Відео

You're welcome and I'm glad that you saw this and that it makes sense. This is EVERY garage ceiling in Pittsburgh, even in homes built last year...ugh. A word of warning though. My brother had this problem in his Atlanta home. I talked to three insulation companies there about the process that we use for dense packing them with cellulose insulation (could also use blown fiberglass but it's likely more expensive and possibly not as effective as it's packed typically at a much lower density which impedes air flow less). The companies I talked to had NO IDEA how to implement our solution. If you watch the video to the end you'll see the equipment needed for this. An insulation blower with an air lock for developing high pressure. Good luck to you! Andy

I try! Thanks for noticing.

Crawl spaces are a whole different animal. Google crawl space encapsulation. That's likely the road that you want to go down. Andy

Thank you and yes, when not shooting video I always do ; )

I'm far from it and no I shouldn't have, sorry not sorry.

should be fine so long as there isn't too much moisture / humidity

@fd3871 ah thanks for the info😊

Good eyes! And you're correct --- but that wasn't exterior wall. The other side of the "back exterior wall" was a bathroom. This space has interior heated walls on all sides.

Great question. When you're talking about insulating unconditioned spaces like attics, you are correct. But this space is actually conditioned. It has four interior wall surfaces that are heated. It's like a closet with the door closed. There will be no "condensing surface" cold enough for water vapor to condense and cause mold growth. That is the nature of the underlying problem that you're referring to.

Some people do!

Great question. The copper lines are underground so they are much more protected. The lines in this attic have already frozen and burst. At one point I show a piece of burst line that I actually found up there. Attics can get much colder than lines in the ground.

Sorry, but wrong. It has been common practice in North America for about 70 years now, not sure where you're righting from. For the last 15 years we've insulated thousands of homes in the Pittsburgh area this way. Air sealing the attic floor sharply reduces stack effect driven air leakage from the home to the attic. This also reduces water vapor transport from the home to the attic. Air seal + insulate the attic floor and properly ventilate the roof works incredibly well and is low risk/ high payback. By the way, subscribe to the channel. I'll be posting a video in the coming weeks of a spray foam " continuous external insulation" failure. It's fascinating. Thanks for commenting!

I'll take that as a compliment, cheers!

he does shoddy work...

It's a common occurrence, but we can fix those problems with the right knowledge and technique.

No, and good eyes. There are no exterior walls that abut this cavity. The "back exterior wall" was a bathroom on the other side. You cannot treat that kind of a space this way. Thanks for commenting!

No, it will rot if there is a condensing surface where water vapor can turn to "wet water." This is what leads to rot. There is not a condensing surface inside this space once this is done. It functions the same as an interior closet with the door closed.

It can be fixed. Applied building science practices can almost always result in a sound solution in residential homes when applied properly and at times creatively. Good luck!

If it's like the scenario in this video that I created, then yes: ua-cam.com/video/2XQK-Ba1hWc/v-deo.html

Correct. When one of the outer walls is an exterior wall we actually use that method. When all walls adjoining are interior we cap the void.

All adjoining walls are interior in this video. There is a bathroom on the other side of the vertical wall. Good eyes though.

Merci! Maybe one day Insulwise will export it's services abroad. Until then people can use our videos as a guide, when applicable, for improving some of the energy efficiency and comfort issues in their home. Andy

Trust me, the workmanship in the US is generally terrible as well.

@@insulwiseenergycomfortsolu3293 thank you for your generosity sharing your expertise improving people’s lives

The void will function the same way as a closet with the door closed. It is surrounded by interior heated walls on all 4 sides. Doing more work than this would not result in any improvement in comfort or measurable improvement in energy efficiency, but it would put a worker at risk of falling through a ceiling and then down a flight of stairs for the effort. Andy

Hah! Well, that wasn't the plan that day ; ) We always try to wear gloves. Best case when you get it on your hands is to let it dry and just be there for the first day. By day 2 it comes right off in the shower.

Yes, and thank you for noticing. We built a raised storage pad around the hatch after it was built. Everything was fixed before hand. This is the end video: ua-cam.com/video/L-J5dkNfp_o/v-deo.html

You did it right! Cutting from both ends keeps the screw holes lined up perfectly.

Appreciate it, more videos are on the way!

I appreciate the compliment! Glad you found it useful.

Hi there, do you live in Pittsburgh?

I believe it. Foam board and foam sealant when used properly can yield incredible results in terms of enhanced thermal efficiency!

Sounds like you’re in for a lot of work but the end result will be worth it!

@ Thanks for reading my long post lol! Yeah, the fam already has noticed for the better.

I’ve got the same problem with my parents’ 1960 ranch. There’s no insulation under the floor, no insulation in kitchen-family room (open concept BS) ceiling, some insulation in the ceiling to the back of the house, very little if any insulation in the outside walls, and no insulated windows or doors. Plus none of the rooms have finished molding. Reason for all this is my dad wanted a house that breathed. It breathes alright. It’s expensive to heat and cool plus all kinds of little critters like frogs, chameleons, spiders, and bugs get inside all year round because it’s so open.

@@JohnFourtyTwo "It breathes all right" LOL. Ahhh man I'm sorry, but that was funny. This was a 1960's ranch that we were working on here. They're usually great little houses to work because they're typically build sold and are uncomplicated. I've got a series of vids that could help you get a better feel for some of the processes you may want to employ there on our channel.

@ I’ll look them up thank you!😉👍

This system was about 5 years old, so there shouldn't be any risk of a line set leak for 20-25 years. If they need to access them for change out you could uncovered them with a jab saw or box cutter in about 10 minutes. In the interim they operate more efficiently then they previously were.

Yes, all homes that have attics have air leaks hidden everywhere in them. Nice work getting the bathroom vent in. Did you vent that to the outside through the roof or gable wall? You shouldn't get mold growth on your inside walls / ceiling unless there is missing insulation in an area. Those areas can get cold and water can condense there with eventual mold growth. If you can air seal the attic floor, you will have naturally higher humidity inside the home because you're not constantly losing warm air and water vapor from inside the home to the attic. Andy

It's class A rated I believe. But if you've got a fire going inside your stairwell void that foam board will be the last of your problems.

Thank you! We try to be!

Good question and yes. If you filled that with cellulose it would significantly dampen any sound that was previously moving through it. Cellulose is an excellent sound deadener. Andy

I was thinking filling the void with leftover fiberglass insulation bats during original construction and then sealing it off with the foam board and spray foam.