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 do I insulate around conduits and into difficult edges in my attic?

I am thinking about adding a little over a foot of insulation to my attics. I understand that there shouldn't be gaps between fiberglass batts (I read that this can reduce efficiency by 25%, whatever ...
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Would a memory foam topper be a sufficient sound and vibration baffle for Dance Dance Revolution? [closed]

For the past several months, my roommates and I have taken to enjoying varying builds of Dance Dance Revolution in the evenings, inclusive of X, MAX 2, and Supernova 2. I personally have gotten ...
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How do I know my current R-Value for my attic?

I am a first-time homeowner. One thing that was noted on the house inspection was that we needed more insulation for our attic. In my area, the recommended R-Value is 38 according to the ornl.gov ...
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184 views

How do I lower the temperature of an electric boiler in France/Europe?

My electric boiler is delivering VERY hot water: my hands are often burned when I forget to mix it with normal-tempered water. Do you think there is a way I can make the boiler heating the water ...
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What thickness of closed cell spray foam should I use on my basement walls?

I'm finishing my basement in southeastern Wisconsin. This is a poured full basement below grade. We are ready to insulate the walls and are going to use closed cell spray foam. I've had two ...
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246 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 ...
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Why am I getting condensation on the first floor joists of my new build?

We're building a new house in New Hampshire. We insulated the 1st floor joists with batting last winter so the minimal amount of heat we had in the basement to prevent the foundation from cracking ...
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Should I install external basement insulation that does not extend above ground?

Question : Is there a way to calculate energy savings for external, 2inch insulation on basement walls that does not extend above the soil surface, leaving the top couple feet of foundation wall ...
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How do I insulate my Laddomat 21 boiler charger?

I have a mixing device Laddomat 21 installed for my boiler + accumulator tank. I have all pipes around the boiler insulated with pre-formed moulded mineral wool insulation, but there is no insulation ...
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3k views

How do I install a vapor barrier and insulation in an existing floor?

I have a large room in my house that is built over a crawl space. The floor of this room does not have any insulation installed in it. I live in upstate New York so it is my understanding that I ...
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987 views

When insulating with closed-cell Spray Foam, what ERV and HVAC resizing considerations should I bear in mind?

I am building a 2800 sqft, two-story brick home in Austin, TX. I have heard many good things about the benefits of insulating with closed-cell Spray Polyurethane Foam (ccSPF)1, and have requested ...
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616 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 ...
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332 views

What height of insulation should I use between joists in an MDF floor?

Background I am starting my first serious DIY project - converting our garage into a playroom for the kids. The garage floor is concrete. My plan is to run timber (Sawn Kiln Dried Timber (L)3000 x ...
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How to plan for the future when installing a new roof?

We're hiring a contractor to take off the existing roof, repair/replace any rotted sheathing and rafters, and install a new roof. We've also asked that they add a new plumbing vent stack for a new ...
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Should I think about insulating a cheap conservatory? if so how do I do it?

I made an offer on a house today that had a cheap upvc conservitory on the back on the house. The conservatory had a cheap plastic sloping roof on that leaked a little, the walls are very thin, and ...
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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 ...
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AC issues / Insulation of vaulted ceiling

Issue: If it's hot outside, ~90F, house temperature can't get below 79F. Background: 6 year old house, vaulted ceiling with 1 ceiling fan in family room where thermostat is (also 3 large windows, ...
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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 ...
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558 views

Installation of Polystyrene External Wall Insulation - over old render?

I am considering installing a Polystyrene-block based External Wall Insulation system. Currently the house is blockwork with a rough render. One contractor has told be that the existing render on ...
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Easiest/Cheapest way to improve insulation of a room

I have a home office, which has 2.5 walls that border the outside of the house, and a floor that is over the garage. It's a nasty combination. It gets quite hot during the part of the day where the ...
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567 views

When should I open a skylight vent?

I have a one-floor (plus basement) house with a large skylight in the living room. It has an openable vent. When is it proper to open the vent? Should I open it in midsummer with the AC on, on ...
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458 views

How to cover gap below garage back door

I have a 3/4" gap between my garage back door (see image. blueish color is outside evening light). Looking for a good way to cover this gap with two goals in mind: Stop rodents from coming in Help ...
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What to do with this exterior insulation?

