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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55 views

Is it okay to insulate some but not all steam pipes coming from boiler?

I have a Slant/Fin boiler with un-insulated pipes in the basement. The previous owners of the house finished part of the basement and covered some of the pipes behind drywall in the ceiling. Is it ...
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29 views

Crawl Space Insulation in Montreal

I have the ground floor apartment in a 100 year old triplex on the plateau in Montreal. It's an 800 sq foot apartment with baseboard electric heaters and I'm currently using over 110kwH per day to ...
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Could this be asbestos?

I'm gonna get the material tested - already bought the kit. But I'm wonder what people think - I thought it might be old mineral wool since I've seen stuff that looks similar to it. I'd read that ...
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26 views

Doors to uninsulated walk-in spaces

I have two 32" doors in my house that lead to uninsulated storage rooms. I'm concerned about my utility bills, and I'm wondering if these doors are appropriately insulated. What kind of door should ...
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18 views

Exterior Wall - Stacking Fiberglass insulation and Mineral Wool insulation

I am in the process of finishing my unfinished basement and had a question about stacking insulation. When framing the basement we realized we have alot of areas which have about 6~ inches of extra ...
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3answers
42 views

Is there a measuring method for determining of the real thermal conductivity of a building component?

We would like to determine which elements of building are to be renewed or changed. Among other things, we want know which elements are subject to a specific heat transfer. Does exist a measuring ...
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281 views

How to insulate brick/plaster walls from extreme heat?

I live in Rajkot, India. Temperature goes above 40 *C (104 *F) for at least 4 months a year. I live in a single floor house with 3 sides of house and roof is exposed to sunlight. It's a house built ...
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58 views

Blowing in Wool Insulation

We bought a house in Northern Arctic Minnesota last summer. After outrageous propane consumption this last winter I decided to check out the insulation in the attic. This summer a leak developed and ...
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57 views

Mid project finishing basement: should I rip out new framing?

I am learning that the wood framing that has just been installed (glued) in my basement really should have come after putting in continuous foam board insulation against the wall, separating the wood ...
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35 views

Adding new electrical outlet; ceiling insulation is sandwiched between drywall and plywood (attic)

I'm looking for a good technique to add an outlet to a wall that currently has no electrical. My initial thought until my discovery was to: 1) Identify the stud I want to anchor the outlet to 2) ...
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674 views

What's the best way to insulate an attic with 2x4 joists?

My 1938 home currently has zero insulation (aside from a few fiberglass batts haphazardly tossed about). The ceiling joists are 2x4 (spaced 16 inch OC), rather than the more modern standard of 2x6 or ...
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56 views

Insulating built-in air conditioners

My apartment has Frigidaire built-in air conditioner holders. I did not buy a Frigidaire AC unit because the size needed to perfectly fit the holder was unnecessarily large (and expensive). I have a ...
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68 views

Attic Temperature Affected by Insulation

I recently moved into the attic and converted it into my bedroom, There was insulation on the floor but none on the walls which made it uncomfortable to live in considering its the summer. I got a ...
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Another Question on How to Cover Up Exposed Insulation in A Basement Ceiling

I have read through many questions with a similar problem, but different circumstances than I have regarding this issue. The home is in Ohio so cold winters and hot summers built in 1997. I have a ...
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110 views

attic floor insulation vs. attic roof insulation

My attic is finished; 3 rooms, wood floors, plaster ceilings. I've gotten conflicting advice: some say insulate the floor, others the roof. The attic will not be used as living space. There are no ...
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What to put down under new carpet or “luxury vinyl tile” to prevent cold floors?

We have a hardwood living-dining room floor that was improperly installed (before we arrived), and squeaks and creaks something awful. We plan to rip out the old flooring and put in LVT (luxury vinyl ...
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92 views

How should I insulate a poured concrete exterior wall?

I've recently had to remove existing drywall and insulation in my condo in Ontario. Now I need to finish the walls. I was thinking of: Gluing 2-inch Durafoam to the concrete Putting in the proper ...
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53 views

Insulating Cathedral Ceiling

I have a 1989 house with a cathedral ceiling built 2x10 rafters 24" oc. I am about to redo the roof, which would give me a chance to pull up the decking and improve the insulation. I am guessing the ...
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Gap where two different roof lines meet - best way to close up?

In my attic today I noted that where two different roof lines meet and overlap there is a large visible gap where light was coming in. It looks like they shingled the lower roof and then built the ...
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66 views

Air Leaks Where Floor Meets Baseboard

Wondering if anyone had any suggestions to stop air leaks where floor meets baseboard. Is caulking the best way to go? The room with the air leaks has a cold floor anyway as it sits over an non ...
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83 views

Which is the better first step: rebuilding a basement closet, or insulating the basement walls?

Recently closed on a split-level. The basement was partially finished, with a closed off utility room and a hodge-podge closet (enclosed area in one corner of the basement with a door, separated from ...
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75 views

Improve existing roof insulation from the inside

We have a pitched roof (1971 house, The Netherlands) which consists of (outside to inside): Tiles 2cm PUR insulation 2cm wood We asked a few companies for quotations to improve the insulation (...
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64 views

Can I add insulation over the original layer in my new home's basement?

I am looking to finish the basement in my new house that has insulation wrap installed in the basement. The insulation wrap is an R12. After studding the basement can I add additional installation ...
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29 views

Fibreglass batt vs rigid foam insulation replacement in attic

Cleaning out attic in older 1954 rancher, original batt insulation badly damaged due to moisture (no leaks, but previous owners replaced roof in the winter) and rodents. Attic is vented via soffit ...
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36 views

How to fix chimney hole in roof?

