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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How can I insulate my fireplace when it's not in use?

I have a wood burning fireplace insert, that is not currently being used. Now that it's cold in my area (27F), I've noticed that there is quite a draft coming from the fireplace. How can I ...
8
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3answers
7k 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 ...
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2answers
73 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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0answers
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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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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3answers
109 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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2answers
1k views

IKEA recessed lights: extreme clearance requirements?

I'm finishing the ceiling on my basement. I'm planning to insulate the ceiling with the Roxul Safe'n'Sound Fire & Soundproofing Insulation. It is 3 inches thick so it only occupies the upper 3 ...
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2answers
624 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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1answer
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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3answers
217 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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3answers
105 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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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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6answers
7k 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 ...
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1answer
67 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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1answer
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
107 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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0answers
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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1answer
107 views

What's the best way to insulate an outdoor sauna?

I am designing a 4'x4' sauna. Most information online is for indoor saunas. From what I've gleaned, the layers should be (for example): Outside ––> cedar exterior ––> tyvex ––> strand board --> 2x4 ...
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2answers
263 views

How useful is double-glazed glass for sound and heat insulation in a semi-tropical climate?

I'm located in Bombay/Mumbai, and I've been trying to figure out what windows I should install for soundproofing and heat insulation. I was talking to someone who does consultation for uPVC windows. ...
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0answers
58 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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0answers
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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0answers
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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0answers
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
352 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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1answer
39 views

insulation below fireplace

I was removing wood paneling in the basement to fix some seepage cracks and I noticed a huge space that was un-insulated. This spot had some pipes running through it and it runs right underneath the ...
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3answers
64 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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5answers
313 views

How can I insulate my basement on a budget?

I have a home built in 1925, a "Chicago Bungalow" style, in Louisville, KY. I have roughed in the basement, trying to take advantage of every square inch. I am planning on using it for short-term ...
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3answers
441 views

Can I add rolls of unfaced insulation to increase the R value of my attic insulation?

I live in a two story home that is approximately 150 years old. The attic floor is constructed with large beams and old wood planks laid across the complete surface area, rendering the attic useful ...
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4answers
2k views

How can I measure the r-value of a wall?

What is a reproducible test to measure the r-value of an exterior wall? Or even a specific spot on a specific wall? It needn't produce an absolutely certain result, but a good estimate with known ...
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1answer
1k views

How can I soundproof my bedroom walls as cost effectively as possible?

My bedroom is next to the kitchen on one wall, a hallway on one wall, the outdoors on one wall and the PC room on the other. The wall that bothers us the most is the kitchen wall. We would like to ...
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2answers
676 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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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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5answers
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Should I encapsulate my crawl space?

Our home was built with a dirt crawl space that is about 2' from ground to bottom of floor joist. The floors are insulated with fiberglass held up (where it hasn't fallen down) with wire rods. The ...
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3answers
13k 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 ...
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4answers
807 views

What is the best way to seal this old fireplace vent?

I am doing some minor renovations to my basement with the drop ceiling and found that one of the geniuses that owned the house before me, used fibreglass ceiling tiles to seal off an old vent for a ...
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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
100 views

Looking to improve acoustic and thermal performance before relaying wooden floor

We are about to lay new wood floor in the entire upstairs of an old Victorian house. This seems like the perfect opportunity to acoustically (and thermally) insulate the floor to separate it from ...
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2answers
7k 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 ...
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1answer
110 views

Will adding blown-in insulation to my floor cause a moisture problem?

I have a bedroom above my garage. The builder insulated the floor with R13 kraft faced insulation, leaving an un-insulated space in the floor. I was thinking of blowing insulation in the empty space ...
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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 ...
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1answer
384 views

Do I need vapor barrier to insulate a cinder block garage?

Similar to How to properly insulate a garage? and Do I need a vapor barrier between the insulation and finish wall in a new garage? both of which do not have answers pertitent to my one particular ...
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0answers
49 views

How should I insulate a 12x24 metal shed?

I am having a 12X24 metal shed delivered today. Wood floor of course with studs to the ceiling. Am adding an air conditioner to use when in this work shop for furniture making. Was wondering how to ...
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1answer
81 views

How can I add insulation above my finished ceiling?

What is the cheapest option for adding insulation above a finished ceiling? There has never been any in the spot that I need it. Should I take the roof off or have it sprayed in? The space is 20 feet ...
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1answer
61 views

Properly insulating crawl space

Currently my crawl space has no insulation. The previous owner put gravel on the ground. I was told by my home inspector that I would save some money on energy costs. However, I'm not sure what's ...
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0answers
28 views

Fiberglass insulation in basement

How effective is fiberglass insulation for interior wall separating basement living area from furnace room?
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2answers
2k views

Can I insulate my soffit vents in the garage for the winter?

So I recently had a new 30x24 detached garage built and intend to leave it mostly unfinished. I live in Iowa and we have pretty cold winters here, which will be coming soon, and I'm looking for a ...
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4answers
3k 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 ...
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1answer
42 views

soundprofing edm studio room [duplicate]

if i hang mass loaded vinyl like curtains around the room,will it soundproof the room do other neighbours will not complain when im doing music in strange hours? what other options do i have for a ...
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2answers
818 views

Should I staple faced insulation batts to the face of the stud or the side?

I'm preparing to drywall my attached garage and have run into conflicting opinions on if I should staple the insulation flanges to the sides of the stud or the face. I live in the San Francisco bay ...
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2answers
175 views

How do I improve the insulation in a vaulted ceiling?

I live in a twenty year old Florida condo quadplex. The upstairs ceilings are two by four trusses of a mansard roof. I have replaced the ac, wall insulation, ducts. An IR thermometer shows huge heat ...