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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2
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2answers
72 views

Box in knob and tube wiring between ceiling and cellulose?

I know that code says no cellulose insulation with knob and tube wiring because of possible heat build up. I also know that evidence of it causing fires because of this is scarce and a few states ...
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0answers
35 views

Is it possible to install soffits from inside of the attic?

Is it possible to install soffits on the inside? I requested a quote from someone to unblock or install more soffit vents and on the quote he wrote " more vents install by soffit". He made no ...
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1answer
53 views

Thermal Mass Puzzle I Can't Figure Out

I live in Los Angeles and have 2 units on my property. I use the front one as my office. I had the floors done years ago and thought I would get tile and have a subfloor of cement put in so that I ...
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6answers
16k 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 ...
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1answer
57 views

Looking for Second Opinion on New Insulation in Attic

I had someone come take a look at the attic yesterday to do an assessment. He uses the sprayable foam insulation and said that he would spray the ceiling of the attic rather than the floor (and remove ...
1
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0answers
44 views

How to insulate roof from heat (sunlight)

I'd like to insulate roof which is over my flat in 4 store building. MY flat is the last one and every summer is a killer for me as about for 1 month a year I have constant temperature of 30 Celsius. ...
3
votes
3answers
2k views

What type of insulation is needed for exterior walls on a brick house?

I have a government grant (2,440$) to insulate all of my exterior walls. The issue is, I cannot access them from the outside because I have a brick house. My first guess was that I will need to take ...
0
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1answer
23 views

What is the correct Air Flow change per hour for my house?

I recently just got my house air sealed. Before air sealed the Building Air Standard (BAS) was 1.4 now it is 1.2. Based off a 1300 sq ft house. What should the BAS be? Is there a calculator to ...
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0answers
24 views

Can I add rigid foam to the cold side of a kneewall?

I have kneewalls and attic floor/1st floor ceiling that are insulated with R13 and then have plywood covering. The floor has plastic against the 1st floor ceiling "warm side". I'm considering adding ...
0
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0answers
266 views

What should I do about the insulation in my basement?

So in my basement I have insulation that was put up by the builder. My first question is what is this type of insulation called? The second question I have pertains to finishing the basement. I ...
2
votes
2answers
118 views

cold damp corner with a dry sump

The corner of my living room (on split level) has drafts coming in via the bottom of the wall and a sump pump well (specifically, a plastic pipe that drains into it). The carpet is damp to the touch, ...
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1answer
56 views

Should I install a plastic vapor barrier below the insulation between my ceiling and attic floor?

I'm redoing the insulation in my attic the floor/ceiling cavity and then the ceiling of the attic. I have 2 rolls of plastic that is 15 ft by 150 ft just sitting around -- I've had it for years. Is it ...
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0answers
31 views

How to re-insulate between roof and top floor?

The space between my roof and the ceiling of my 2nd (top-most) floor is barely enough for me to crawl in. The roof tapers down to either end of the house from that, making the outer reaches ...
0
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2answers
9k views

Should I install a moisture barrier behind drywall in house with T1-11 siding?

My home interior walls are thick redwood paneling in the bay area mountains. i'm about to start removing the wood in my second bedroom and want to install a moisture barrier on the 1 outside wall of ...
4
votes
5answers
9k 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 ...
0
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2answers
63 views

Why is it so cold downstairs?

My house has a concrete slab foundation and the floor in the kitchen and living room is all tile. It is always freezing downstairs in the winter and I'm wondering if this is due to the floor or maybe ...
1
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2answers
253 views

Insulating near a breaker box

Hello: In remodeling my basement I have so far finished installing R-10 2" XPS insulation against my block walls. My question is: How close or how far away from the circuit breaker panel can I place ...
1
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1answer
36 views

How to fill an old window alcove?

In one of the bedrooms in my house (1930s), there is a sunken alcove where an old window used to be, the internal sill is still there. Whoever bricked up the window used bricks much thinner than the ...
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2answers
52 views

What to use when sealing floor-to-wall and window-to-wall?

During my infiltration (air leakage) test we found two other major places where air is leaking through into my home: the joints between the wood floors and the wall (wood) molding the joints ...
2
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1answer
58 views

Should I install a moisture barrier before installing engineered hardwood in a partial basement?

I am thinking about using a 6 mil poly and a thicker sound/water barrier to make walking on the floors a bit softer. I plan to tape (or use silicon) as a means to seal moisture. My question is, is it ...
7
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3answers
2k views

Solutions for a moist basement?

I live close to the water and there is a high water table around my house. Therefore a lot of water vapor passes through the basement walls. I would like to be able to store stuff in my basement and ...
2
votes
1answer
145 views

What do I use to fill in the crack between the wall and floor of my tiled bathrooms?

Yesterday I had an energy audit performed on my home which revealed sever leakage of air from the floors in both my bathrooms. The inspector told me to fill the cracks but was vague as to what would ...
2
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5answers
4k views

What to do with a cold corner?

I live in an apartment on the 4th floor. My bedroom has the misfortune of being in the very corner of the building - it has two outer walls. On top of that, the corner between these two walls is ...
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2answers
101 views

How can I fix a leaky door with new compression stripping?

