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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Noise insulation on a door that connects bedroom and bathroom

our bathroom has 2 doors and we only use one. The other one remains shut and it connects to a bedroom. We do not intend on ever opening it (but we are renting the place so we need something that ...
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44 views

Water heater on concrete--should I build a platform? how much heat loss in winter?

I don't know if that title the best way to phrase the question. It's winter(ish) now, and I swear the hot water just doesn't last as long as it does in, say, September. The water heater tank is ...
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118 views

was in attic for an hour without mask. could this cause issue?

my bathroom fan was dropping water so i went up to the attic and applied fiberglass insulation to the bare metal vent pipt from the fan out to the roof. i was up in the attic for an hour wearing ...
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30 views

Draft from under baseboard - pull back carpet or remove baseboard to caulk?

Using an infrared thermometer/camera, I found what seems to be a draft coming from beneath a baseboard in the corner of a carpeted room. I understand that caulking can stop drafts from under ...
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3answers
50 views

Device to detect where heat or cold air is escaping or entering a structure

I would like to lower my environmental impact and reduce my energy bills by reducing areas where air might be entering or exiting my home. What type of device can be used to detect where heat or cool ...
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2answers
101 views

Can I insulate my exterior walls myself using blow-in?

I live in western Washington, where we see plenty of rain, but only a month or two of freezing temperatures each year. My exterior walls are drywall with horizontal wood siding. I feel crazy as I ...
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41 views

sliding door leaking air, is it installed correctly?

I have 2 very newly installed ( < 1yr) jeldwen sliding patio doors (aluminum clad) , and I found that they are leaking air on inside around the bottom and side edges of trim. I am wondering ...
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51 views

rigid foam board in basement with exterior guard overkill?

I'm finishing a basement and have 8 foot and half concrete walls that I will be placing a stud wall in front of. I've scoured the net only to find a large number of opinions. My basement wall has an ...
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2answers
44 views

Rim Joist Insulation without a Sill Plate

I've seen a few similar questions but the answers don't add up... I would like to use some rigid foam insulation to insulate my rim joists. Here is the problem: everything I have seen shows putting ...
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1answer
54 views

how do i improve the temperature of my sons room?

i have a house in new york and i have insulation with paper backing in the attic. My room which has the thermostat is always 4 degrees warmer than his room which is situated over the living room can i ...
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3answers
47 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. ...
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18 views

Fragile paperback on cellar ceiling batts

Installed in 1968, these insulation batts now fall, or hang. The paperback has become so fragile the insulating weight pulls it apart. What suggestions for a remedy? Replace? Or?
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49 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 ...
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42 views

Can rigid foam board have an air space between it and rim joist?

I am insulating my rim joists with 2" rigid foam board. Most of the rim joist is bare, and the foam fits along it nicely. Some sill boxes have some small irregularities (vent pipes, plumbing, etc) ...
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53 views

which layer of rigid foam should i caulk when insulating rim joist?

I am insulating my rim joists with rigid foam board in a manner similar to that described on the familyhandyman's website. I am considering adding a second layer of foam board to get closer to the ...
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1answer
46 views

Strip on side of window letting cold air in

My apartment bedroom window has a thin vertical strip along the right side that allows warm air from the room to escape. Even with the bedroom thermostat set to 80 degrees, the room hasn't gone above ...
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37 views

How can I stop an in-the-wall air conditioner from leaking air into the home?

As far as I can tell, the air conditioner fits nearly perfectly in the hole, but there is considerable air leaking into the home through the bottom. I think it may be because of metal strips that line ...
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1answer
32 views

How do I dry up a stucco wall that presents efflorescence?

I have determined the source of the water and I would like to believe that I stopped that with a temporary fix (a large tarp that will cover my patio which used to collect water at the base of the ...
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1answer
47 views

Is sealing via tape necessary for knee wall foam board insulation.?

I have dramatically improved the ventilation and insulation situation in my house's knee wall attic space, but I have one concern. I nailed up foam board over the studs and fiberglass batts. Do the ...
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1answer
130 views

How do I insulate my garage ceiling?

My garage gets really cold in the winter and I'd like to insulate my ceiling and/or roof. Here is my ceiling I store quite a bit of things in the ceiling, so the idea is to insulate the inside of ...
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30 views

how to fix the dry wall inside of the outer wall ? and what is brown glossy paper in between drywall and insulation? ?

I just found a mold in the bottom corner of my house inside of outer wall. I cleaned mold with bleach and cut the corner. is there any specific way to fix the dry wall of outer wall. Also plz what ...
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1answer
31 views

What type of insulation can be used near knob and tube wiring?

I have a house build in the 1920's. I recently had a HVAC system installed, and i have to insulate my actic (Unfinished). The three bedrooms and one bath on the floor below have a center ceiling ...
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1answer
89 views

How can I close off crawl space vents for the winter?

My exterior air vents are still letting air into the crawl space, even after being closed for the winter. I've seen the suggestions for wedging plywood over the air vents to further block the air, but ...
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2answers
70 views

Should I install the exhaust hood outlet through the chimney or house wall?

What are the advantages and disadvantages of implementing an outlet of a kitchen exhaust hood through a chimney or directly through the outer wall of the house? There are unused chimneys in the house ...
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1answer
29 views

How do we properly insulate a loft ceiling with 2“ by 4” without loosing space?

We have recently started a home improvement project that involved completely redoing all of our vaulted ceilings. We have a loft area that was about 6 foot in height at the peak. When we did the demo ...
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38 views

How can I insulate an already converted attic space?

