Questions tagged [insulation]

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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2answers
79 views

How to properly insulate a room [closed]

I am converting a small room in my house with 2 interior walls and 2 exterior walls into a sauna. It is of paramount importance that no heat leaks through the interior walls into the adjoining ...
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Why does Knob and Tube need an air gap?

I know that knob and tube wiring needs an air gap to dissipate heat. I know that modern sheathed cable does not need an air gap. I know both are made of copper, one is grounded, one not. So why does ...
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Can I step over pink wool like insulation in the attic?

This is related to this thread How do I get rid of this ceiling finish and what is its name? I have Artex on the ceiling and I am thinking about removing the drywall entirely and replacing it with ...
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How can I best divide a connected two room into separate bedrooms?

Renting an incredible apartment with two other friends, catch is that it is 2-3 bedrooms 'depending on disposition'. The room/s in question are shown in the photo. What's nice is that each would have ...
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Tuff Shed and adding climate control

I live in north TX near Fort Worth. Not a humid place but a very hot place, averaging 104 degrees in the summer outside in afternoon. I was planning to buy a Tuff Shed 16 X 20 shed with asphalt ...
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Can you insulate a brick veneer house by adding exterior layers of insulation?

In my neighborhood a guy is renovating his house and adding a floor to his bungalow. To my surprise this week all his walls are covered in some white sheets of something that seems to be insulation ...
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What type of interior vapor barrier is appropriate in the southern US?

I'm in the midst of a remodel in Austin, TX and I'm struggling to resolve the "right" way to go about insulation for exterior walls in this region. I'm generally familiar with the concepts of vapor ...
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1answer
55 views

Insulating a basement bathroom

The new basement bathroom is framed and passed inspection. Ready to insulate and close. My first question is about the ceiling. We plan to use fiberglass batts between the joists in the ceiling. Above ...
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Do I need to replace attic insulation directly against new framing for a bath fan?

I have to temporarily remove insulation to install a new bath fan. The installation will require installing some 2X4 framing to hold the new fan in place. Is it enough to simply fold the insulation ...
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How to insulate drywall from odor?

I have a strong odor coming from my "hoarder" neighbor upstairs. It is seeping through a drywall column that houses a metal ventilation shaft (in the corner of my bedroom closet). I am thinking of ...
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230 views

Will garage door insulation improve cooling efficiency?

I use half of my two car garage as a garage and the other half as a gym. I am lucky enough that when the house was built they routed AC ducts to the garage but since the thermostat is inside (and I am ...
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What is a proper size air conditioner for Texas 384 sq ft?

My cabin is in north Texas (aka Hell’s Furnace) and is 16x24. I have R19 walls, R25 ceiling, and R20 floors. The walls are 2x6 and I have 7/16 OSB sheathing and Tyvek wrap between sheathing and siding....
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how to insulate attic that contains high-efficiency furnace?

We have an older home with a separate high efficiency furnace for the second floor. It sits on a floored area of the attic. We have virtually no insulation and I've gotten various recommendations ...
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converting single pane windows to double pane

I have wooden, single-pane (1/8" glass), double-hung windows on my house which have held up well considering they are nearly 70 years old. But, I don't want to put a lot of money into the house and I'...
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Difference between various Radiant Barrier types

Can someone explain me the difference between radiant barrier types and which one is the best option? I am seeing products like foil, Double Insulated Metalized Mylar Double Foil Bubble Wrap. I do ...
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757 views

Sealing a tilt type garage door

I've got a tilt type garage door with gaps on the side. I've sealed the top and bottom, but I'm not sure what to do with the sides. I've googled a bit and it turns out that it's recommended to just ...
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286 views

Can I put insulation under roof between joists

I bought an old home. There is new blown in insulation on the floor of the attic. The attic will not be a bedroom BUT will eventually be a kid's playroom. My plan is this: Build a subfloor over ...
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294 views

Sealing and insulating drywall within a range hood

Our range hood looks like this: I discovered a ton of freezing cold air coming from the top of the hood recently. I took a ladder, and it looked like this: Cold air just pours through the opening. ...
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Is it worth it to replace T1-11 siding just to install house wrap?

I'm having some siding repairs done by contractors. When they took the siding sheet out, they found out that my house has no house wrap between the frame/wood and the T1-11 siding sheet. There was ...
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Making a house warmer [closed]

Will it make my house warmer if I put plastic over my existing walls and then cover that with paneling? My house is old and I don't want to tear out the drywall that is there now.
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Are insulation baffles necessary if the side attic has roof vents?

I am doing some remodel work in my finished attic. I've removed some drywall and have temporary access to the side attics. I'm concerned about the insulation and would like to fix any problems now ...
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For my window, what's the best way to seal and insulate?

The inside: The outside: The installers gave me a window unsealed on the outside but sealed with a rubber seal on inside around the frame (windows are uPVC). After rain, the damage was done to ...
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What can I do to further reduce solar heat gain with existing Venetian blinds?

Have a large bedroom window that get's very hot late afternoon sun in the peak of summer. It has basic white aluminium venetian blinds on it that from what I am aware don't offer much in the way of ...
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1answer
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What window insulation can I use for thin gaps?

I'm helping someone who moved into an older rental house with very old windows. The house is great but as shown in the pictures, some of the windows have significant gaps, so of course air (and even ...
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638 views

How should I air-seal this gap by the floor along an exterior wall?

There's a gap between some of my floorboards and the baseboard: The gap isn't just cosmetic. I used a wooden skewer to probe the hole and was able to insert it around 6 inches in: This is an ...
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Is this stuff in my furnace toxic?

