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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What can fiberglass insulation NOT touch?

I have some rolls of 15" R-13 insulation that I am planning on installing in my floor joists to help sound proof my basement ceiling. Is there anything that the insulation can't touch? I know that the ...
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47 views

Does the thickness of insulation on the cooling pipe of an air contioner make a difference to preventing mould and condensation

We have an apartment in Port Hedland WA.( Extreme humidity and heat) It's relatively new( 3 years old) but there was mold all over the ceiling and along the walls following the air con pipes to ...
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68 views

Water coming from the cistern is not capable of flushing the commode?

Its been months now that our water pressure is not enough to fully flush the commode, every time it must be filled manually or wait until it fills for the second time for a complete flush out.
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75 views

Best way(s) to soundproof interior wall between rooms?

I had a few ideas in mind to keep our newborn from waking up our light sleeping toddler sleeping in the adjacent room. I'm open to new suggestions. :-) 1) Blow cellulose from above (unfinished area)....
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60 views

Mold and an insulated shed roof

Thanks in advance for any answers. I have just had a shed installed which is built onto the side of our house. It has a metal roof, with OSB board under it (there are wooden noggins to support it). ...
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105 views

Redoing my roof: how should I redo my insulation?

I live in Denver. My 60 year old house is 1.5 stories. The upstairs has a highly sloped roof and definitely has insulation in the relatively narrow attic and I believe has insulation at the angled ...
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65 views

How can I insulate a finished 1 1/2 story space

I have a 1 1/2 story portion on my house that has a finished office space and closet on one side. The room has no insulation as I've done a little work and had to take some drywall off the outer wall ...
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1answer
34 views

How to use thinner insulation than the steel studs?

Here in Brazil I can only find insulation that is about 35-40 mm thick. I intend to use it inside steel studs that are 70mm thick and I'm worried it might crumple or sag due to the extra space. What ...
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145 views

Is it crazy to put a hole on a fridge?

I want to buy a mini fridge, not for food storage, but for storing stuff I don't want to evaporate (gets hot in my room during summers) or preserve. I'm thinking maybe once in a while I want to make ...
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20 views

Insulation in the attic with ridge vent and eaves

Do I need to leave space over top plate at eaves when adding insulation if I have a ridge vent
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87 views

Basement insulation w/ existing tar paper and studs

I recently pulled off old wood paneling in my basement, and would like to insulate it using rigid foam (silverboard or durofoam). Behind the panelling, there is tar paper, and 1x2" studs approximately ...
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1answer
87 views

open cinder block wall in basement

I am replacing some framing and sheet rock that has been contaminated by mice. The basement has cinder block walls that come up about half way for some reason. The house was built in the 1950s. In ...
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1answer
121 views

How should I insulate my garage roof if I want to use the garage as a workshop?

I have read a lot about proper insulation and ventilation, including some posts on this site, but none adequately answer my questions. My goal is to operate an electric heat source in the winter and ...
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3answers
510 views

How to insulate register boot?

The county inspector dinged me on a couple of things for my bonus room renovation. One of these things is wrapping the register boots (endpoints) in insulation. I've seen registers with this ...
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1answer
124 views

Why isn't shed insulation working as I expected?

I insulated my 3x3.5 m metal shed with 55mm thick foil lined "space blanket". Foil inwards, of course, is, not facing the metal. The metal walls & roof was initially & thoroughly lined with ...
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2answers
43 views

Insulate ceiling, walls, or garage door?

I live in Ohio and have created a golf stimulator in my attached garage. The garage typically stays around 10 degrees warmer than the outside without wall insulation except the interior wall. I can ...
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4answers
245 views

Should I insulate the garage in the home I'm having built?

I am an amateur woodworker and am having a new home built. My part-time workshop will be in the garage. Where I live (central Maryland), the winters are often cold (below freezing) and occasionally ...
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3answers
100 views

Can I add more insulation to my attic?

