20 degrees or more, thereby lowering air conditioning costs and reducing heat transfer.
I don't think he understood your question. I'm wondering too
Looking at the Styrofoam baffles I don't see if they are for 16 or 24" center...or are all rafters on a 16 inch center?
In Maryland - cellulose!
What would it cost to remove old insulation, do pest control spray and install sealant and do r38 insulation on 3K sq. ft. area?
Sorry, we don't share prices on the channel, but I'm sure a local contractor could come out and give you a price.
Do you recommend 5 1/2 inches of open cell foam sprayed between all roof rafters ? A company is telling me I need that done. If so, do I still need to air seal the the floor of the ceiling on sheetrock and ceiling joists ?
Dont
Do you really need baffles if you put enough roof venting in like solar vents
I would verify with local codes what they would require in that situation.
Hey do you guys install whole house fans like quiet cool and what do u think about them. Thank you
We do not install whole house fans between living space and attic. Many homeowners we talk to love them in summer and hate in winter due too much of the heat transferring into the attic. Thanks for watching.
How often have you had a worker who drops things and busts holes in ceilings when doing insulation or taking old out and installing new?
LOL, I can remember one time. Thankfully it was over their garage and not in the living space and the homeowners were super nice and we fixed the drywall and they still wrote us a 5-star review. Has this happened to you?
@@CrawlSpaceNinja yes they just busted 1 hole in my beautiful drywall knock down ceiling and busted 3 light fixtures which now don’t hang right. I’m furious.
Is it safe to seal around high hats in the attic that aren't meant to have insulation up against it? Can you use sheetrock to seal around them? Ty
Should be careful if non IC rated. We made sure these lights were ok to seal.
I was told by someone I should have a vapor barrier under my insulation. Do I need a vapor barrier if I air seal as you’re demonstrating? I live in Southern Wisconsin
We don't put any vapor barrier in attics under insulation.
@@CrawlSpaceNinja thanks for the response!
I’d like to know the cost to take out the insulation and air seal per sf on a floor attic if you could please? I think I have a guy trying to take big advantage of us.
It all depends on the square footage of your crawl space. California has high prices.
We are not doing this type of work to provide an accurate number but it can greatly vary based on your location. I'd recommend getting several quotes.
@@CrawlSpaceNinja I found out. The usual. Typical rip offs and a few good ones.
Michael, how many baffles are needed in the attic?
It deppends on the size of the attic, we will put out a video answering this question!
I like a baffle covering all soffits to make sure insulation won't fall in and lose R value.
Crawl Space Ninja Excellent thank you!
I forgot to say that they are wanting to foam all my soffit vents and gable vents making a sealed attic. What do you recommend ?
You need to vent your attic
Could you use a roll of house wrap or plastic as baffles, I’m thinking roll it out, face staple to the studs then drape some down to the top plate and staple? Thinking of the most cost effective route?
House wrap is not an air barrier material and will give you virtually zero benefit if installed.
Get the cheap Styrofoam from home depot the ones you order online
Any negatives on plastic baffles?
If there are any moisture concerns by using plastic baffles, we would suggest a vapor-permeable material.
Any one know why they air seal the attic??
Stops air transfer between living space and attic. Slows the stack effect.
I prefer cellulose insulation. It’s much easier to work with than fiberglass.
Thanks for your input! We like cellulose a lot too.
I’m in the middle of doing this, brutal. Am going to with rock wool for insulation.
Good luck!
Me too ):
Was it worth it in terms of savings?
Eek...spiders being brought in!
2 yrs later more of them
Isn't it excessive to air seal at every drywall butt joint and spot where drywall meets 2x4 wall in the attic? If the ceiling is finished well and painted, crown moulding installed with caulk, couldn't you skip this step and just focus on electrical and plumbing pieces installed?
Thanks
I'm wondering the same. However drywall mud at the seams is not a sealer it's still porous
Excellent question. For more insight on this please submit a Ask a Ninja form so an expert will get to you soon! - crawlspaceninja.com/ask-a-ninja/
Do you have a office in Texas
Deadria, we currently do not have an office in Texas, but we are expanding all of the time. You can find all of our service areas on our website: crawlspaceninja.com/service-area/ Thanks for watching and have a happy and blessed day.
Fiberglass
Thanks for the comment, stay tunned!
cellulous, with foam in the cracks
Thanks for the comment!
Fiberglass batts with cellulose blown in over it.
Thanks for the comment, stay tuned for the winners!
I want to air seal myself . Do I need to get covers for everything that’s had a hole through the ceiling . Aka fans fire alarms . Or is more like lights bathroom fan ?
Our DIY Specialist can assist you! Contact them here - diy.crawlspaceninja.com/contact-us/
Such a helpful video! Thanks for sharing.