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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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
226 views

What can I fill a trench around my house with to avoid creating a drainage issue?

I am planning out my footing insulation job. Right now it's a pretty standard floating slab-on-grade with footings extending down a few feet, and the footings are uninsulated. A ring of concrete was, ...
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2answers
909 views

Adding insulation to exterior wall; remove stucco cladding, or add on top of it?

I have an exterior stucco wall that's not in super great condition. The outermost-layer was applied very badly and is flaking off, so doing a patch job or yet another layer seems like a bad idea ...
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2answers
736 views

How should I insulate this basement wall?

I've been doing a lot of reading. I live in Maryland, not particularly cold. We have an 8 foot ceiling in the basement which is poured concrete built in 1973. Only about a foot is above grade. I've ...
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2answers
136 views

spray foam personal protection

I have a closet in the master bedroom of my home that is on an exterior wall. Unfortunately there's no insulation on the back wall of the closet and so a lot of heat escapes. We keep the closet door ...
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157 views

How can I get the maximum light while avoiding heat from a window?

I have a west facing window. How can I get max light while avoid any heat coming from it?
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1answer
214 views

How should I mount external hardware to a Greenboard/EPS exterior wall?

The external cladding of my house is rendered NRG Greenboard (an EPS product). What is the best way to mount simple external hardware (specifcally, a hose reel) to this material? The reel itself just ...
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1answer
1k views

Should I install vapor barrier in my basement bathroom?

I have a brick house built in the 1920s. I'm installing a bathroom basement based on an existing layout, but I'm trying to keep the "wet" side (mechanical room with hot water heater, etc.) physically ...
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3answers
5k views

What is a good solution for hiding insulation in an unfinished basement?

First off, let me note that I am a tenant in this house. My landlord lets me do small improvements, but I'm not going to finish the basement with drywall myself. Basically, we have an unfinished ...
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1answer
590 views

Could space above a drop ceiling and below sound absorbing insulation increase echo in room?

Our builder has asked whether we have any objection to his laying sound insulation on top of the suspended ceiling he's going to install, rather than attaching it to the actual ceiling above. He ...
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1answer
3k views

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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1answer
28 views

Options for insulating a ceiling that is already finished (former 3 season room)

Is there a way to insulate a ceiling that is already finished and has no access point? More details below: Recently purchased a home in Eastern Massachusetts; one of the features was a room off the ...
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1answer
75 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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1answer
100 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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2answers
161 views

How can I insulate behind pipes that are close to a foundation wall?

Reading around, it seems like most people suggest to put up XPS insulation when finishing a basement. That's great and all, but how do you put 2" of rigid foam behind pipes that already exist in the ...
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1answer
277 views

Can I properly install Roxul mineral wool batts in a mostly-drywalled stud bay by pushing them up from below?

Using my nifty thermal camera, I discovered that my furnace closet's combustion air duct (visible in this question) is getting really hot when the attic heats up, and then (being sheet metal) it ...
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2answers
71 views

How to check the type of installed insulated glazing

In the Netherlands, insulated glass is rated by a standardized rating system, classifying it into 3 categories by the u-value: HR : U value between 2.0 and 1.7 HR+ : U value between 1.6 and 1.3 ...
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1answer
152 views

What type of insulation can I use to insulate around my furnace exhaust?

I've got a cold breeze blowing through my basement, originating from where the furnace exhaust turns vertical. What type of insulation can I stuff in around the exhaust, to stop the cold air? This ...
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2answers
87 views

Recommended method to insulate a raised (joisted) floor in the UK?

We're just about to get a new wood-burning stove fitted with an external air feed and have a load of squeaky floorboards which need fixing in the same room, so we're planning on taking the floor up. ...
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1answer
209 views

How can I insulate my attic conversion, without pulling down the plasterboard?

I recently purchased a house, and it has an attic conversion. Once winter came along we found out that there is no insulation between the roof and the plasterboard. Does anyone know of a way I can ...
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2answers
4k views

Should I add batt insulation to concrete basement walls?

We're planning how to finish our basement, and haven't been able to figure out something related to insulation. The home's in Minnesota, and was built in 2008. XPS insulation (installed by the ...
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2answers
4k views

How do I properly insulate an attic ceiling?

I'm considering insulating my attic ceiling using a foam kit. Doing a bit of research tells me that air sealing and proper ventilation are key I live in Long Island NY and currently have about R-19. ...
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4answers
3k views

What to do with a cold corner?

