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.

learn more… | top users | synonyms

0
votes
1answer
36 views

Old cellulose insulation holding heat during summer

We have a house in Seattle that is 60 years old with 6-8" of blown in cellulose insulation in the attic with an inch of rock wool under that. There is basic ventilation in the attic. The trouble we ...
0
votes
3answers
419 views

How to apply wallpaper over styrofoam?

I live in an attic, and the head part of my bed is in a corner where the roof slope, an outer wall and the wall to the neighbour's unheated attic meet. After a few winters of waking up to the feeling ...
0
votes
3answers
443 views

How do I insulate exterior basement wall?

Working from scratch with a bare wall. What do I do? 3 hardware stores have told me 3 different things. We have very cold winters here. Looking for cheapest and highest R value. contractor next door ...
0
votes
1answer
759 views

Should I block or insulate my air vents for the winter?

I live in a house which consists of a 17 year old extension on a 40 something year old cottage. The two main bedrooms are the only rooms in the house with air vents. They are also two of the coldest ...
0
votes
4answers
622 views

Can I paint over XPS insulation?

I've a top floor apartment in India which gets almost like an oven during the summers which is like for 9 months out of 12. I've decided to apply under the deck XPS 50mm (nailed to the ceiling). I ...
0
votes
1answer
191 views

What is the best removable insulation material?

There is a crack in a wall that I would like to fill with some removable insulation. It must be removable, as such it should just be a temporary solution. I know of rockwool and glasswool, but don't ...
0
votes
2answers
6k 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 ...
0
votes
1answer
52 views

Insulate garage ceiling

I want to insulate the ceiling of my garage, to make the family room above it warmer. The problem is that the garage has a finished ceiling (no exposed beams), so how to I affix the insulation to the ...
0
votes
1answer
65 views

Help translate terminology relating to flat roof construction

I just bought a house which had an extension done 12 years ago. I am about to do some work in this area and want to understand what has been done before. Below is a screen shot of the bits of the ...
0
votes
1answer
68 views

Should I remove, or work around dividing basement walls?

The basement of my house is bare concrete floor with bare concrete block walls. I'm in Canada and would like to (and should) insulate these walls, at least the above-grade portion, which is about ...
0
votes
2answers
81 views

Crawl Space Encapsulation Question

I live in Georgia (around the Atlanta area) and recently discovered mold in the crawl space of my home (I plan to have the mold professionally removed). My crawl space is about 30' by 15' (4' to 15' ...
0
votes
2answers
124 views

Can I sweep blown insulation to one side and replace with fiberglass batts?

I noticed my attic blown in insulation is rather thin on one side. Rather than buying enough to cover the whole area, I was thinking of just pushing or brooming the blown in insulation toward the ...
0
votes
2answers
670 views

Should I have cavity wall insulation installed?

I have the option to get cavity wall insulation done for free in my home, but i'm not sure if its a good idea or not. I've heard people say it can cause issues with damp, its hard to get out if ...
0
votes
1answer
48 views

How would you repair this exterior foundation insulation/wrap?

A home I purchased, which was built in 2005 located in the upper Minnesota/US (frigid winters, balmy summers) has the larger faces of the above-grade poured foundation covered in a strange insulation ...
0
votes
1answer
50 views

Proper order of operations for re-doing windows, stucco, and footing insulation

I have three big projects coming up: Replacing all the windows and a sliding glass door Adding 2 inches of rigid foam insulation to the exterior and re-stucco-ing Adding rigid foam insulation ...
0
votes
1answer
25 views

Worth it to add footing insulation if there's already a thermal break?

I've been considering insulating the outside perimeter footings of my 1972 ranch house in northern New Mexico. The slab-on-grade it's built on (that constitutes the subfloor) reaches a temperature ...
0
votes
1answer
41 views

Is insulation blockinng airflow of my vented soffit?

I have insulation shoved in front of my vented soffit's should the insulation Be there It was already there when we moved I didn't think much of an till I started doing some research after I blew in ...
0
votes
1answer
77 views

Turning a mobile home with a basement into a recording studio

I recently moved into a mobile home that has a basement. The basement was an apartment, but had multiple issues with mold and frozen/broken water pipes. The owner was prepared to demolish the entire ...
0
votes
1answer
41 views

should i remove trim before caulking window

For weatherization purposes, is it worth removing the trim around windows (and sliding doors, etc) and filling the gaps behind the trim with spray foam (or perhaps caulk?), or is it acceptable simply ...
0
votes
2answers
101 views

Insulating attic with no soffit vents.

I just bought a house in northern Midwest where there's lots of snow and was planning on adding blown in cellulose insulation to attic space. Then I noticed that there are no soffit vents in the main ...
0
votes
2answers
101 views

Insulation to condition attic space

I have a two story 1916 foursquare home in Ohio with spacious attic and basement. Before I purchased it, the HVAC system was redone by installing two independent furnaces/blowers (one in the attic and ...
0
votes
4answers
83 views

What could cause a temperature variance between our kitchen and the rest of the house?

Our newly remodeled kitchen holds a temperature that averages about 5 degrees cooler than the remainder of the house. The house thermostat is set at 70 degrees, and the kitchen has been as low as 63. ...
0
votes
1answer
108 views

Legal requirements regarding 100% asbestos duct work [closed]

I am renting a condo. After starting the heater, dusty air came out of the registers, so I called out a company to clean the ducts. They verified the ducts are 100% asbestos and cannot be cleaned. ...
0
votes
1answer
82 views

Can I insulate under my condo's subfloor?

My condo does not have a basement. I have a subfloor with three dummy registers. I don't know why they are there. My heating ducts are in the upper part of the side walls. In the winter the cold ...
0
votes
1answer
472 views

Will sealing off rafter spaces and unusable spaces help my attic insulation plan?

