15 votes

Can I use Styrofoam packaging pieces as insulation?

Exposed styrofoam could be a fire-spreading hazard. I know that when installed permanently it must be behind a barrier material, typically wallboard or plywood, for that reason. For loose pieces... ...
keshlam's user avatar
  • 28.7k
4 votes

How to properly insulate detached wood garage?

It's like any open stud wall, which means there are many options, and which one is "best" varies considerably with both climate and budget and the "inital cost .vs. running cost" ...
Ecnerwal's user avatar
  • 211k
4 votes

How to insulate around obstacles in basement?

You might want to consider making a "energy" wall in front of those obstacles like they do when finishing a basement. Some framing studs and then attach the rigid boards to the framing. A ...
JACK's user avatar
  • 79.9k
4 votes
Accepted

Can you push rockwool through a joist cavity for 10 feet without breaking the rockwool?

There are various densities for rockwool, from very soft to quite hard, but I believe rockwool batts are the wrong material to solve your problem. If you want to inject insulation through a small ...
bobflux's user avatar
  • 9,178
3 votes

Can I use Styrofoam packaging pieces as insulation?

I have used packing styrofoam for some construction material purposes in the past, as a proof of concept. For starters, it is a hideous mess. Regardless how neatly you install it, there will always be ...
Stephan Samuel's user avatar
2 votes

Can I use Styrofoam packaging pieces as insulation?

Assuming the wall is framed 2x4 construction, cellulose insulation can be blown into each wall cavity, insulating and air-sealing much better than foam board attached to the inner wall.
Larry Maloney's user avatar
2 votes

Can you push rockwool through a joist cavity for 10 feet without breaking the rockwool?

Having just insulated some new construction work with Rockwool, I doubt you'd actually be able to push it more than a few inches into the cavity. It would slide nicely along the drywall "floor&...
FreeMan's user avatar
  • 47.2k
2 votes

How do I clean up after an upstairs washer flood?

If the insulation is fiberglass or plastic foam, I'd not be concerned (cellulose is another matter), since this is just a one-time dump of a few dozen liters. You've done a fairly thorough job of ...
DrMoishe Pippik's user avatar
1 vote
Accepted

What is this iron pipe in my attic?

It's an iron vent pipe. See the whole thing disassembled here: Vent Pipe Replacement In Attic While you are at it, remove the craft paper from the insulation. It's not supposed to be left exposed.
Cheery's user avatar
  • 4,878
1 vote

Is this the proper way to insulate & vent shed style detached garage roof?

As long as you have substantial venting at both top and bottom (or near them) this should work fine. No, you don't need additional ridge vent--enough scavenging should occur in that small section. Yes,...
isherwood's user avatar
  • 135k
1 vote

How to insulate around obstacles in basement?

That is a challenging scenario. I've had similar, including the mid-century poured foundation. Some tips: For insulation to work properly you need to encapsulate the air between the concrete and the ...
isherwood's user avatar
  • 135k
1 vote

Aerogels for home insulation in Canada

Generally speaking with insulation it comes down to the best mix of: Insulating Value (one common measure of this is R-Value Product Cost Cost/Ease of Installation Other factors such as fire ...
manassehkatz-Moving 2 Codidact's user avatar
1 vote

Aerogels for home insulation in Canada

According to buyaerogel.com, Spaceloft is two and a half times better than styrofoam as an insulator. A 2 foot by 4 foot by 10 mm piece costs just under 400 US dollars. A 4 ft by 8 ft by 2 inch sheet ...
Mark's user avatar
  • 3,696
1 vote

metal looking ball dust in attic, dangerous?

This is very likely to be slag from old mineral wool. You can see examples of this here: https://inspectapedia.com/insulation/Rock-wool-microscope-identification.php#SlagWool
Sam Morgan's user avatar

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