Basement Insulation - Best Practice To Prevent Mold
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- čas přidán 11. 01. 2020
- How To Insulate A Basement - Best Practices.
FULL ARTICLE: www.aconcordcarpenter.com/bas...
Using Closed Cell Spray Foam Insulation - Basement Insulation Best Practice Closed-cell spray foam is as the name suggests a polyurethane foam that is sprayed on by a nozzle. A mixture comprising of isocyanate and polyol resin mix at the tip of the applicator.
Basement Insulation - Make the Basement Air Tight - Using Closed Cell Spray Foam:
The simplest way to prevent this water vapor from entering the space is to prevent air movement [moisture] into the basement by installing a vapor barrier. When properly installed, Basement Insulation Closed-cell spray foam (spray or board) acts as a vapor barrier and insulates. Closed-cell insulation is considered best practice for basement insulation.
Once you have insulated and sealed off the masonry you can install the partition walls. If using Basement Insulation Closed-cell spray foam to seal and insulate you can install your partition walls ahead of time. Ensure that you space the wall away from the masonry 1-2 inches for the Basement Insulation Closed Cell Spray Foam Insulation to create a capillary gap between the masonry and wood wall or metal studs. - Jak na to + styl
Will look at your articles when I get the chance to. There has been somewhat of a step back from foam here in the Midwest (at least what I have seen) due to the costs associated with when something goes wrong somewhere else in the envelope and foam can exacerbate the problem. Foam had been billed as the cure all and it itself has created new issues. As a remodeling contractor, I encourage everyone to do their due diligence of homework when considering spray foam. There is a lot of misguided information out there, even from "the professionals". Keep up the good work guys.
I agree - do your due diligence. And know the difference between open and closed - and where to use them
Thanks for the knowledge , Rob !!!!!!!!!!!!
Rob
That is a hard one to deliver in one go. You gave it plenty of energy and covered the points well. I will be reading your articles on the subject particularly rims joists. I have seen plenty of rot in those and it is expensive to remedy.
In Britain it's always trapped moisture problems circulate with power
Is this Roger or Robin or someone else haha
@@MsElijah16 It is Roger
Skill Builder Hey Roger , love your channel
sure is brother - we're doing a few videos on a few different aspects. Probably take us a couple of months to get them all out
Great vid. I use foam board for the basement interior walls. If new basement then exterior foundation. Once you go interior sprayform, you are fucked for life if you EVER have repair due to foundation issues or anything behind the wall. Kickass. Woohoo
What about preventing moisture coming up from the floor? Also if you use Polystyrene foam 2" should you paint or seal the block before installing? thanks for the videos
Spray foamed my attic. Saved 30-40% on heat and AC costs. My wife was skeptical but she loves it now!
Ty
Nice summary, it's an interesting product, it covers a lot of bases but accidentally covering things could be a pain... looks like the best insulation though
yes - retro stuff can be a pain - that's why its important to preplan locations of utilities into cold rooms
Hey, Rob! What are your thoughts about digging up around the foundation, and gluing insulation plates to the foundation? How deep should you go? Will it potentially reduce the amount of humidity in the basement? What do you thin about this combination with closed cell spray foam?
I don't think its worth the expense.
If you get cheap labor or DIY for the digging you can get used/surplus polyiso sheets and bring your cost down substantially. My neighbor did this and I'm doing it now.
I can imagine if water or gas leak or electrical failure inside foam a painful work removing and looking for problems honestly I don't like spraying foam in wall where many piping passing through
Does closed cell spray foam off gas after 24 hours?
Best practiced. Masonry loves to wick moisture. Your masonry needs to breath somewhere. Do not completely seal your masonry. If your masonry can not breath it will condense and leak. There is a reason masonry sealant stops above grade. Spray foaming a basement deprives your masonry of heat. It moves the condensation area inside the masonry. If you do not have an area for masonry to dry where does the moisture go? You need ventilation in the attic. Be it passive or mechanical. You take a shower or boil water where does the moisture go? Try using a fireplace, stove vent, bathroom vent, and you find you need ventilation. They make heat exchangers for those problems. Some shingle companies will not warranty if no roof ventilation. Spray foam is a great product. Some care and thought should be taken with spray foam when using on masonry, roofs, and chimneys, because of condensation and moisture. Thinking of spray foaming the inside of my brick crawl space.
