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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72 views

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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147 views

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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34 views

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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42 views

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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60 views

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 ...
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How do I insulate between bottom/top apartments?

My house is a two-apartment house, where I live on the first floor and rent the second. It's an early 1900s plaster & lathe, and currently has no insulation. I want to add rockwool in the ceiling ...
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Fiber glass In Attic. need knowledge [duplicate]

I have been seeing some dust of Fiberglass(?) floating in the air. Is breathing it, in unhealthy? I was unaware of the equipment in the attic, which I discover all the wrong wiring connections from ...
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Brick wall insulation

I moved into a 30 year old house this fall. The bedroom at the front of the house is colder then the others. Two sides of the room are brick exterior walls vs siding. I was in the attic running ...
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Does dark exterior paint hold and transfer more heat to an uninsulated house?

We are picking exterior paint colors for our stucco house. The interior walls are plaster and there isn’t insulation in the walls. I want to stay away from dark colors because I think it will make ...
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Should I add a vapor barrier in this situation?

I'm finishing my basement. I am wondering about the north wall which is a 2x6 stud wall (walkout basement). I removed the fiberglass insulation an put 2 layers of 3/4" rigid insulation (sealed edges ...
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Ok to add cellulose over blown fiberglass insulation?

I have an attic with blown in fiberglass insulation, probably original and 27 years old. The attic appears to have had some moisture issues in the past (bathroom vents being vented out of the soffit ...
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80 views

Are you supposed to put a vapor barrier on both sides of the common garage wall (wall between garage and house)?

In my garage, the wall between the house and the garage has visible studs and insulation in it. This insulation is 50+ years old and I am going to tear it out and put in new insulation. My question ...
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What is the recommended method of insulating PEX piping?

During the winter chill here in DC, one of my pex pipes that is not insulated and basically exposed to the elements cracked. I blame the contractors who didn't insulate and finish the job, literally ...
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Redoing insulation in the basement of the home I recently purchased

I recently purchased a home and have begun to do renovations on the basement. I am starting to look at insulation and so I have been researching what the best way would be to do that. The problem I am ...
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53 views

How should I insulate my partially finished, currently uninsulated basement?

I am in Alabama, climate zone 3. Half of my basement is finished, well at least it has a dropped ceiling, wood panel walls, an air supply and return, but no insulation. There is an uninsulated ...
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Is insulating basement ceiling or first-floor walls more effective?

In an old house with plaster walls there is a large room on the first floor with wood floor. The walls are not insulated. The basement has no ceiling, so you just directly see the subfloor of the ...
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Should loft insulation cover wall cavities?

When insulating a loft at ceiling level with mineral wool type material, should the insulation cover the exposed wall cavities for external walls?
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Insulation in the basement underneath of my fireplace

I have a gas fireplace that bumps out from the side of the house. It is always been drafty and super cold in the winter, today I went down and pulled down the one piece of batt insulation that was ...
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55 views

Insulation basement (Rigid Foam). What to do in the unfinished area

I'm planning to finish my basement. Most of it will be finished but there will be some areas that are unfinished for storage. I'm planning to use rigid foam insulation and seal it up. What should I ...
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151 views

Fireblocking a balloon framed house lead to rot in the walls?

Conditions: Balloon framed construction, house built in 1930, Southern Connecticut region Does installing a fire-stop or Fireblocking where the sill plate and rim joist meet, block airflow and ...
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62 views

Do you run a conduit under or over concrete wrap in the basement?

My basement concrete wall is covered with a concrete wrap and is anchored to the wall. The walls are unfinished. If you want to add an outlet down the wall to a workbench, do you run the conduit ...
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41 views

Ceiling insulation question

I live in a 2 story city row house in Philadelphia that is over 100 years old with a flat roof. The space between the second floor ceiling and roof grades down from the front to back - 36 inches or ...
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Is the gray insulance material asbestos? [closed]

This is a furnace room. Is the gray insulation material (on the wall and above the pipes) asbestos?
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48 views

Insulating conservatory skylights

How can I insulate skylights? My house has been extended and the extension has double glazed windows for roof, think of it as a very sturdy conservatory. I understand why the previous owners did it - ...
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51 views

Can I use alternative materials to insulate my roof?

We bought a mobile home to use for my office/studio workshop. It's 24 by 60, gutted out with no inside walls, and live in a desert area. The roof leaked and the insulation got wet and ruined. We ...
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Cut XPS and Spray Can Foam or Spray Foam Kit for Rim Joists?

I am looking into two methods of insulating my rim joist space in the basement on a house in Zone 5. I realize that spray foam kits are the cat's meow in air sealing and possibly ease of use - but ...
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23 views

Vapor barrier/retarder requirements in San Jose, CA?

I am living in this old house that has attic insulation on one half of the house. I plan to insulate the remaining half of the house to get it warmer during the few winter months. We don't have Air ...
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32 views

Air sealing advice between garage and conditioned space

I'm trying to air seal my conditioned, but unfinished laundry room which backs to the unconditioned garage. Unfortunately, there are several large spaces (one for the cold air return and another for ...
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51 views

Drilling into cinder block foundation

My house has a block foundation and water issues, I have a company coming soon to install a perimeter drainage system w/ sump pump and he said he's going to install a mill sheet vapor barrier about 4" ...
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112 views

Should I put insulation in a shower wall if it's NOT an exterior wall?

I know that I should put insulation in a shower wall if it's an exterior wall, but what about if it's just an interior wall? Is there still a benefit to doing this?
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185 views

Insulating a Detached Garage Ceiling

Currently the detached garage walls are insulated with batts of insulation, however the ceiling is not, so here in Illinois, the garage is pretty much unusable most days in the winter. I use this ...
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44 views

Soundproofing garden

New houses have been built at the back of my house and they are very noisy. I want to build an outside wall to get some sort of protection. I currently have a standard fence panel and a Hawthorn ...
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Can improved window insulation prevent condensation on the interior of a window

We have a whole house humidifier which is great but one of our windows condenses much more than the others and doesn't dry out because it doesn't get much sun during the day like our other windows. I ...
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Partial insulation of suspended timber floor possible?

We live in a Victorian terraced house and will be putting tiling down in the hallway. I’d like to know whether at the same time we should also do something to improve the insulation of the floor. ...
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Best sound-proofing techniques and recommended sound-absorbing materials?

This is fundamentaly a question about soundproofing and sound absorbtion. When working this project I've realised I don't understand the concepts as much as I though I did. I basically set up a shelf ...
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Can tile or click-lock wood be installed directly on rigid insulation foam

We would like to insulate a concrete condo floor and for height purposes (already low ceilings as well as not modifying fire doors) we cannot add much material to the concrete pad. Typically in this ...
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55 views

Why is the interior wall cold to touch during the winter?

When it gets cold out, about - 10°C, the interior walls are cold to the touch. Especially ones in the corners of the house. What causes this? How can it be fixed?
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Low voltage cabling - insulation

I have a closet that is colder than it should be - it is 2 degrees colder than the bedroom it's connected to. The closet is 4'x4', and has two exterior walls. The bedroom is 10'x10', with one ...
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Will a window insulation kit help with heat loss in the winter?

I have shutters over my windows, but I can never have them open in the winter because, when I do, my room gets very cold. I do not believe that my windows are drafty as I cannot see light around the ...
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Risk of insulation triggering mold growth?

The unfinished basement gets water which is pumped out with a sump pump. (Water from heavy rains percolates into the basement.) Company A gave me an estimate to insulate the attic. So did Company B, ...