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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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Can I install insulation behind a shower stall that is already in place?

I am in the process of renovating my kitchen. I removed everything down to the studs. One of my bathrooms backs up to my kitchen. Once I opened up the wall behind my bathroom shower stall (a ...
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How do I deaden the sound of water dripping on metal?

I live in a two story apartment complex (upstairs neighbors are REAL nice). My bedroom has an AC Box/Swamp Cooler mounted into the wall. Directly above it is a similar unit for my neighbors. The ...
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Insulate back of high and low voltage gang boxes in attic

We just finished building a home, and I prewired an equipment closet upstairs for handling all of my networking, home theater and whole home audio equipment. It looks like this: All the single and ...
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Is tape an effective way to hold on a foam elbow?

So, one of the things I want to do around these parts is insulate (lag) the hot water piping in this house's basement to the best of my ability (especially since part of it is in a crawlspace that's ...
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Would insulating a door between my closet and attic help keep the closet warmer?

In our new home, in the back of our closet the previous home owner had put that flimsy thin wood paneling as a wall in between the back of the closet and where the triangular part of the roof is about ...
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1902 house. Really cold winters. Insulation question

Ive got a 1902 house in montreal where it gets down to -30C during winter. Usually its about -15C. Its also very humid here. I just bought this place and noticed there is no insulation in the walls ...
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is this Asbestos? or anything dangerous?

In my garage there are some water pipes I believe that have a wrap around them and in some places its expanded and opened. Now I am worried if its asbestos. Its yellow and looks puffy. I near a water ...
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Cheap material for stiff, thick, lightweight, insulating walls?

I want to construct a large water tank. The walls need to be fairly thick (several centimetres) very stiff (they will be decoratively plastered inside and out and the plaster should not crack) ...
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What happens to foam insulation board after you pour concrete slab?

I plan on making a garage out of a large carport, and I've watched and I understood how to properly insulate a new concrete slab. 4 inches of gravel, vapor barrier, 2 inch foam board, 2 inches of sand ...
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Basement moisture on foundation issues

After taking all sheet-rock down I noticed that all walls (cement block) siting under ground are moist. Some of them even ate through footers. After farther look at the house I found out that their is ...
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Covering exposed insulation paper face

Other than gypsum, what else can be put over exposed insulation? Code wont allow for exposed paper. If not tyvek than what specific product can be used? The company that installed my insulation, which ...
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Condo Sound Insulation, Warranty

Similar to this, but not a duplicate: How can I determine the STC (Sound Transmission Class) rating for my condo walls and ceiling? The goal: Verify if I have a claim towards the developer who says ...
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Noise insulation of apartment right above noisy pub

How good can you isolate an apartment that's right above a very noisy rocker's pub? Could we install a thicker floor, or would the noise go through the walls anyway? What material would work best ...
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A more thermally efficient house - can I block up vents in my brickwork?

I live in the UK in a typical '1930's semi' house. It is built with two layers of good old bricks and a cavity wall inbetween them. In my hallway, there is currently no carpet or hardwood flooring - ...
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Why don't conduit fill rules apply to cables encased in closed-cell foam?

I have a question that is more theoretical in nature. I know that when you have 14/2 cable and put it in a 1/2 conduit you are above fill (or just at max fill). The NEC cites that this is in part due ...
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Running romex in 20" attic space using pipe hangers

My drywall ceiling is attached to 2x6 joists 16" OC. Then, a 10" air gap above these joists are the 2x6 rafters 32" OC, for my flat roof just above. Even though the home is 1955, I have knob & ...
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Unfinished basement in Georgia townhome; would vapor barrier on interior trap moisture?

I have a town house that is a middle unit on a slab. The back wall is above grade, with exterior windows and door. The sidewalls abut adjacent units, so there is no wall in contact with soil for the ...
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Favorite adhesive for gluing foil faced poly-iso against concrete?

In the basement, gluing FOIL FACED Poly Iso to the foundation walls (Poured concrete). I was planning for XPS and was going to use proper foamboard adhesive. However, I am now going to be installing ...
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Open cell spray foam off gassing 2 years later. How to fix?

My home was built in 2017 and has Accella open cell spray foam in the unvented attic. In spring & summer 2018 we noticed a mild chemical smell coming from the attic on hot and/or humid days. It ...
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Insulating garage

Dallas, Tex. Building a new home. Builder does not insulate garage. We had a friend put in r-13 faced but he installed it paper side against sheathing on outside wall. Is this ok?
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What is the best way to insulate cold water copper pipes exposed on a flat roof in California

We live in Los Angeles and have a flat roof that our hot and cold water copper pipes run across and are all exposed. The cold tap water, in the spring, summer, and fall is so hot during the day. ...
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R5 or R7.5 XPS before R11/R13 Fibgerglass for basement in Zone 5?

Insulating basement walls that are most below grade. Zone 5, and using a mix of rigid foam board and then framing 2x4 walls and insulating between the studs with R11 or R13 (whatever is on sale and ...
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Insulating built-in air conditioners

My apartment has Frigidaire built-in air conditioner holders. I did not buy a Frigidaire AC unit because the size needed to perfectly fit the holder was unnecessarily large (and expensive). I have a ...
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How to insulate the inside of a door

I am building a sliding door with a frame made of 2x2s covered with plywood panels on each side. I would like to make it reasonably soundproof and was planning on filling the void with some insulation ...
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Insulating a steel outbuilding, first major DIY project

My parents just bought a house. My dad, a disabled vet spends most of his time in his workshop. His new workshop is a 700 sq ft steel outbuilding that has no insulation. I have a local AC company ...
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How to replace UFFI insulation in walls with no access from basement or attic?