I live in an apartment on the 4th floor. My bedroom has the misfortune of being in the very corner of the building - it has two outer walls. On top of that, the corner between these two walls is ...
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3answers
959 views

Vented vs unvented crawl space

I've asked this question before: Vented vs unvented crawl space However, now that I'm going to get air conditioning the question comes back again and again people seem to have different opinions. ...
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4answers
835 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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2answers
3k views

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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1answer
158 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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1answer
95 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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1answer
164 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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1answer
170 views

Can I insulate between a brick chimney and drywall?

Can I insulate the space between a brick chimney and the drywall inside my home? I am getting heat transfer from the brick to the drywall in the summer from the sun heating the brick. My thermostat ...
2
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1answer
142 views

Is rigid foam on rim board in basement worth doing if walls aren't insulated?

We bought an older home that we use more as an office. The basement is totally uninsulated including the rim joists. Last winter, it got really cold down there to the point that the floors upstairs ...
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1answer
48 views

crawlspace insulation

I have crawlspace with an earth floor. it is approx. 24" from the ground to the floor joist. I have 6 mil poly on the ground. I have vents that will be opened in the summer and closed during the ...
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111 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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1answer
1k views

What can I use to adequately insulate round rigid metal ducts?

I'm installing properly sealed round metal ducts in my unconditioned attic for heating and cooling. I've probably got 100' total of 6" duct to cover. I'm trying to achieve an R-8 insulation value, ...
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2answers
179 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 ...
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1answer
98 views

Will closing the ventilation windows in my garage cause problems for my water heater?

I have a room directly above my garage and it's usually 10+ degrees difference in temperature compared to the rest of the house. I'm planning on insulating the door and the garage ceiling with rigid ...
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1answer
500 views

How can I improve the insulation in the lower attic space?

I live in a house with a finished attic. There's a substantial upper attic (big enough to walk around) and there are also knee walls between the upstairs rooms and the lower attic. There is ...
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2answers
740 views

Is dirty batt insulation on attic floor a sign of air leakage?

My attic is 530 sqft, with soffits, ridge vent and some 18"X18" window with mesh over it (I cant recall its name). The house was built in 1960 and has batt insulation on the attic floor. The batt ...
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1answer
401 views

What is the best way to install insulation batts in an attic?

As far as we can tell, the attic is laid out like so - first is the 2nd floor ceiling, then whatever material is right above that, then the attic joists, then there is plywood nailed to the joists, ...
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1answer
329 views

How can I insulate my attic in southern California?

I live in Southern California (San Bernardino county), and I'd like to add insulation in my attic. cathedral ceiling; 1/2 of entire roof has no attic space how do i insulate this space? the other 1/2 ...
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1answer
262 views

Can I increase the efficiency of a refrigerator by replacing the door insulation?

I am in the process repainting the refrigerator doors, and cleaning up the rust on the inside of the doors. The question is, would I increase the efficiency of operation by replacing the original ...
2
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1answer
395 views

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 ...
2
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1answer
377 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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1answer
169 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 ...
2
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2answers
2k views

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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0answers
16 views

How can I stop my windows from leaking when mild winter weather occurs?

We have an 11 year old bungalow and this problem only occurs on the middle section of a bay window. We think that frost happens inside the insulation somewhere and when the temperature outside is mild ...
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30 views

What could cause moisture on my bonus room floor?

Last week during a cold snap with high winds. I discovered moisture along the floor on one side of my bonus room, above the attached garage. Their was enough moisture that the baseboard molding ...
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1answer
23 views

How can I repair a bathroom fan under garage that is leaking in the winter?

I have a rigid metal exhaust pipe coming out of the bathroom fan over my downstairs bathroom. It goes up at approximately a 30 degree angle for about twenty feet and stops just before it gets to the ...
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0answers
73 views

Cost of XPS panels vs. sprayed closed cell foam

I'm starting the process of finishing my nearly full height (7'2") basement and am costing out the insulation. Based on my research of what's best below grade, I'm debating between XPS foam panels ...
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0answers
30 views

What is the best way to subdivide and heat a large room?

I live in a large room and would like to subdivide my room, such that it can be heated with a space heater/small mobile radiator. I live at the end/corner of a large L shaped room, with concrete ...