I am trying to warm an exercise floor in an unfinished attic and save on heating at the same time. I want to evaluate whether covering the rafters in my attic with various materials will be worthwhile ...
0
votes
1answer
382 views

Is blown-in insulation appropriate for on the foundation block in a crawlspace?

Our home has blown-in insulation on the foundation block in the crawlspace. I've never seen this before. The other homes in the area I've seen had foam board glued to the wall. There doesn't appear ...
0
votes
0answers
22 views

What is the minimum thickness of an insulated bathroom wall

I am trying to build a basement bathroom in the corner of the house. Where I am, basement insulation codes are R10/13. What is the minimum that I can do to frame and insulate a wall. The two ...
0
votes
0answers
19 views

Bathroom remodel - Insulation/vapor barrier behind tub surround question

I am renovating my bath and my tub surround says it should be fastened to the studs. With this in mind my 1923 building has serious insulation problems and I would like to add R value as well as some ...
0
votes
1answer
18 views

HVAC Tape Recommendations

I've replaced the insulation on an outside heat pump duct that animals pulled off but have not been able to find HVAC tape that will last more than a couple of months. Tried stapling but don't have ...
0
votes
1answer
20 views

Adding ventilation and insulation with limited soffits

I’m hoping to add some insulation and ventilation to our attic. It’s a 1954 with a 1991 addition. The second floor is warmer in the summer, the original part much warmer than the addition. Current ...
0
votes
0answers
54 views

How to insulate this portion of split AC Pipe?

I bought a new Hitachi split AC lately which isn't cooling as much I was expecting. I checked for leaks/bad installation and found this. (This is connection point of external pipe and pipe which ...
0
votes
0answers
47 views

Insulation of Basement Block Wall and Framing

In finishing part of my basement, we've gone ahead and installed 3/4" rigid insulation (R-3.8 IIRC), and then 2x4 framing against the rigid insulation. Then, the small gaps with between the 2x4 ...
0
votes
0answers
40 views

Can I run heat tape on my water pipe behind drywall without hardwiring?

In removing the ceiling tiles in renovating our basement, it came to my attention that the first 5 feet or so on water supply line has heat tape on it. While we've had no problems with it freezing ...
0
votes
2answers
51 views

How do I insulate a strip foundation from below?

While building a strip foundation (a concrete wall starting several feet below ground) I have to insulate it from moisture because otherwise moisture will get into the foundation and into the ...
0
votes
0answers
53 views

Is it safe to fill in or insulate the space in my walls around my fireplace flum?

Moved into a new home and I noticed something about my fireplace. I have a large brick enclosure that surrounds my wood burning fireplace and when I was up in the attic I noticed that the space ...
0
votes
0answers
30 views

Minimum covering of brick wall for insulation purposes

There is a brick wall in our condo that is part of the exterior building that was never meant to be used as an interior wall. We were hoping to insulate it and we saw recommendations for using XPS ...
0
votes
0answers
54 views

How can I prevent my garage soffit vents from pulling in sewer vent smells?

My garage has a ceiling with fiberglass insulation over plastic air spacers leading to vents under the roof shingles. There is no plywood or drywall over the insulation. The walls are insulated and ...
0
votes
2answers
557 views

Removable windows for the porch or sunroom

I have a potential project where there is a metal roof/awning/overhang supported by posts on the south side of the house. It is sort of like a car port, except there is no vehicular access to it ...
0
votes
0answers
121 views

What thickness Styrofoam should be used to insulate a toilet tank?

So, based on my question here, I like the idea of insulating the inside of the toilet using Styrofoam because it seems more interesting/fun than installing a mixing valve. I plan to use silicone caulk ...
0
votes
0answers
32 views

Can my gas oven safely be used with damaged insulation?

I have a Caloric RSP665-04 stove oven - gas - and the insulation around the oven has been damaged by vermin. The vermin are gone. Can the oven be used safely with damaged insulation?
0
votes
0answers
68 views

Can a false ceiling improve insulation?

My new house has a very small kitchen which is actually an extension of the house with its own roof. I suspect its roof insulation is old and not effective, because this kitchen is quite cold (12 ...
0
votes
2answers
789 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 ...
0
votes
0answers
138 views

Is it possible to insulate existing ducts without removing drywall?

My second story is always warmer in the summer and cooler in the winter than the ground floor. I've had the ducts cleaned and sealed and I've also adjusted the blower motor speed. It occurs to me that ...
0
votes
0answers
195 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 ...
0
votes
0answers
187 views

Do I need a vapor barrier between the insulation and finish wall in a new garage?

Can I put plastic between the insulation and finish wall in a new garage? Or would we gain anything by doing this? We have some who told us to do this and others who say definitely do not. There is ...
0
votes
0answers
114 views

Can i replace the insulation in my stove/oven with any kind?

I need to replace the insulation in our oven/stove. Do i have to buy specific insulation?
0
votes
0answers
46 views

What factors should I consider when choosing insulation for a vaulted ceiling?

What factors should I consider for insulating a Florida room addition with a vaulted ceiling. I'm planning on finishing the ceiling with drywall.
0
votes
0answers
417 views

How can I insulate brick exterior walls in a 100 year old house with wood beams in brick pocket floor supports

My sister has a 100 year old or older home over a wet and damp crawl space on an island which has high tide and rain water flooding of streets an crawl spaces. A sump pump runs all the time. The home ...
0
votes
1answer
293 views

How can I insulate an area without an attic above it?

My laundry room and a walk-in closet are freezing cold. They're on the ground floor in part of the house that is single-story. So, there is no attic above them. How do I insulate these areas when ...