I've starting insulating the roof and that got me looking at the "old" hole where a (useless) chimney used to be. That chimney got removed for a solar panel setup. As I'm insulating, this needs to be ...
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44 views

Insulation foam inside PVC sleeve for silcock

I just installed an outdoor silcock outside my basement. To avoid direct contact with the brick in the hole I drilled in a foot thick brick wall, I put a 1-1/4" PVC pipe and then the silcock inside it ...
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24 views

Does this loose insulation look like it might contain asbestos?

Was remodeling my bathroom, and after ripping open the ceiling a bunch of this loose insulation fell down out of my attic. Does this loose insulation from my attic look like it might contain asbestos?
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How to remove and reinstall wood panel walls?

I am looking at upgrading the insulation of a house from the 1950s that has vertical wood panel walls throughout. I think regular walls with drywall and paint are difficult to upgrade, as the walls ...
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1answer
292 views

Basement insulation in front of vapor barrier

I am getting ready to finish my basement. We have lived in the house for 7 years, never any moisture or water issues in the basement. It currently has pink insulation from ceiling to 12" above floor ...
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2answers
46 views

should concrete block wall be sealed on top?

I have a 2 story + basement townhome with 8" concrete blocks walls between my neighbors. At the top of each shared wall is a sheet metal cap. Some of the cavities have concrete in them but many are ...
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53 views

Do I need to insulate my basement?

I am currently finishing my basement and wondering if I need to insulate my basement. I have already framed all the walls. I have a below grade basement and the temp is pretty consistent. Local code ...
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29 views

How to cover area under vanity with PEX exposed?

I just installed IKEA vanity and it requires re-run new PEX. Since behind the wall is concrete at corner wall, only way is to run PEX outside the 2x4 like picture below. But now it opens a hole like ...
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31 views

How can i insulate exterior brick walls

How can I insulate a house that is brick outside with nothing between the brick and the inside wall without enough space to put insulation between the two walls.
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Box in knob and tube wiring between ceiling and cellulose?

I know that code says no cellulose insulation with knob and tube wiring because of possible heat build up. I also know that evidence of it causing fires because of this is scarce and a few states ...
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Condensation on air con causing leak, best way to insulate

In the roof there is a large metallic air con box, the drip is coming from one of the corners, see photos. An engineer has said we need an external drip tray, and/or additional insulation. WHats the ...
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223 views

Replace insulation in a Trane HVAC? (TWE030C140B0)

I found a little mold on the foil covering the insulation in my TWE030C140B0 air handler/ AC/Heater. I am 95% sure I have the moisture problem resolved and now I need to replace the insulation. Does ...
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16 views

Which side up on installation of Fesco Foam Insulation?

I’ve got a stack of Manville Fesco Foam insulation boards salvaged from a commercial installation that I’m repurposing for the inside of my garage roof. I’m planning on machining them to fit around ...
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153 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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148 views

Should I worry about this pipe insulation? (fiberglass vs asbestos)

I have found those pipes in my basement. I hope its fiberglass, but not sure if its asbestos, because it got placed in the 60's or 70's (in my country the use of asbestos got banned in 2005). These ...
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695 views

Plywood over rigid foam over concrete: will I have moisture issues?

Short version: If I install 3" of rigid foam over a poured concrete foundation wall that has been sealed with Xypex, will I have any moisture issues if I install plywood directly over the rigid? ...
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31 views

Adding fiberglass batts on top of cellulose; should I remove some cellulose?

I am adding unfaced fiberglass batts atop existing cellulose insulation in my attic. Currently, the cellulose is about 7 inches thick between/atop my 2x6 joists. I am wondering if it is worth ...
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28 views

Draft from fireplace

So I've read many diy ways to prevent the draft of an used fireplace. Mine is not in a working condition and I don't know if the previous owner of my home had ever used it. It's very very cold. I've ...
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1k views

How can install rafter baffle venting without removing drywall?

I have a finished attic, that needs to be updated. The pitched sides of the roof are sheetrocked & insulated, the ceiling is a suspended ceiling (will be sheetrocked) and the low knee walls are ...
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39 views

How to deal with the mess when working with Tuff-R

Recently we bought a piece of Tuff-R -- I guess you would call it a styrofoam insulation board -- and cut it to fit a small window exactly. It is a temporary measure, to get through the winter. The ...
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873 views

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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91 views

Insulating basement concrete walls - anything missing?

Live in Zone 5b, going to shoot for 2" of XPS DOW foam board. Planning on gluing it to the concrete wall with foam board glue and bracing it while it cures. It will run to either the top edge of ...
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45 views

How to build sunken shed foundation with insulation

I'm planning to build a garden office shed about 2.5m wide by 3m long. Regulations in the UK mean I cannot exceed 2.5m high since it will be close to the boundary of my property. The picture below ...
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433 views

How would I install hydronic floor heat on top of a rigid foam insulated basement floor?

I intend to finish a part of my basement following this guideline from Fine Homebuilding and Building Science. There are two options I could come up with for installing hydronic radiant heat ...
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519 views

Polystyrene or other foam instead of mineral wool in low pitch loft

Have a 1970's 3-bed detached house with quite a low pitch roof - thus making loft space and accessibility less than easy. We are UK based. We've got bare minimum insulation at present (seems to be ...
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Redoing insulation in the basement of the home I recently purchased

I recently purchased a home and have begun to do renovations on the basement. I am starting to look at insulation and so I have been researching what the best way would be to do that. The problem I am ...