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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30
votes
4answers
18k views

Should I agree to have more insulation added to my attic?

I have a 6 year old home with about 12 inches (R-30) of blown-in insulation in the attic. Recently door-to-door sales representatives for an insulation company offered a free inspection and quote to ...
22
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4answers
83k views

I added insulation to my attic rafters, but should I have left room for airflow?

I added insulation to my attic rafters and plugged the space between the outdoors and my attic with insulation. It lowered my heating bill by $150/month, but I've seen some information that I may ...
21
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6answers
13k views

Is it important not to scratch copper wire when removing insulation?

I use a small cutter made for max 14 gauge wires, but I'm bad at removing insulation, it takes me a bit of time to get it right, so I end up cutting and repeating, because I see scratches on copper ...
18
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6answers
6k views

Wind from kitchen sink drainage pipe

We live on a windy coast of North Sea. High wind is a norm here. One of the problems I face with the wind: it comes out from kitchen sink drainage pipe. If it is blowy outside, you can feel a draft ...
18
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5answers
6k views

How can I insulate my garage door?

Over the past year I've been converting our integrated garage so that it's a usage space. I've painted the walls, got lighting, power and water connected (To allow for a washing machine to be ...
18
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3answers
3k views

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 ...
14
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4answers
8k views

Does building insulation wear out and have to be replaced?

First, a little back-story. I've been having trouble with the air-conditioning system in my south-Texas apartment home for almost two months so far this summer. The apartment manager has been ...
13
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8answers
79k views

Are curtains effective for keeping the room warm?

I live in a rented apartment and I am trying to find solutions to keep the heat in. The apartment has several big windows (the 'living room' has one wall that is 80% windows) and I have to run the ...
12
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6answers
38k views

How can I insulate my attic on a tight budget?

My attic is running 135Fahrenheit (55 Celsius) and more right now. And that's before it even gets to the hottest part of the day! The A/C guy said the A/C's are working perfectly. But he tested the ...
12
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6answers
55k views

Why don't people use rigid or spray foam insulation in attics?

I'm looking to upgrade the insulation in my attic bumping it from an R-6 to R-30 or better, and while looking into things I realized I've never seen anyone use rigid or spray foam insulation in an ...
12
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7answers
69k views

Is there an NEC-compliant method of repairing minor damage to electrical wire insulation without a junction box?

While trying to pry loose a stubborn cable staple that fastens a 14-gauge electrical cable to a stud, I accidentally tore a very small hole through both the outer jacket and the insulation around the ...
12
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8answers
26k views

How do I remove blown in attic insulation?

I want to replace the drywall ceiling in my house. It's old and has been painted over a million times. Home was built in the 50s. How do I replace the ceiling without replacing the insulation? Or if I ...
12
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8answers
96k views

How effective are outdoor foam faucet covers to prevent freezing?

Everyone seems to suggest using those styrofoam faucet covers to help prevent the pipes associated with the fixture from freezing. They're cheap so I have them anyway (plus I'm not in a hard freeze ...
11
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5answers
96k views

What can I do about a room over the garage with temperature problems?

I'm learning many things about our new home. This winter I learned that a room directly above a garage stays much colder than the rest of the house (up to 10+ degrees colder in our case). What options ...
11
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3answers
34k views

How bad is it to have wet insulation?

With this recent blizzard we recently saw our ceiling lighting fixture leaking water (slow, about 1 drop every 5 minutes) I got up in the attic and saw that some snow had been apparently blown into ...
11
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2answers
57k views

What type of tape is used to seal vapor barrier seams?

If I was installing vapor barrier in Canada, I'd use Tuck® Contractors Sheathing Tape. However, after a trip to the local Home Depot (USA), I came up empty in my search for Tuck Tape. I did find ...
10
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2answers
14k views

My neighbor keeps complaining about my music. How to soundproof my apartment?