I recently bought a house, and had an energy assessment done which determined that my exterior walls have old UFFI insulation that is rotting away, leaving substantial gaps and allowing heat transfer ...
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noise reduction from a wooden ball wall

My husband and sons built a wooden wall in our backyard to use as a ball wall for soccer and lacrosse. Our boys bounce the ball off the wall to practice. It is about 10X10 frame with plywood affixed ...
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If I blow insulation everywhere in my attic except the door trap, will heat escape through it?

I want to blow insulation into my attic. The door into my attic is on the floor and made up of a large board which doesn't have hinges. I have to push the door up and slide it over in order to gain ...
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Pipe not straight, touching another pipe - possible fixes

Problem: hearing clicking metal noise when water-based heating is on. Because this sound travels so quick, it was very hard to find the spot, but finally found it - right below the outlet. Opened the ...
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Insulating basement concrete walls - anything missing?

Live in Zone 5b, going to shoot for 2" of XPS DOW foam board. Planning on gluing it to the concrete wall with foam board glue and bracing it while it cures. It will run to either the top edge of ...
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Insulating a replacement insert window

It seems that if I want to properly insulate our windows, I need to choose a full-frame window replacement vs an insert. Since our house has stucco siding, I fell this may quickly get more ...
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What is this picture of an insulation blower showing?

This seems to be showing a guy aiming a cellulose insulation blower at an open wall, and somehow the insulation is sticking to the wall in perfect strips. What is really happening? This is from the ...
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Is partial double glazing worthwhile?

My house has single glazed windows. I understand that bubblewrap can act like double glazing, however doing this will ruin my views. Is there much advantage in only covering part of the Windows (say ...
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Cape Cod Insulation/Snow Melt [closed]

Is the melting pattern on this roof a sign of really poor insulation in the knee walls? Thinking about purchasing, but I don't want to spend my life fighting a poorly designed/insulated house if it's ...
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I rented an insulation blower. How do I get the insulation into the attic?

Apparently the blower weights 150 lbs and I'm not sure if I can get it up into the attic. Or, perhaps, are the hoses long enough to reach all edges of a 1000 sq ft attic without requiring the blower ...
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How are Clopay Intellicore garage door R-values so high?

Clopay's garage doors with their proprietary "Intellicore" polyurethane foam insulation claim R-values as high as 20.4 in a 2" thick door, or R-10.2 per inch. State-of-the-art spray polyurethane ...
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What are the minimum insulation code requirements for a steel arch building (Quonset hut) used as a residence?

I'm interested in building a steel Quonset hut home in central Texas. I've done a fair amount of research on what's involved, but I'm stuck on insulation. The IECC defines minimum insulation ...
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Rigid foam board between flat roof rafters

I have a bedroom I am renovating with no insulation. So I took down the ceiling and towards the back of the house the roof rafters actually almost line up with the ceiling itself. I thought that ...
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Would mylar provide adequate insulation for an infrared sauna located outdoors?

I'm planning to purchase a portable indoor infrared sauna to be located outdoors under my deck. Although ambient temperatures in the SF Bay Area are fairly mild, I am concerned that it might take ...
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How do I insulate my unfinished basement with half foundation, half siding?

I have a 1910 bungalow with an unfinished basement. The issue I'm encountering is that the main floor gets extremely cold in the winter and requires a lot of heat ($$$) to keep it warm. The unfinished ...
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Our top floor is finished/heated. How to prevent ice dams?

I'm in snowy Minneapolis, living in a 3-story house built in 1886. The top floor is fully-finished and heated, and there's no attic. We've been getting crazy ice dams this year, but not previous ...
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How thoroughly should I scrape paint from cement basement wall before insulating?

I'm going to finish one corner of my basement and want to insulate the two adjoining exterior walls so that the space will stay warm in the winter. The wall was painted a few years ago and the paint ...
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How would insulate/fill this large enclosed area behind my gas fireplace

I’m currently remolding most of my bathroom because I found some black mold behind a shower tile and then there just kept being moisture the more I uncovered. After opening the wall behind my ...
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Does this look like loose fill Asbestos?

I found some type of loose-fill insulation stuffed behind standard fiberglass insulation while cleaning up my basement. The home was built in 1947 and I'm not sure if what I found is Asbestos (see ...
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Building an exterior wall within an exterior wall for insulation

I just purchased a 1925 beautiful home that is stucco on the outside and old plaster on the inside. I have some carpentry experience and am realizing the incredible loss f heat to the exterior walls. ...
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Insulating between floors?

I have a "modern" UK house (approx. 15 years old, built as cheaply as possible, a wooden house with a brick shell). If it is cold outside and I heat the ground floor to the minimum I would like, then ...
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Can spray foam be used between Rim joist and exterior sheathing?

I have a 40 yr old single story modular home set on a block foundation. I used a thermal temperature gun to verify a temperature difference. the insulated wall is approximately 1 to 2 degrees cooler ...
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Refrigerator Side Wall Hole Closure - Need suggestions

In my side by side door refrigerator, there is a hole in the side wall on the right compartment that is intended for letting controllable amount of air from the lleft / freezer side of the ...
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Can I add insulation to exterior home walls without redoing all the drywall?

I recently bought a house and Ive found out the insulation is not good enough in the exterior walls. Is there a way that I can just cut a small hole and maybe blow in insulation into the walls ...
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Root cellar insulation

Building a root cellar in corner of full basement. No water issues. Humidity is relatively low in winter (SW Montana). Details: The root cellar will be located inside a full basement . The basement ...