A couple of years ago we had our attic converted to a spare bedroom, It became obvious after the first winter that there was a problem, after inspection it was confirmed that there is no insulation ...
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101 views

Can I install insulation over the HVAC duct work and plywood?

Currently there is R19 faced insulation installed between the floor joists. I am adding R30 unfaced perpendicular to the currently installed R19. I have two questions: 1) There is an HVAC unit in ...
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137 views

Installing cardboard deflectors (baffles) in attic

Goal I need to install 75 cardboard deflectors (baffles) in my attic. I need to do this so that the cellulose does not go into my soffits. Current Setup I brought myself up three sheets of 2x10 ...
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3answers
108 views

Do I have to worry about condensation on plywood over rigid foam insulation in the attic?

I have a vented attic space with poor insulation in the attic floor and rafters, so I'm going to button it up. My energy auditor suggested I insulate the floor as follows: cut blocks of rigid foam ...
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56 views

Can I use a 5 mil blue tarp as a moisture barrier over a dirt floor in a crawl space instead of poly sheeting?

Can I use a 5 mil blue tarp as a moisture barrier over a dirt floor in a crawl space instead of poly sheeting?
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2answers
607 views

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

I had a home built last year and we have one bedroom that is 6-10 degrees colder than the rest of the rooms in the house when its cold outside. The heat is radiant and the system has temperature ...
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3answers
104 views

Most bang for buck approach to insulating home

My home is a bit over 100 years old, wood frame aluminum siding house, that was not very well kept up by the previous (30+ year) owner. We've lived in it for two years, and are looking to improve the ...
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214 views

Should I wrap home in Tyvek when re-siding?

My house was built in the 60s and doesn't have normal plywood sheathing. It has that old sheet-rock-like sheathing (it's black, I think it is exterior gypsum). Basically the walls (right now) go, ...
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2answers
43 views

How can I fill a gap beneath windows?

Outside my house, there is a gap visible below some of my windows. I have attached pictures to make it clear, since I don't know the terminology. The gap is about the width of my thumb. I can see the ...
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106 views

Will foam-filling this gap create problems?

I'm trying to find out if I can spray-foam fill a gap in my ceiling. I have an almost-flat rubber roof, 1" foam, wood planks, then a gap created by 2x6s, then the sheetrock ceiling. I'm in PA, climate ...
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1answer
82 views

What insulation should I use in my attached garage?

I'm currently tearing out the sheetrock and everything in my attached garage to do general repairs to other things. I quickly found that there wasn't a single bit of insulation (which explains a lot ...
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241 views

Why do basement walls need less insulation than crawlspace walls?

I used this DoE calculator: http://web.ornl.gov/sci/roofs+walls/insulation/ins_16.html For Washington, DC, it recommended R25 for crawlspace walls and R11 for basement walls. Why would they be ...
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1answer
64 views

Can I use 1“ XPS and fiberglass batts instead of 2” XPS insulation in my basement?

I have read multiple sources on the internet suggesting use of 2" XPS foam boards to insulate basement foundation and then building a 2x4 wall in front of it. 2" foam board is very expensive when ...
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105 views

How can I insulate a room without tearing down walls?

The kitchen in my Philadelphia rowhome seems to have been....a last minute idea. From last winter, I'm almost certain there is no insulation involved in the room. Is there a way for me to do something ...
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24 views

basement wall insulation

just bought a house the basement is below grade and the walls are all most finished needing one more sheet of drywall all the way around. im worried about the way they finished the insulation they put ...
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57 views

Should I add an air return in my basement and seal old vents?

My question is basically a variation of two prior questions: "How do I close and seal an old external vent" and "Should I add an air return in a finished basement." My house has a bottom level that ...
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77 views

How should I seal and insulate a crawlspace to mitigate radon and allow for storage in the space?

Background: I recently bought a house built in 1996. It has a 1480sq ft (approx) living area, which is the same as the crawl space size. The location is in the Kansas City metro area. The yard is ...
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52 views

How do I attach windows to a block wall covered with rigid foam insulation?

I'm wrapping a block wall house with rigid foam insulation. I plan on liquid nailing it directly to the exterior block wall of the house. I plan on attaching furring strips with tapcons on top of the ...
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83 views

What are my options for my chimney? (Ventless fireplace, insulation)

When we moved into our house it had an original chimney (now about 40 years old) but the original owners had converted the once-wood-burning brick fireplace into a ventless gas insert. I immediately ...
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2answers
346 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 ...
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3answers
63 views

How should I insulate the ceiling between floors in a ski cabin?

I have a small ski cabin in upstate New York (cold climate) that we only visit on weekends. It is heated by a wood stove. During winter we had many problems with bursting water pipes so they are now ...
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2answers
131 views

Is it difficult to work around cellulose installation?

I am a new house owner since July of 2014. I bought a 50 year old house with good bones and a great opportunity to flip it. My attic has a pathetic R5 insulation at the moment. Being a young home ...
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2answers
675 views

Is it safe to run the oven without insulation around it?

My oven had mice in it and made a nest. So I took all the insulation out of it too look for the mouse. This was because it smelled like a dead animal every time I turned on the oven so I cleaned it ...
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1answer
51 views

Where to attach a storm window?

We have two very leaky, single pane windows that we need to insulate. Because interior shrinkwrap storms are impractical for several reasons, we're looking at exterior storms instead. Home Depot has ...
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2answers
26 views

Do we need to replace wet insulation resulting from a a/c drain

Licensed air conditioning company replaced a part in our air conditioning unit in our attic and while doing so left a drain hose open and leaking water that we did not know about until it dripped ...