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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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 ...
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Reducing noise from hardwood floors

We have a ranch (single-story) house with hardwood floors on most of the ground level. The basement below this level is finished, and is where I work out of at home. We have kids that like to run ...
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How to fix an ineffective Extraction Fan setup in bathroom

I have an existing IXL (Heat, light and Fan) setup in a small bathroom (12.14 meters cubed). The air exchange rating of the fan meets the spec required for the room, it works and doesn't look that ...
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How to correctly add flooring to insulated attic

My attic is well-insulated with fiberglass insulation strips laid between the joists, silver thermal wrap stretched across the joists, and 18-20 inches of blown insulation on top. But as I ...
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When finishing a basement, how do I transition from walls to doors/windows?

I am planning to finish my basement, which is currently naked poured concrete foundation throughout. I have a new door and new windows (only one shown in the Figure below because they are identical). ...
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How to insulate / finish a row house basement?

I am planning to insulate the basement of my row house. Given that I'm in Region 5, I will need proper insulation on the exterior-facing basement walls. But what about the walls facing the neighbors? ...
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Can I install Insulation board in the interior wall with House wrap on the exterior

I am insulating a shed as a wine cooler. I have house wrap on the outside. I will install unfaced batt insulation between studs. Can I then install foam insulation board under the drywall? I am ...
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Can I use free denim insulation that got wet outdoors?

I found some denim insulation on craigslist for free. It's really inviting to me as I'm on a tight budget and would really appreciate not having to buy my own insulation for near $500. I asked the ...
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What is the R value of Kapok Fiber

I'm attempting to find a green and cheap insulation for the roof of a school bus conversion I am building. Kapok is easily sourced for me as it literally grows on trees. The dimensions of the roof ...
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Air conditioner

I removed two old wall air conditioners from our house. Unfortunately they do not make these wall units the small anymore and having a Hard time finding a small air conditioner? I was wondering does ...
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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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39 views

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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21 views

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 ...