What about a hybrid approach using rigid for the clean wall area then spray in the hard to reach & for sealing? Would that be any less effective vs pure spray foam?
What are your thoughts on a combination of closed cell and let’s say rockwool insulation? Spraying 1-2 inches of closed cell and then adding rockwool to stud bays? Would the cost go down on the closed cell install because they aren’t using as much material?
Flash and Batt is a solution - if done right. You'll want to do 2-inches to ensure you get that vapor barrier right
I dont either - building a cold room is the way to go - we may do an article on it soon
Cost benefit is foam board sealed/picture framed with spray foam.
Rob,
Do you spray crawlspace foundation walls that are sub grade? I've had a contractor recommend this, yet watched elsewhere that the cinderblock will not be able to breathe and become waterlogged and degrade at a rapid rate. What are your thoughts? I am planning to insulate the walls with spray foam or board.
yes we do, and we've sprayed cinderblock too
@@ConcordCarpenter Do you have a video on your thoughts re this? I was told that because I get moisture through my foundation, spraying it would trap the moisture rather than letting it seep through and eventually evaporate. I know this would drastically reduce the moisture I'm getting, but I don't want to damage the foundation!
I have cast iron around a good portion of my basement. I'm assuming the contractor will frame right in front that which will be about 9 inches from the cinder block wall. Can i still use 2 inches of spray foam? There will be a air gap between the foam and studs for that area
william duque yes
@@ConcordCarpenter i also have a interior french drain system in place. Hopefully they know not to spray over it.
william duque show and tell them
Hey Rob. Is it rodent proof?
✓FAIR Explanation of heat loss & mold issues, I am struggling to understand the nature of all the elements involved. Is there a INSULATING BASEMENTS FOR DUMMIES?
or INSULATING BASEMENTS CHEAP BUT PROPER FOR DUMMIES?
I'm looking for information on the cost. I realize it can very from region to region.... ball park range...
•What is the price range per inch thickness?
•What is the minimum thickness I need to achieve vapor barrier?
•Can I get the minimum thickness AND THEN, install fiberglass over that to increase the R-VALUE?
Thank you,
Mike N Ang on FB.
Doesn't it look messy and ugly if we are leaving the basement as it is after spray foam?
Code required a flame retardant paint or a wall covering
@@ConcordCarpenter Could you please elaborate a little.. I have a basement exposed without any frames or anything.
@@shakirahmedtth spray foam is flammable. You need to frame over it and apply sheetrock to give it flame resistance.
I feel like the most realistic option for most homeowners is a combination of traditional insulation practices along with closed cell foam from a premixed can ala DAP expanding foam. Do you guys have any articles or videos on the this method?
coming soon
Downplays the risk of improperly applied spray foam polyurethane.
No downplaying - we could do an entire video on that - good idea
I don’t like the idea of all the electrical and plumbing covered .
A insulation crew spayed that insulation everywhere in a day and left leaving me a huge mess to cut flush to the framing as well
Love your content, Rob. I'd encourage shortening the intro. 52 seconds before the video started. Too long.....had to scroll through it. 5 seconds is good intro length.
didn't realize it was that long - urghhh. Was trying to get this our before my rotator cuff surgury
Would canned sprayfoam work if im doing just one wall
As a licensed spray foam contractor the guy doing the spray foam in this video has no clue what the hell he is doing
Agreed.
Just wondering how foam supposed to be sprayed? How do I know when someone does it professionally I’m in Tx I want to get spray foam underneath my house it’s on piers 3 ft above ground
Your sprayer video - is a guy that sucks - he needs to picture frame that shit around the studs & then spray the middle - dang rookie