We have these sheets of pink insulation with a light coat of concrete-paint-like stuff (?) wrapped all the way around the base of the house, and as can be seen, it is degrading in both appearance and ...
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394 views

insulating exterior walls

I have an old house with no insulation. The walls are 2x4 with plaster and lath. The outside is aluminum siding, in good shape. I would like to blow cellulose insulation inside the wall cavities from ...
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how to achieve a reduction of noise of -60 dB in as little thickness as possible of insulation material?

I am looking into materials to acoustically insulate a room, and I need to do it in as little thickness of the material as possible. I found something called Balterio which is a 3 mm thick stuff sold ...
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Reducing Attic Fire Risk

When I had my house built, it got cold and so we called the local power co-op energy savings expert to give us advice. One of the things he said was that we had the wrong kind of insulation in the ...
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434 views

How do I deciding whether to install an attic venting system?

I live in Colorado, and the weather is starting to warm up. In a couple months, the temperatures will rise pretty high. Thankfully, I have a well insulated house (there is over 20 inches of fiberglass ...
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My kitchen has no real walls. Is this going to be a problem?

I recently redid my kitchen, which included removing the back splash and putting in new tile, but when I went to remove the old tile, I found that the tile is only attached to drywall. Knowing this ...
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How do I avoid condensation issues with an insulated garage roof?

Yesterday it was raining (slight overexaggeration of course) :-) inside my garage... Hood of the car was covered with nasty orange water spots. It's an attached garage. There's no garage "ceiling" ...
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Adding Insulation to Exterior Walls

I am looking at purchasing an older home that is brick on concrete blocks on plaster (from the outside in). I recently heard from someone else in the neighborhood that those homes were not ...
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Insulation in the attic

I have moisture and a moldy smell in my attic. I had someone come out and open up the eaves and soffets more. It did seem to help but I still have some smell and some moisture. I have insulation on ...
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How do I determine what supplies to buy to insulate an attic?

I would like to add more insulation to an attic. What measurements and points do I need to look at to decide what materials to buy? How do I determine if I need airflow baffles? How do I determine ...
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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 ...
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278 views

Glue crawl space rigid insulation

I've dug a trench around the perimeter of my crawl space. Then I planned the next steps. I took a week off but I'd like to finish this project next weekend. I am going to glue 2" R-10 FOAMULAR 250 ...
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Should I use foam spray insulation in my crawl space?

My crawl space has no insulation. The dirt is wet near one of the walls. There have been termites in the past. I'm thinking of insulating the ceiling (between the joists) and the walls with foam ...
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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 ...
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Extra insulation for panes of aging windows

The original windows on my 30-year-old house are insulated pretty well around the frames, but the panes themselves transmit a lot of cold air, especially when things drop down into the single digits, ...
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Is this insulation supposed to be there?

I was adding some insulation foam into our fireplace as a way of stopping drafts from the chimney. It's obvious that it's installed so we won't ever have it there when a fire is lit (we have not yet ...
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How do I fix incorrect attic insulation?

I have loose fill attic insulation. It seems to have been moved around and become compact. Is it just as easy as getting in there with a broom and 'fluffing' it up and moving it around, or do I need ...
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How can I seal around a light fixture/light switch outlet?

I Have a house built in 1972. I'm currently 80% finished in installing a ceiling fan into my master bedroom. I had an energy audit about a month ago, which revealed that I had "pretty good sealing" ...
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What happens when a vapor barrier is too close to the cold side?

The vapour barrier must be installed on the warm side of the wall, that is on this interior side of the house. It is permissible to have it sandwiched in the middle between two layers of insulation, ...
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How do I prevent window drafts?

I live in Florida. I have noticed that in the Winter it seems that the cold air leaks through the windows and into the rooms. This, of course, raises my energy bill for heating (yes we have to turn on ...
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Is a vapor barrier necessary beneath blown in cellulose insulation in a garage ceiling in a cold climate?

Is it necessary to put any kind of vapor barrier beneath blown in cellulose insulation in an attached garage? The ceiling is sheetrocked, but that's it. It's a cold, dry climate (north half of ...
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Additional Vapor Barrier with Faced Insulation?

When installing faced insulation into exterior walls, are there any benefits or detriments to adding an additional vapor barrier to either the non-faced side of the insulation?