I am in the process of removing an old coal furnace. after removing the natural gas conversion kit I now see some type of loose filler or insulation which was present around the conversion kit pipe. ...
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Insulating a 3 season room with no crawlspace access

I have a small room off of my kitchen that appears to have previously been a back porch with cement blocks as its foundation. I already re-insulated the walls and ceiling, but there's still obvious ...
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805 views

How to fix condensation between layers of insulation in unfinished wall?

An above grade portion (wood framing) of my basement walls (in unfinished furnace room) is currently insulated with faced R19 fiberglass batts. I live in nothern climate zone 5. Unfortunately there ...
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1answer
381 views

Insulating a 4" gap between roof and false ceiling

My house has a false vaulted ceiling with a 4" gap between it and the roof. Unfortunately, whoever installed this ceiling neglected to install insulation in this gap. However, I can access the gap ...
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83 views

What is the best way to build up attic framing?

I need to build up my attic framing for three reasons, but first, I can think of two ways in which to do this. The Methods Method 1 Put new framing on top of the original framing along the existing ...
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605 views

Wall paint bubbling on edge of window from lack of insulation, how to fix?

Window and walls were done only a month ago. The only time it rained was once this week. What are these big blobs and could it be because of the light rain? Should I leave them or fix? Could it be ...
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243 views

How to insulate under a front door

100 year old brick house with a new front door. Thee door is awesome at stoppiing the cold, but there is a space under the door where cold still comes in. I originally put some fiberglass pink ...
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Insulating the space under our kitchen

We bought a house about 6 months ago that has a kitchen addition (house is about 110 years old-not sure about addition). Over the winter we have learned that the space underneath must not be insulated ...
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1answer
2k views

Should I insulate my rafters in addition to the ceiling in an unconditioned attic?

I'm not quite sure that this question has been asked, but I might also be misreading some earlier questions. Regardless, I am installing fiberglass insulation batts to go in my (sadly) 2x4 ceiling ...
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1answer
130 views

Cold floors and drafts

I have a 12x24 building that I built for band rehearsals last year and since it has gotten very cold here in Alabama (was 9 degrees F today) I have noted that it is almost impossible to heat. It's a ...
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129 views

Spots on ceiling

I've got spots on my ceiling in one of the bathrooms in my house. There are 3 spots in a straight line. They are perfectly round and very small. I am thinking they are the nail heads as magnets stick ...
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848 views

What does water leak through my chimney and wood stove pipe?

I bought a house n July 2017. The previous owners converted their fireplace into a wood stove years ago, a Garrison Stove in 1987 to be exact. My home inspector did not inspect the wood stove, but ...
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If I want to expose the beams of my ceiling, is it sufficient to just install roofing insulation?

I own a house built in the 1930s. I live in San Francisco in the Bayview district where it’s fairly sunny similarly to the Mission District. This house is all lath and plaster and because of which I ...
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Installing insulation in the cavity between LED retrofit assembly and IC-rated can

I have some existing IC-rated cans that I can feel (and see with an IR camera) are leaking cold air from my attic into my living room. When installing an airtight LED retrofit assembly over it, is it ...
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Freeze prevention in garage

My garage is below a heated room, and there are heating pipes running through the garage to heat that room. In the recent incredibly cold spell in New England, one of those pipes froze and burst. I ...
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How should I insulate a 3 story 1920's lath stucco house in New England?

Best and worst ways to insulate 3 story 1920's lath stucco house in New England? Is there any type of insulation I should be careful to avoid? In particular, I am concerned about the permeability of ...
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Covering a Window with insulation

I am a college student living in a cheap rental. I have a window in my bedroom that leaks a lot of cold air. I live in a northern climate, and during this recent cold snap my heater can't keep up. The ...
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694 views

How to insulate a thermostat

Some previous owner of my home moved the original round 2-wire thermostat to a wall of the vertical chase used for the hot water heater vent, the gas lines, etc. The wall is quite a bit colder than ...
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797 views

Insulating a 2x4 wall with exterior rigid foam

I'm gutting the interior and redoing the siding of my old house. Unfortunately the exterior walls are only 2x4 which makes it challenging to reach R20 code let alone go above it to make a greener more ...
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Insulating slab and vinyl siding

I have a really cold corner of my house in a duplex. Here are some shots from an infrared camera. I hope we can get this fixed without tearing down the siding or ripping out freshly installed kitchen ...
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Why would you ever choose open-cell spray foam?

I've been researching spray foam for the attic in my Maryland house built in 1901. Currently it's a vented attic, and we've decided to spray foam the bottom of the roof deck, turning the attic into ...
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343 views

Fiberglass or reflective roll insulation for duct work?

I have some exposed duct work in my garage. I am looking to insulate it and was looking at the types of insulation. Is is better to use fiberglass or "bubble wrap" reflective roll insulation? I live ...
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How to insulate brick gap behind steam radiator?

On my bathroom floor I can feel a ton of cold air coming through right behind my steam radiator when it is off. Here is a picture of the radiator with the cover on. Below is a picture with the ...
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1answer
1k views

is it ok to peel paper from faced fiberglass batt insulation?

An above grade portion (wood framing) of my basement walls (in unfinished furnace room) is currently insulated with faced R19 fiberglass batts . It is very drafty because the batts dont fit perfectly ...
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2answers
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What is the R-Value of plastic over a window?

So we're about to have a cold snap (20 degrees, cold for us here in Central Texas). I have old windows on the house in need of replacement, but for now, I did a hack for the next week/month: I placed ...