Questions tagged [insulation]

Insulation is any material used to slow the transmission of heat or reduce the transmission of sound. Typical materials include fiberglass, foam, blown cellulose, and reflective foil. This should not be confused with weather stripping.

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52 views

Is it ok to enhance pipe insulation with fiberglass batts?

I have hot water baseboard pipes running along the inside of the knee wall attic behind my second floor bedrooms. They are covered with old pipe foam sleeves. The knee wall is insulated as a ...
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64 views

What is an acceptable temperature difference for rooms over garage vs not over garage in a new home?

I recently moved into a new construction home where there are rooms above the garage. I've read several articles about how you can add insulation, but I am trying to figure out what I should ...
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Old home, is this asbestos in the attic?

House was built in the 40s and moved in the 70s, no idea if it was reinsulated or not after being moved
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Alternatives to wool pile weatherstripping for an aluminum frame door

The wool pile weatherstripping in my patio door frame is disintegrating. The bristles are just falling off on contact. Parts of of it (most likely a section that deteriorated early) had previously ...
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Is it OK to install insulation, with a vapor barrier, before a moisture barrier is applied to a home's OSB sheathing?

Is it acceptable to install insulation, with a vapor barrier, before a moisture barrier is applied to a house's OSB sheathing?
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What is this white sheet behind the insulation?

Was in a house this weekend with a little bit of insulation. Behind it was a white sheet that i haven’t seen before. Is it a vapor barrier?
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When can insulation against external walls be done for new construction?

Picture a new construction house where wood framing is complete and a roof has been added. How soon can insulation against external walls be added? Are there other steps that must be completed prior ...
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71 views

Potentially asbestos?

So we're doing a tear-out of the second half of our kitchen, and we came across some old batt insulation in the wall chases from the forty eight company(one of the companies sued out of business from ...
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20 views

How should I insulate garage ductwork when no gap exists between ductwork and ceiling?

I currently have uninsulated HVAC ductwork running the width of my garage. There's no gap between the ducts and the plaster ceiling above it. There's also very little clearance between the ducts and ...
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Replacing R7 in exterior home walls

I really appreciate all the great feedback from the forum members on various questions. We are working on lots of renovations to our home that is located in Toronto, Canada. It was built in the early ...
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47 views

Insulating a Wall Against Unconditioned Attic Space

I'm looking for help in insulating my 1950s San Diego house. A second story was added in the 70s and a gas furnace + A/C was added about 10 years ago in the unconditioned space above the downstairs ...
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Is there any study or calculation on how much money I save if I buy door/window X with a certain R value vs door/window Y with a different R value?

Is there any study or calculation on how much money I save if I buy door/window X with a certain R value vs door/windows Y with a different R value? I am afraid that this whole thing with better and ...
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44 views

With a vapor barrier installed, how critical is slashing/destroying faced insulation underneath?

After installing a vapor barrier, forgot to slash/destroy the faced batts of insulation within some wall cavities and/or ceiling areas. Am I in "OMG deep doo-doo" for not slashing the batts, or ...
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24 views

fixing sagging insulation

I have a two story 1970s home that has basically storage rooms upstairs off the bedrooms where the roof angles down. Inside these rooms is the studs and insulation facing the exterior roof. Since ...
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33 views

Insulating a vehicle ceiling, exterior vs interior application with cork

I have a truck with a large doka (9 seater crew) cabin. This is uninsulated at the moment. I am considering options for summer and winter insulation but do not want to sacrifice head space. I ...
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Do I need a moisture barrier outside my garage wall insulation?

I want to insulate my garage and drywall it , The outside walls are bare brick with 2by 4 studded walls on the inside do I have to put a plastic barrier up before I use batted insulation to keep ...
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Easy/Cheap fix to insulating 2x4 exterior wall in Maryland

I am living in an rowhouse with exterior walls built of 2x4's. When it gets really cold in the winter - I can feel the cold coming through the wall of my bedroom when I put my hand on it. The wall ...
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Great Stuff Foam sealed gas pipe, fire safety

So I have a pipe penetration problem at the gas pipe. I hired a contractor and he decided to use great stuff to seal the gap. Would it be a fire safety problem? Thanks,
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Do these insulation panels contain asbestos?

The landlord said that "it's plastic stock, left from renovation on windows" from another apartment. It doesn't look like plastic to me, but then again I don't know much (very little actually) about ...
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35 views

Keep and patch, or replace white rigid foam during basement remodel?

I'm removing old wood paneling and drywall which is glued to (what appears to be regular Styrofoam) foam board, which is glued to a cinder block basement wall. The goal is to add more insulation (2x4 ...
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56 views

What’s best for attic insulation

I want to improve my attic insulation. What is the best option to use - Fiberglass batts or blowin insulation? The code says R-30, but will R-38 or higher be better option (New York area and also plan ...
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28 views

Air sealing vent baffles in cathedral ceiling

I am reroofing my house. I am taking the opportunity to pull up the decking above the cathedral ceiling and adding air baffles to help cool the roof and reduce ice dams. In order to accomplish this, ...
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RUST! are items more rust prone in an free standing shed than in my garage?

my garage is not heated or cooled but it seems tools dont rust there as much as in my free standing shed. why is that. can i simply cover outdoor metal items with a tarp to inhibit large % of rust ...
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Is insulating suspended floor void with spray foam effective in reducing noise?

I am having my cinder block party wall insulated with stick-on panels. The property is a two story terraced house, and it has been recommended to insulate the void from floorboard to ceiling between ...
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Should I use reflective insulation over other kinds of attic insulation?