I live in an old apartment building and the walls are thin. This is a problem because I love to listen to music -- sometimes at odd hours of the night. Yes, I can be an asshole in this way. But my ...
10
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2answers
4k views

Do I need to insulate exposed foundation in my garage?

I have a 2 story split-foyer ranch. The bedrooms upstairs are above the garage and noticeably colder than the rest of the house (I live in Connecticut so winters get pretty cold). There's no climate ...
10
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4answers
3k views

Is it required for effectiveness to stretch interior window film?

Thanks in advance! Please let me know if I should provide more specific information, or if this is covered somewhere else. Short version: I am using a Frost King window insulation kit on a window. ...
10
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2answers
4k views

Should I insulate an attic that's over an open porch?

I have a 6ft (approx. 2m) wide porch at the front of my house. The space above the porch opens into the attic, like this: Diagram of porch/attic/house goes here http://img825.imageshack.us/img825/...
10
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3answers
70k views

What's the best way to keep my garage from freezing?

I live in Colorado. My 1950s house has a one-car attached garage that was built in the 2000s. The walls that are not shared with the house are not insulated: the studs and sheathing are visible from ...
10
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2answers
6k views

Mold remediation in crawlspace

Just bought a 25 year old home that has improperly installed insulation in the crawlspace. The insulation is fiberglass rolls with a paper backing, and is installed with the paper facing down, toward ...
9
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2answers
2k views

Should I insulate steam pipes in the basement?

I have a steam-radiator heating system. The furnace is in the (unfinished) basement, and the steam-carrying steel pipes spread out across the basement ceiling before going up into the rest of the ...
9
votes
4answers
46k views

Is super insulating exterior walls with rigid foam board insulation possible?

2" rigid foam-board insulation can have an R-value of up to R-10, layering 4 boards would create a R-40 value, right? However that creates an 8" foam wall above the actual wall. What would be a ...
9
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15answers
94k views

Is there a significant benefit to using plastic window insulation year round?

In order to help save more money and funnel more of those savings to debts, I'm looking for more ways to save money. I've heard that puting plastic window insulation over single-pane windows ...
8
votes
12answers
56k views

Can I install cellulose insulation without a blower machine?

I've purchased a few bags of loose fill cellulose insulation from the local hardware store (GreenFiber brand). How will the insulation work if I don't put it through the machine to fluff it and force ...
8
votes
4answers
68k views

Why is one bedroom always colder than the rest of the house?

We have a two story home with 3 bedrooms upstairs. Home is 7 years old. One of the bedrooms is always around 5-6 degrees Fahrenheit colder than the rest of the house (when compared to the thermostat ...
8
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3answers
4k views

How do I add insulation to my attic?

I'm pretty sure my attic needs some additional insulation (it looks pretty sparse and my house is freezing!). Here are some images of my attic: http://imgur.com/a/pdsXF Two questions: There is ...
8
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2answers
3k views

How can I floor my loft without compressing the insulation?

I want to board over my loft for storage, but before I do I ought to improve the insulation which is very old and thin. My UK house is 105yrs old so the rafters are not as high as the recommended ...
8
votes
3answers
7k views

How do I insulate a whole-house fan during the winter?

I would like to insulate my whole-house fan in the winter. I've see insulating covers that you can attach with magnetic strips or velcro, but the look does not appeal to me and I don't trust how well ...
8
votes
4answers
3k views

How to properly insulate bedroom

I live in an 80-100 year old house (not sure of exact age...my great grandfather built it, and it has been passed down for a few generations). He built it out of whatever was cheap at the time, so in ...
8
votes
4answers
48k views

Why did insulation and vapor barrier cause mold in my storage shed?

I recently installed insulation in my garden shed and covered it with a plastic vapor barrier. This was done in the summer when the weather was warm and sometime humid. Shortly after I'd finished ...
8
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5answers
3k views

How can I add insulation to my roof?

I have an old 1930's house, the upstairs of which is in the pitched roof space. I've just checked and it has no insulation what-so-ever up there, so it is very much the same temperature as a loft at ...
8
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2answers
32k views

Can I install recessed lighting in vaulted ceiling with 6" rafters?

