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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Window insulator kits performance

We live in the snow belt with the temps dropping down to 5-10 for the winter months. The house is 20yo. For the last 2-3 years its windows began to frost overnight, and the heating bill went up. A few ...
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What is this material? Could this be containing asbestos or any other harmful material?

[![enter image description here][1]][1] I have this in my furnace room stuffed above the duct and also on the ceiling if u see one of the picture. What is this? Can it be containing something harmful ...
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Is any amount of moisture normal on exterior sheathing?

I'm renovating a living room in my 1940 two-story home in Central, NY which involved adding insulation where there was previously none. Before the drywall goes up I decided to run some electrical ...
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What upholstery materials could be reclaimed for insulation?

That couch my neighbor just threw out has lots of light, fluffy material that superficially seems similar to the light, fluffy stuff behind my drywall. Could it be used similarly? And what about the ...
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Why is my house energy efficient only in winter?

My electric utility company sent me a graph of my home's electricity usage over time as shown in the picture below. My home beats what the company considers as efficient homes in the neighborhood when ...
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How can I fix a cold and damp extension room?

We recently bought our first house, a rather old 3-bed terraced house. The adjacent house has been empty for 4 years. The 3rd bedroom in my house is a single room extension I'm using as an office and ...
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Is it safe for knob & tube to be touching insulation facing?

Is it safe for insulation to be placed underneath existing knob and tube if only the insulation paper facing is touching the wires? Or is it be better to remove the insulation and leave a portion of ...
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21 views

Vapour barrier for insulated, occasionally-heated Toronto shed?

I'm building an 8x12 garden shed in Toronto Canada (cold winters, fairly hot & humid summers). 2x4 construction, exterior Tyvek wrap, hardie siding onto studs, roof is metal standing seam over OSB ...
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How can I deal with condensation on the vapor barrier in my basement energy walls?

Climate Zone 5A (Eastern Nebraska) I’m needing guidance on properly insulating basement walls that already have 6 mil poly fastened to the wall as part of a basement perimeter drain system. I recently ...
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Potential risk of fire in attic insulation? [duplicate]

I was checking something in the attic today and noticed there are some black spots on the "paper/lining" side of the insulation (picture attached), obviously the black spots are the areas ...
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How can I install insulation batts between joists with variable spacing?

I am trying to put insulation above a garage but the problem is the space in between the cross beams are different. They varying between 16", 17", 18". What would be the best way to ...
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Should I insulate below my in-floor heat where there's conditioned space owned by others below?

I live on the third floor of an apartment complex, meaning I have two neighbors beneath me who essentially heats my apartment. I want to install floor heating through a water heat pump and I have read ...
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Temporary Insulation - Window Fan

I live in an apartment without adequate kitchen ventilation. I like doing a lot of wok cooking, which tends to result in enormous amounts of smoke - tripping smoke alarms and getting into all of my ...
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Can I install rigid foam between my rafters to insulate?

Can I double up on an 2" Foamular insulation board to create an R-20 value in my 2x6 rafters Do I cut the foam at the exact 14 1/2" opening or do I cut it at 13 1/2" or 14"
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Is foamboard insulation on top of ceiling joists a bad idea? Is there a better solution if I can't have insulation directly on top of ceiling?

I'm installing Armstrong Woodhaven ceiling panels in the kitchen of a ranch home, so the panels will be attached to the ceiling joists, with the backside facing up into the attic (the ceiling is ...
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Insulation boards with foil facing outside - condensation issues?

AFAIK the best-practice for applying insulation+vapour barrier in cold climates is: inside -> inside wall -> vapour barrior -> insulation -> outside wall (exposed to the elements). If you ...
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how to reduce heat lost to attic through attic door

I have an attic door which is a hollow core bedroom door and my thermal camera measures it at a good 7 degrees F cooler than the wall around it, which means that I am probably losing heat. The door is ...
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Do Low-E window films help with winter heat insulation?

We are experiencing cold winters. Just curious if window Low-E tinting (or others options) on actual windows help with heat insulation or if it's just a gimmick. I am referring to actual film (seen ...
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Tips for closing a gap between outside door and floor

The door to my new apartment has a large gap that allows cold air to flow in What is the best, simplest and most effective way to plug this gap?
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Is there any reason to not caulk/foam between the garage door jamb and rough opening?

There is a gap between the rough edge and the garage door jamb. From some research, it seems like it's common practice to caulk/spray-foam this area to prevent drafts/etc. However, before doing so, I ...
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Insulating solid walls, permeable membrane vs solid insulation

I've got an integral garage being converted to living space (bedroom). Around half the longest wall and rear wall is below ground which is insulated and well drained from the outside. Front wall ...
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Best material to protect concrete outdoor retaining wall from BBQ/pizza oven built onto it

Note - I've read Should I insulate my pizza oven between the firebrick base and concrete? and Will a slab poured with mortar stand up to service under a pizza oven? but they aren't rerally what I need....
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What to do if insulation is too thick?

I was careless with an insulation order (months ago, non returnable AFIAK). I bought faced batts of R-30, labeled as 10 inches thick for my garage. However, my garage framed with regular 2x4. How much ...
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48 views

How can I insulate this junction box?

I have a junction box in my unfinished attic that supports a light fixture in the room below. It doesn't fit exactly to the lath and plaster and I'd like to insulate for sound intrusion (the attic is ...
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49 views

insulate walk up attic stairs (not pull down)

I have a full set of stairs that walk up into an unfinished attic space. The full sized access door to these stairs is in a hallway as if its a closet. Unfortunately, the max distance I have under ...
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Vinyl siding on concrete walls

I have to install vinyl siding on an exterior wall built from concrete blocks. Anyone have any tips on correctly weatherproofing and insulating? I was thinking to lay 3/4 EPS rigid insulation then 1/4 ...
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55 views

Door weatherstripping gap after new door install

TLDR - Installed a new door but old door was non-standard size by about 1/4, about 80 by 36 1/4. Added 1/4 strip to hinge jamb but now there is a gap with the weather stripping and serious draft issue ...
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How can I insulate aluminum window frames?