I currently have pink fiberglass bats in the attic. I wanted to add blown in insulation. My attic space is a bit unique. I'm used to a moderate sized attic that you can access. This attic has no ...
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0answers
24 views

What type of insulation should I use for varying joist spans of 3-4ft?

I live in the #3 region in California, and am wondering what the most cost effective and functional DIY method for installing insulation under my floors. I have kneeling room crawl space under my bi-...
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2answers
263 views

Is there long-term off-gassing from polyurethane closed-cell spray foam insulation?

We already installed Quadfoam 2.0, a "two-component, 2 lb., closed cell, spray applied, rigid polyurethane foam system" under the roof of our house, between the rafters. We read the manufacturers ...
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3answers
115 views

2 layers of plastic film window insulation?

I am insulating a single-pane window with plastic film (http://www.amazon.com/gp/product/B002GKC2GW?keywords=plastic film insulation&qid=1453679450). This window can't be opened, so I will keep ...
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25 views

Attic insulation problem

I am wanting to insulate my roof rafters and finish over it with Sheetrock but it's just my rafters directly to my roof metal, what do I have to do to my roof metal do I can insulate and not worry ...
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85 views

Can I setup insulation without tearing down walls?

My situation is this: I moved into a new apartment last year and my office is the only room that isn't insulated, which is annoying. My daughter's room and her playroom are both insulated as expected. ...
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1answer
46 views

Improving insulation on windows and preventing heat loss

Here are the images of my window (currently it's 18F/-8C outside, 74F/23C inside): Now, this condensation / ice forming gets even worse - on some days whole bottom of the window from the first ...
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542 views

Is it required for effectiveness to stretch interior window film?

Thanks in advance! Please let me know if I should provide more specific information, or if this is covered somewhere else. Short version: I am using a Frost King window insulation kit on a window. ...
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1answer
44 views

What type of garage door seal is this?

Is this a type I cannot find, or is this just a normal flat rubber type that has been shoved into the kerf cut, folded over, and stapled? If the latter is the case, any idea why someone would do it ...
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2answers
88 views

Aerogel insulation viable?

I have read that new aerogel-type insulation offers potentially better efficiency than ordinary fiberglass, albeit with greater cost. Is this true at a practical level? Should I look at replacing some ...
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1answer
124 views

Best insulation to adhere to back of door leading to attic space?

In the closet of an upstairs bedroom, there is a door about 3/4 the size of a normal door that leads to an unheated attic space. It gets pretty chilly in that closet during the winter months, since ...
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1answer
102 views

How to seal the exposed top of glass block windows

My basement has some glass block windows, that seem to be improperly (or not-optimally) installed. See picture.... As I understand it, there should has been a perimeter channel attached to framing, ...
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36 views

Jenn Air SVE47600 electric slide in range hole in oven--fire hazard?

My Jenn Air SVE47600 16 year old electric slide-in downdraft range has a hole (approx. 1.5" to 2" x 1") in the oven liner (underneath the broiler element) near a steam vent! Seems like it rusted. ...
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2answers
854 views

What is the minimum thickness of foam board when insulating a basement

What is the minimum thickness of the foamboard insulation that can be used when insulating a concrete basement wall when it comes to moisture control and temperature control? Obviously thicker is ...
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4answers
126 views

Should I use spray foam to insulate a basement?

Home in CT cape w/ uninsulated basement. Its a cold, not drafty house, with new Marvin integrity windows. The basement is very cold, and it seems like the cold basement is making the rest of the house ...
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1answer
42 views

What is the best skim coating for polystyrene sheets?

My log hut is extremely hot, I have glued polystyrene sheets to the ceiling and would like to skim to create a clean finished off appearance. The sheets are the pressed pellets type (not isoboard) ...
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30 views

Insulate space above ceiling in 3 season room?