I would like to install recessed lighting in my vaulted ceiling. One contractor I spoke with suggested not doing that because the rafters are shallow (only 6 inches), which does not leave much room ...
8
votes
3answers
9k views

What are the pros and cons of a vented vs unvented crawl space?

I find it very confusing to read and hear conflicting advice on crawl space: vent vs air seal, different ways to do insulation, vapor barriers vs not, etc. Mine currently has some moisture and has ...
8
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4answers
6k views

How should I insulate my basement?

My basement is CMU blocks and concrete floor. I had water issues, so I waterproofed it with an interior french drain, drainboard at the edge and a sump pump. This wouldn't take care of dampness so I ...
8
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1answer
7k views

How do I retrofit a junction box in an insulated wall?

Typical cold climate construction: Drywall, 6mil vapour barrier, fiberglass batt insulation. How do I retrofit a junction box and maintain the vapour seal? To be clear, by 'retrofit', I mean the ...
8
votes
2answers
28k views

How to properly insulate a garage?

I'm considering insulating (and drywalling) my garage, which already has insulated garage doors. My main goal is to keep it from getting much below freezing during the winter. This garage is located ...
8
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2answers
1k views

Venting the attic space during summer to cool the house

The air in my attic gets superheated during summer, from the sun baking the (clay? terracotta?) roof tiles (I live in Sydney, Australia). I have good ceiling insulation, and even put in some sarking ...
7
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7answers
27k views

Is insulating an unfinished basement worth it? If so, how should I go about it?

I have an unfinished, well waterproofed basement with cinderblock walls and a concrete floor. All but the top 6 inches / 15 cm or so is underground. Would it be worth insulating the walls down there? ...
7
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3answers
1k views

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. ...
7
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6answers
2k views

Freeze prevention in garage

My garage is below a heated room, and there are heating pipes running through the garage to heat that room. In the recent incredibly cold spell in New England, one of those pipes froze and burst. I ...
7
votes
3answers
29k views

Is styrofoam good for attic insulation?

A neighbour is trying to sell me some of his leftover styrofoam insulation. I need to insulate my attic. Is styrofoam a good insulator, or should I use another type of insulation?
7
votes
3answers
835 views

How do you insulate your pipes to protect against freezing?

So, my pipes froze in my house today, and it made me realize that I should better insulate them for the rare days that it gets in the teens here... What should I do to insulate them?
7
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2answers
10k views

Determining if there is insulation behind a wall

Learning today that some of our walls are a whole 20 degrees colder than others (all facing east) I'm convinced we may not have proper insulation (it's a new house, but we've head numerous problems ...
7
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5answers
11k views

How do I determine if I need attic insulation to keep cool in summer?

How can I determine if I need more attic insulation to keep cool in summer? I live in the desert of southern California so it can get pretty hot in the summer (110+ is not uncommon). I would like ...
7
votes
2answers
839 views

Why would you ever choose open-cell spray foam?

I've been researching spray foam for the attic in my Maryland house built in 1901. Currently it's a vented attic, and we've decided to spray foam the bottom of the roof deck, turning the attic into ...
7
votes
7answers
83k views

How can I seal the large gap around my fireplace in a way that is safe and prevents air inflows?

I've got a spot by a fireplace that lets cold air in. Unfortunately its right where the metal of the fireplace meets the wooden framing/molding of the fireplace on the inside. This seems like ...
7
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3answers
13k views

Should I insulate a finished basement if there is only 3 degrees difference?

We are finishing our basement and I'm wondering if it is worth putting in insulation if there is only a 3 degrees temperature difference from my upper floors to my basement. This is during the winter ...
7
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2answers
487 views

Basement Insulation

I am currently insulating my basement. I left the studs far enough away from the concrete wall so I can put r20 in without it compressing. My main question is there is enough space between the studs ...