I live in a rented apartment with aluminum window frames and double-pane windows. Now that it is heating season, I am noticing that my window frames are incredibly cold to the touch when it is cold ...
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4answers
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Secondary window glazing in Texas

I have 11 square 31"x31" double-glazed windows (likely not low-e glass) that are aluminum framed without a thermal break, so the interior frame becomes almost too hot to touch in the summer ...
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What Rigid Foam Insulation Thickness is Comparable to 300mm Rock Wool Insulation?

I'm in the UK and in a house built pre-1900. In there I have rock wool on top of old rock wool and vermin are finding this very inviting (found out after I bought the house). Because of the smell and ...
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42 views

Is the water pipe / plumbing insulation similar to air conditioner line insulation?

I'm trying to change a worn out insulation on the air conditioner outside of the house. Is the plumbing insulation similar to the insulation on the cold AC line (refrigerant line?) on the unit outside ...
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59 views

How best to insulate against heat loss from house to garage?

I have a utility room with an internal door leading to the garage. The utility room is warm but loses heat through the door into the garage. The garage has a roller door made of pretty thin metal with ...
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Insulating and leveling sunroom floors

We have an old, 1911 house in Minnesota. Our front room is a converted porch which is drafty and quite sloped. Our plan is to rip up the old linoleum floors, get down to the joists, and essentially ...
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How should I insulate my old brick house?

My house was built in 1920 out of a single layer of 8-inch thick hollow brick. I am looking to insulate the walls in the upstairs entirely from scratch -- there's no insulation on them at all right ...
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Is there a feasible way to insulate one half of a single room?

I live with my partner in an apartment (I'd say our room is roughly 300~ sqft) and there's a bit of an issue with room temperature that we can't really put down. They love it cold and I prefer it more ...
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Buying a large shed to use for a climate controlled workshop, what insulation options do I have?

I'm going to get a prebuilt shed and I want to use it for a workshop so I want it climate controlled (I live in New England). Before I order I want to make sure I get anything I need added on (house ...
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Fiberglass fills attic rafters, planning another 3" of fiberglass perpendicular to rafters, but how should I navigate my attic after installation?

I have fiberglass filling my rafters, very nearly to the top. To meet my insulation target, I plan to install another 3" layer of fiberglass perpendicular to the existing fiberglass... but this ...
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50 views

vapor barrier insulated attic (floor over garage

I recently hired pros to spray foam my attic, essentially sealing the soffits, roofdeck, ridge vent, and the removed all cellulose insulation to allow air exchange and balance the conditioned space ...
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Does the sill gasket foam compress?

This is related to this question: How can I attach drywall directly to cinder blocks without using furring strips? I am replacing an older strip of drywall that is at the bottom of the wall The upper ...
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Should I use PIR or mineral wool (or both) to insulate an interior-ish brick wall?

TL;DR: exposed wall of a brick room in a shed-like roofed structure, what to insulate with? I live in a late 19th century log house in central Russia. It's got an uninsulated extension, as most of ...
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98 views

Insulating a shed roof for winter use

I’m building a small (10 x 12 ft) shed in my backyard that I plan to use occasionally as a workshop. I live in Vermont, and wouldn’t use it during the dead of winter, but want to be able to make it ...
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Insulation tape behind a baseboard heater

In the apartment I am in, there is baseboard heater located under the balcony door During the winter cold air come through the wall, and from gaps or crack between the wall and the floor Usually ...
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Insulating stuccoed terra cotta garage walls

We have a detached garage that's made of hollow clay bricks (structural terra cotta) covered in stucco, both inside and out. I'd like to insulate and heat it for use in the winter. The problem is that ...
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attic remodel - insulation, ventilation, and general questions

it's time to really get to work on my attic remodell. House is gable roof home with continuous soffit vents (of a kind - my home doesn't have eaves really, there is only a tiny amount of overhang, so ...
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Is this fiberglass insulation?

I'm having a difficult identifying the type of insulation behind a section of drywall. The home was built in North America around the 1940s. It's undergone several rounds of renovation projects and ...
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CO2 from ductwork, HVAC and gas tank in attached garage

We live in older house in northern US with annual wildfire smoke and have exposed ductwork, water heater and HVAC unit in attached garage. No wall or room separating it from rest of garage. How do we ...
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Best insulation for water pipes in garage ceiling? [closed]

I have an unconditioned garage with a few water lines near the exterior wall and above a garage door. I live where the temp could drop to 0 one or two times a year, but in the winter is mostly about ...
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36 views

Proper Insulation or Casing for Running BNC Camera Cable Outdoors in the Cold

I am installing closed circuit surveillance cameras outdoors in a very cold climate (reaching as low as - 30 deg. Celsius). What would be a sufficient way to protect the wires in this climate? I plan ...
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Which damp foil / vapor barrier shall I use when insulating?

I'm insulating using rockwool between two floors and wondering which foil shall I use on the small section that faces the outer wall? Its a old poorly insulated house from 1930 with brick walls. Also, ...
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What is the right way to insulate a cinder block basement wall from inside when you only have room for furring strips and drywall?

The wall behind the toilet in the bathroom I am renovating is cinder blocks When this was finished the wall was first covered with some black paper (like tar paper but thinner) then they installed 1x4 ...

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