Fixing gaps in your wall insulation without using spray foam
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- čas přidán 21. 08. 2024
- Insulation is a critical part of your building envelope. When it’s installed right, you reap the benefits of a longer lasting building, a more sound proofed building, and a more energy efficient building. Thermal imaging, can be used to find issues with insulation, and allow for a trade to remediate these targeted location. Overtime insulation can move, or it simply wasn’t installed well during construction. When retrofitting insulation, ensure that the insulation is not abutted to brickwork. Your insulation can absorb moisture from outside, which can encourage the growth of mould, inside your wall cavity.
#insulationconsistency
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Products for your building envelope.
tighthouse.com.au
I understand about the insulation not coming into contact with the brick veneer............ but how does the same effect work with blown fluff? I was about to order blown fluff like you have shown in previous videos. Surely that comes into contact with the brick and as it sags over time i would expect it definetly pushes against brick at the bottom of the wall
Continual learning, Thanks
Great advice!
Love these vidoes , thanks.
Hi John, at 3:00 it says if there is foil sarking, insulation can go straight against it. Couldn't this also cause mould issues, as foil sarking is vapour impermeable. ie: moisture transfers from inside, through the plaster, through the insulation and hits the foil sarking. There is no air gap between the sarking & insulation batt. Or are you saying the vapour should run down the face of the sarking?
I'm interested as I'm looking at retro-fit insulation options. My house is a BV home built in 2003 - with a foil sarking wrap but no wall insulation. I'm worried about moisture/mould etc with potential retrofit options. Thanks.
The insulation abutted to the brick, can create a Capillary action sucking water out of the mortar into the insulation. You should not have issues.
Why not a piece of vapor permeable house wrap ? , the strapping seems a bit flimsy.
That’s another option! Agreed! A product like this. tighthouse.com.au/collections/building-wraps-accessories/products/enviroseal-proctorwrap-rw-it
It comes back to the scope of work the owner prepared to take on. Unfortunately, it is impractical to install a vapour-permeable house wrap without removing the external skin of bricks. even if the tradesperson managed to slide the wrap in the cavity, fixing the wrap on studs and sealing the wrap at the top and bottom of the wall are virtually impossible.
@@josephcheung3964 like they did in this retrofit here at the 4:41 time stamp.
czcams.com/video/CxP14Huwd0k/video.html
Big job but it's another idea to think about.
@@davidgreen424 Personally, I don't think what they were doing is a good idea. If there is any wind-driven water (rain) getting on the face of the building wrap, the method they use to install the wrap does not allow for proper drainage to occur. The liquid water will follow the wrap and get drawn into the gaps between the wrap and the noggins by capillary action.
@@josephcheung3964 yeah that's true , I hadn't thought of that . I intend to remove all my external hardi plank and batt , vapor permeable rap and tape rather than sprayfoam from the inside .
It looks like you have gaps in your mortar, if you put in insulation will you not get mould?
Nope, that mortar is sealed, using 4 coats of a clear matt finish. 😉
There is also insulation behind that wall.
Can efficiency matrix help with the insulation retro fit or do you guys only do the audit? I have a thermal cam and can see large patches in my ceiling with no batts. Unfortunately no roof space access so ceiling plaster will need to be cut open.
Hey Mark,
If it's your ceiling, then you might have the option of lifting some tiles/roof sheets to get access. (Saves you ripping off the plaster) We are contractors specialised in insulation and draught proofing for existing homes in Victoria. Feel free to give me a call. Happy to give advice.
Cheers
Trevor
@@ecohome3203 thank you Trevor. How do I find your contact details? Doesn’t seem available on CZcams.
Http://www.ecohome.com.au
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Two questions from Canada (if that matters):
1- how come you call it "inshulation"? Is this like "ash-phalt" rather than the American 'ass-phalt'? Not bothered, I'm curious if it's pronunciation local to you.
2- you've not yet sold me on which tech to use and how to do this for longevity - is mineral wool better than spray foam for sealing and for staying in place? Is this a job which homeowners need to plan for, every 20 or 30 years? When we replace / re-brick our 100 year old cold north facing wall later this year is it feasible to do the entire wall at once or - why this small patch demonstration you're doing here?
Thanks for all the great insights and clips over the years.
We say “inshulation”, for the same reason you guys say “aboot” instead of “about”, I recon. Either that, or John has a nasty speech impediment. A lot of homes down here aren’t very well inshulated so, gaps like this are quite common. Thanks for the comment! 😉
remediate? That is not a verb. It is remedy. Look after our language or we will take it back
By jingo by crickey, we speak Australian down here, Mate!😂. It may sound like Engrish, but it’s not.
What a useless video?
Basically insulting a wall with a fiber then patching it with a gypsum board.
Great job!
Insulting a wall with a Fiber?