I just moved into a house made in 1969, it gets really hot during the sunny days and cold during the winter. I'm living close to the rocky mountains just so you have an idea how cold and hot it gets. ...
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How important is the weather stripping on the inside of a Velux skylight?

I just had the inside of the wooden frames around my Velux skylights painted. The painter did a good job, but I think when he was removing the masking tape from the skylight's frame, he pulled off a ...
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Foam insulation around edge of bath. What is its purpose?

While doing some bathroom renovation, I noted foam insulation around the edge of the recessed bath when examining underneath it. The foam would extrude in places above and below the edge of the bath ...
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Finishing garage for year-round woodworking workshop

In Toronto, ON and I'm finishing my attached double garage (20x20) in hopes of setting up a woodworking shop. It's not currently heated or cooled but I plan on using it year-round so heating is ...
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Storing comsumable dry goods in your car in the summer? [closed]

I live in South Florida where the summer sun has no mercy. I drive a new van and I've taken steps to keep the inside cooler during the day. I live in the van for weeks at a time and need to store ...
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insulating a sauna

I bought an indoor cedar infrared sauna but have little space inside for it so have it on my covered deck. I do realize it should not be outside over the winter but it is difficult to move it on my ...
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Crawlspace encapsulation

This past weekend I recently had to fix the flooring of my family cottage. In a heavy-traffic side entryway, the plyboard floor was bending when you walked over it. We opened up the floor to see ...
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36 views

1x8 roof sheathing VS plywood/osb

My 1955 home has a flat roof with 1x8 sheathing. It's time to replace the roof, and I am considering replacing blown-in attic insulation with batts, at the same time. The attic is only 20" between ...
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35 views

Concrete slab insulation is in the way - cut it back for flooring?

I have a converted garage built on a concrete slab. The slab is insulated with styrofoam panels which extend into the room about three inches, so the flooring does not go all the way to the interior ...
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45 views

Fiberglass batts: how to cover the exposed paper?

I need to install fiberglass batts under my (raised) house. I have read that the paper should generally face the warm side, so it depends on where one lives. I live in South Louisiana, so I plan to ...
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29 views

Insulating Cathedral Ceiling

I have a 1989 house with a cathedral ceiling built 2x10 rafters 24" oc. I am about to redo the roof, which would give me a chance to pull up the decking and improve the insulation. I am guessing the ...
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fiberglass: faced or not?

My house (in New Orleans, where it is hot and humid most of the year) is raised more than 5 feet off the ground and there is old fiberglass insulation installed between the beams under the house, ...
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65 views

Asbestos insulation?

I recently found this insulation up in my attic. Can anyone tell me if this could possibly contain asbestos?
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56 views

Shower head on exterior wall - Insulation R-30 Rock Wool

We are currently building our home in the Utah area that is within 30 min of Salt Lake City. Our homebuilder recently decided to place the shower head in our shower facing the door - needless to say ...
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How to make attic easier to traverse?

My attic is a maze of wires, air ducts and PVC water pipes. I went just one room over from the attic entrance and it took me a solid 30 minutes just to go there and back. Would it be unreasonable to ...
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Insulation foam inside PVC sleeve for silcock

I just installed an outdoor silcock outside my basement. To avoid direct contact with the brick in the hole I drilled in a foot thick brick wall, I put a 1-1/4" PVC pipe and then the silcock inside it ...
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Running new electrical with drywall removed, but insulation installed

I had to pull a 4' high and long section of drywall out of my garage due to a ton of damage in various places. While that's off, I'm planning to lower the electrical boxes along that wall about 3 ...
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Is this cloth jacket surrounding my electrical asbestos?

Checked to see what was going on behind the electrical socket, and discovered this fibrous wire insulation. Also, I think who ever installed this 3 prong outlet in the first place did so illegally ...
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63 views

Should I worry about this pipe insulation? (fiberglass vs asbestos)

I have found those pipes in my basement. I hope its fiberglass, but not sure if its asbestos, because it got placed in the 60's or 70's (in my country the use of asbestos got banned in 2005). These ...
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37 views

Improve existing roof insulation from the inside

We have a pitched roof (1971 house, The Netherlands) which consists of (outside to inside): Tiles 2cm PUR insulation 2cm wood We asked a few companies for quotations to improve the insulation (...
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where to run pex in cabin

pressure tank in unheated cabin Best way to keep a PEX run in an attic (above a foyer) from freezing? I have the full well and pressure tank system finally working :) Need a run from the wiring ...
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53 views

How to insulate garage walls from the outside?

I have a partially finished double garage that has no insulation in the exterior walls. Half the garage (10'x20') is finished and is now my office, and half (also 10'x20') is now a workshop. The ...
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38 views

Attic Insulation Questions

We live in an early 1970s ranch style house. Single story. Attic formed by the 2x4 trusses on 24 inch centers. The insulation is R13 batt layed on top of the ceiling dry wall but this has been removed ...
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The new AC doesn't cool the house down like old unit, what can be the problem?

I had to replace my old HVAC because it was old and had a freon leak. The new unit doesn't cool down the house like the old system. The ac runs all day and it takes hours to get down to 72 degrees and ...
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Is there an industry standard for insulating a home during a remodel?

I just went through a horrendous remodel and moved into my home 4 days ago. I was surprised to learn that I can hear every noise between the first and second floors and inquired with my builder, only ...
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How can I keep my computers cool in a 100 degree house?

I live in a tiny house of sorts and my AC doesn't run while I'm not there. I have two desktop servers that I use for my work which are currently stored elsewhere, but I'd really like to move them to ...