I have two exterior doors that are leaking air, they shut fine and the weather stripping is the original installed when the house was built about 8 years ago (with the exception that I replaced ...
2
votes
1answer
49 views

How do you insulate exposed crawl space?

How do you insulate floor of cabin built on piers that has exposed crawl space and also keep the mice out? I want to insulate floor from underneath cabin. Cabin is in northeast U.S. and subjected to ...
9
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2answers
8k 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 ...
8
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4answers
11k 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 ...
4
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3answers
297 views

Easy way to temporarily insulate gap between hardwood floor and baseboard?

Odors are entering my apartment from a neighboring unit, and it appears to be getting in via a draft between the baseboard and hardwood floor in my apartment. The draft appears to be localized to a ...
3
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1answer
64 views

Wisconsin Basement Finishing questions

Last year I decided to let my brother-in-law finish my basement. After he finished the framing he moved away. Now I have wood framing complete and nothing else. He claimed he knew what he was ...
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2answers
57 views

after sealing the chimney, fireplace still not insulated

I found a way to use a large chimney balloon and pretty much block all downdraft. Sadly, the fireplace and hearth are still very cold, and it sucks heat out of the surrounding floor too. Perhaps the ...
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0answers
37 views

Can i replace the existing screed on concrete slab with floor insulation and electric underfloor heating?

Can i replace the existing screed on concrete slab with floor insulation and electric underfloor heating ? Standard screed thichness is something like 50 mm to 80 mm or so. My idea is to replace the ...
1
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4answers
300 views

Best way to air seal, vapor seal, and insulate exterior wall in old house?

I have a 90-year old house in Seattle. Exterior walls are constructed as follows: lath and plaster, uninsulated 2x4 stud bays, plank sheathing, cedar clapboard, 1" foil-faced styrofoam, vinyl siding. ...
1
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1answer
80 views

How do I apply foam board insulation behind a new recessed shelf in an exterior wall?

I want to make a recessed shelving in a exterior wall. When i took out the drywall, I found no insulation between the studs. Before I place the shelving parts, I want to put some insulation first ( I ...
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2answers
69 views

Does anyone have experience with insulating with waste-wool from shearing?

Does anyone have experience with insulating with waste wool from sheep-shearing. I am interested in washing and deodorizing techniques and also in the packing-density requirements. Plan is to use ...
0
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1answer
58 views

Insulating a stucco home

What is the best way to insulate a 1969 stucco home in the SF Bay Area? I have added a lot of insulation in the attic area but the rooms and walls are cold. Any suggestions? Steve
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0answers
22 views

Basement insulation under cantilever [duplicate]

I have a currently unfinished basement in a rather new home. There are a few places that have bay windows, or cantilevers that currently have only a bit of pink insulation thrown in fro the basement. ...
2
votes
1answer
64 views

Options for insulating a ceiling that is already finished (former 3 season room)

Is there a way to insulate a ceiling that is already finished and has no access point? More details below: Recently purchased a home in Eastern Massachusetts; one of the features was a room off the ...
3
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0answers
36 views

How can I stop my windows from leaking when mild winter weather occurs?

We have an 11 year old bungalow and this problem only occurs on the middle section of a bay window. We think that frost happens inside the insulation somewhere and when the temperature outside is mild ...
1
vote
1answer
42 views

how to insulate very wide fireplace?

I want to air-seal my fireplace. The damper is 44" wide, and it's about 4 feet off the floor, not easy to reach. The chimney tapers gradually for several feet after that, a couple inches narrower per ...
3
votes
3answers
84 views

Can I remove the framed wall on the outside of my basement?

I have a 20 year old house (which is a basic colonial box). The basement has a standard poured concrete exterior wall. Against the concrete exterior wall, they framed a standard wood 2 x 4 wall, ...
1
vote
1answer
51 views

Foam Insulation

I recently had to partially rip out the dry wall and insulation from an inside wall that joins to the garage. The outside wall had a styrofoam layer to it. My tape measure says it's 1 inch thick. ...
20
votes
5answers
32k 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 ...
3
votes
1answer
78 views

What is the proper way to insulate a cantilevered bay?

I have two areas of my house which are cantilevered. One is a bay area which extends about 2'. The other is the bottom of a fireplace box (gas fireplace). I have placed two layers of R-13 (I think) ...
7
votes
5answers
1k 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 ...
6
votes
3answers
4k 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 ...
0
votes
1answer
89 views

Can I use foil bubble insulation inside the house on exterior walls?

I am retired and on a very limited income and this house needs some insulation! The walls are cold in the interior (the walls that are not interior type walls but on the other side is the outside.). ...
1
vote
1answer
387 views

Should I install insulation between the rim joist and the top of foam insulation?

I am in the beginning phases of finishing my basement, newer house with poured cement foundation and engineered I-beam floor joists. No moisture issues in the basement. Rim joist currently has a batt ...
2
votes
0answers
49 views

What could cause moisture on my bonus room floor?

Last week during a cold snap with high winds. I discovered moisture along the floor on one side of my bonus room, above the attached garage. Their was enough moisture that the baseboard molding ...
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2answers
70 views

How do I find the proper wires for service drop?

I have 125 amp service, and bought two #1 AWG black-colored wires for the electrician to use in his replacement. I couldn't find a white wire that size, or bare copper. Neither at Lowes nor Home ...
10
votes
4answers
36k 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 ...