I have a three season room attached to the house, built on a concrete pad. There is no heat or a/c out to the room. The ceiling is currently open and I can see the underside of the planked roof. I'...
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1answer
251 views

How to build a wall under duct work

So I'm trying to finish my basement. I have a conundrum as to how to build a wall under a soffit. Here's my situation - I have an HVAC duct that is running really close to the wall - like maybe 1.5" ...
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2answers
133 views

Do I need to insulate the entire basement or just a few walls?

I have a 1920s house with concrete foundation that had a semi-finished basement. After a recent 3-day rain storm, my basement flooded (about 1") due to hydrostatic pressure. It wasn't just my house -- ...
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1answer
58 views

How to build attic space in garage

I have a garage with a peaked roof supported by 2x6 trusses spaced at 48". I want to insulate the attic space. How should I proceed? I'm planning to toenail 2x4s perpendicular to the trusses (spaced ...
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2answers
52 views

Should I insulate a garage when converting it to a workshop?

I am wanting to convert my garage in to a workshop and i wanted to know how important it is to insulate the walls so i am never working in freezing or roasting conditions. I am in the UK so our ...
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0answers
38 views

How do you insulate with XPS around interior basement windows?

I'm using 2" XPS to insulate my interior basement walls. How do I work around windows? Do I cut it flush with the concrete opening? Do I spray expanding foam to seal the XPS against the concrete ...
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1answer
63 views

How to lay heat cable (de-icing cable)?

The issue I'm having is that ice builds up on the lower roof, creating a dam. The upper attic is double insulated, but is exposed to sun throughout the day. The lower roof (next to the sidewall) only ...
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3answers
140 views

Semi-finished basement, water-resistant “baseboards”?

I'm planning on applying foam-panel insulation over my basement's concrete wall. I'm told a fire barrier is required over that, either plasterboard or decently-thick plywood. I've been considering ...
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3answers
90 views

Adding insulation to attached garage

I have an attached garage I use as a workshop, and I'd like to insulate it since I plan on running water and sewer lines into the garage for a utility sink*. Right now, the garage is just studs and ...
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1answer
28 views

EPS insulation inside exterior walls

I have access to a large amount of EPS in the form of used multi-cubic-foot blocks (I believe they used to be boat dock floats). Because of the high R value of EPS, I am thinking about slicing them ...
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1answer
168 views

What to insulate first? Attic, walls, kneewalls?

I know a number of people in a similar situation that want to add insulation to older, poorly insulated homes. Homes are similar. Poorly insulated attics (6" of fiberglass batts), no insulation in ...
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2answers
154 views

How Do I Insulate My Bathroom Floor?

I'm renovating my bathroom and I need to insulate the floor. It's a concrete slab with 2x4 joists set on one brick piers. The home was built 50 yrs ago. There was no insulation at all in the floor. ...
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1answer
242 views

How to stop cold air entering through the breaker box

The breaker box is located in the laundry room of the house, which itself is an air conditioned space. I bought the house in the summer and this winter the room has been extremely cold even when the ...
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2answers
196 views

Insulation foam in hollow bricks and blocks

This is a wall in the extension to my house, which I estimate to have been added around the 1930s (house is 1909) using mostly large hollow bricks that look more like cinder blocks but are not of ...
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209 views

How to prevent heat loss over a recessed light?

I have a recessed light installed in a sloped ceiling - no attic space over it. On a cold morning when there is frost or snow on the roof and I stand outside the house, I can see a warm spot directly ...
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43 views

How should I go about insulating a 1920's stucco house in LA?

I own a two story, 3200 Sq ft house in Los Angeles. The exterior is stucco and the walls are lathe and plaster. A year ago we had some water damage after a rain storm. When the contractor demo'd ...
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1answer
53 views

Should there be a gap when adding insulation in a wooden outbuilding?

I'm currently in the middle of a home office project. It's a simple wooden outbuilding and I'm insulating it with polystyrene sheets. Once they are in, I'll go over them with with some tongue and ...