 All right still looking for air leaks in this house, and I did what I should have done last night, but I was too tired I put the door back on The knee wall so I can see what's going on so if you can close the door on something you can see how much it leaks So let's see what that looks like So I'm doing something called zonal pressure Diagnostics see how it's reading about seven right now and this tube is going outside Now this is not a really good seven that take a look at that gap up there And there's a big gap in the side in the bottom that door is crooked as a politician But when you seal houses this way the hatches no longer really matter Except that number there is still not very good So I have the blow-or-door running. It's pulling on the house at almost 50 pascals So that's still about 15% connected outdoors basically double the number plus a little bit in this case Test pressure should be 50, but we can't quite get there because the house is still a little too leaky And then you can see my couple of QC and air sealing tools I've got the wizard stick there and then a can of spray paint You can see like one little spot right there that I noticed leaked and We have been opening things up. So I'm kind of smacking myself because I missed So you just take Barber cloths of size you got and take it around and stuff it in there that's going to serve as a backer to the spray foam that we will hit this with here pretty shortly like talk about Lo-tech there's nothing super fancy here So that is Now kind of sort of stuffed it's not amazing, but it'll work and In this case you get immediate feedback No, I didn't stuff it as well. So we tried this a minute ago and we got it down to four So I actually did a bad job stuffing So I need to double check that but you can see I'm down from seven to six So you start getting an idea of how big different leaks are Also, I don't know what's going on over here The way that it's built we were just filling in but beside one joist coming across but So when you obviously you can't see it right now Well, somebody might have opened the door downstairs, let's see if it'll still show leakage or not It is There we go. See how it's blowing straight up right there That tells you there's an air leak So I don't know exactly what's hiding under these floorboards, but something is so we're going to Take a sawzall and open this up. You use circular saw and there's a bunch of different ways to get it done We were hoping that it might have just been this little thing over here, but it's not But this gives you somewhat of an idea. So you look with the handy smoker You touch up misses with spray paint and then you have to decide to open stuff up pretty often and the whole time if you Have a door on whatever space you're testing and you can check with a Monometer like that and see just how much you're pulling the leakage down you you have an idea of when you're done So my goal on this is to get it to about three. I already saw we could get it to about four So We are well on our way And so this house was down to about six thousand I think we'll probably see five today and Maybe we'll get lower than that or maybe I'll with horribly because that happens, too but anyway, this is how you Do air sealing and then you check to see what's going on and hey Neil. Thanks for watching So Keep your eyes open for this. I'll do another video later Once we're done with all the air sealing on the house Thanks for watching. I'm Nate the house whisperer