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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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Are 1x2 walls ok for framing the bottom kneewalls in my basement?

I'm in Minnesota. We have a unfinished/partially finished basement with daylight windows that we plan to work on. I'm trying to understand if it's OK on the kneewall where the Polyisocyanurate foam is ...
medelman's user avatar
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Previous owners put insulation over the foundation. Is it alright to remove this?

We live in southwest Ontario, winters don't get too cold here and there's already insulation on the inside. Would we be best to put siding over this or should we just remove it? Rodents have been ...
Andrew Bullis's user avatar
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Ideas to insulate telecom box in closet

Looking to insulate this box in my closet, I have cockroaches in the house and I think they are coming from this opening, because the wires go up into the attic and I seen them crawling around up ...
catsfw's user avatar
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In what order should tar paper, rigid foam and Tyvek wrap be installed?

I'm preparing to replace Stucco of my old house with new Jame Hardie siding. After the stucco removed, I'd like to add 1 inch rigid foam to enhance the insulation because of the old 2x4 wall not ...
Yifangt's user avatar
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Understanding the concerns with vented to unvented retrofit of attic

I am working within a generally hot and humid location that might become quite cold, but only briefly in the winter (zone 3 below the humid line). I recently inherited an A-frame house that has blown ...
Atl LED's user avatar
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How to insulate space between ceiling and roof

I bought a house where someone converted the attic into a bedroom and they did a great job of insulating the walls but didn't do anything between the drywall and the roof. Today was 80 degrees and ...
user187676's user avatar
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Insulating attic room with lath and plaster walls [closed]

I am new to a 1920's home in Massachusetts and the attic was built out with one small room, using lath and plaster walls. I am looking at how to insulate the walls of this room from the rest of the ...
Trevor C's user avatar
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Insulating above suspended basement ceiling

I've got a basement room that is not connected to the rest of the basement, is not heated and has poor insulation. Our living room is right above that basement room. The ceiling/floor between the ...
Johannes Bauer's user avatar
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Would this type of window insulation be effective in cooling my room and keep heat out?

I have 2 sliding windows in my room, both windows have window type AC units either in front or next to the back-side of the AC units (I guess the radiator/hot side of the AC. Idk much about AC parts). ...
hskankpvjsk's user avatar
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Im insulating a shed for year round use

Hi I'm in southern indiana and I'm insulating a 10x20 shed for a game room/office, i will have a 12k btu ac and 11k btu heater, it is 2x4 construction. Im planning r15 fiberglass and 3mm radiant ...
Thomas's user avatar
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I am in the process of converting an uninsulated block industrial building into my residence. Any suggestions based on my proposed wall assembly?

On the border of US Climate Zones 4 and 5, the building is slab on grade and interestingly has 2 slabs, one on top of the other with a plastic barrier between them as illustrated. The existing ...
Tom's user avatar
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What is the order of operations for cleaning up the attic, insulating, adding and attic fan and re-roofing?

I want to do this in the most cost effective way and to minimize re-work. Some geo context… we live in Southern California where it doesn’t rain much generally, but the recent rains have shown the ...
milesmeow's user avatar
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Help identifying this insulation

Good evening, Thank you for you help in advance. There is some insulation in this cupboard and it would be useful to get an inkling of what it is made of. The white one at the side seems to be the ...
Robert Fls's user avatar
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Gap between Rigid Foam Boards and Wall Framing (About 2 inches)

I am currently finishing my basement. I will be putting 1" rigid foam on the concrete wall of my basement and will have wall framing about 2 inches away from it. Is there a code or best practice ...
Peter's user avatar
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Insulating an attic in hot, dry weather

Have an attic on a single floor house, nothing up there but our AC and lines. We've been spending a fortune on electricity so I decided to try some insulation. It already has the insulation above the ...
CBob's user avatar
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Using ceramic fiber insulation as alternative to type-x drywall on garage ceiling

I'm currently renovating my garage, which has a bonus room above. I've removed the existing type-x drywall on the garage ceiling to install some Rockwool sound / fire insulation in between the truss ...
tripleblep's user avatar
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Insulating living space inside a shop

I have a shop that is dried in, but not insulated. I have built a living space inside this building. The "exterior" walls do not have to protect from water, but I assume I need a vapor ...
Wyatt Watkins's user avatar
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A question regarding spray foam installation on damp foundation walls

We're scheduled to have our cinder block foundation/crawlspace walls sprayed today, however we got some rain last night and there's a good chance that some of the wall surface will be slightly damp. ...
W n's user avatar
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Uncovered fiberglass in exterior wall?

We are removing a corner prefab wood burning fireplace. One wall behind the fireplace and part of the ceiling are exterior structures. When we took the drywall down, we found that the fiberglass at ...
Daltoniana's user avatar
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Vapor barrier in crawlspace is stapled to the top of the space and not on the bottom

I just got a house that has a vapor barrier installed to the top of crawl space on the bottom of the insulation (image attached). I live in the wet part of the PNW and was wondering if this is ...
MyWalletIsOnFire's user avatar
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Should I install an interior vapor barrier when an exterior barrier is present?

I have a wall on the first floor of my house that is very close to another building, but they are not connected. This wall has an exterior black vapor barrier in the outside and the sheathing is ...
Jason M's user avatar
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How do I insulate my basement wall to meet the R requirement

I am in the process of finishing my basement. If I read the 2021 energy codes, I need to meet a requirement of R19. Does that mean I have to build 2x6 walls.
Richar Tilton's user avatar
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How to insulate and air seal partially finished wall

I'm trying to slowly improve the energy efficiency of my house. I need to finish a 2x6 framed wall between my basement mechanical room and a poorly insulated, unheated garage (There is living space ...
kimjay's user avatar
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Bathroom fan drips. How can I stop it?

I have been fighting this bathroom fan for years. I rent but do a decent amount of upkeep and improvements as needed. I replaced the fan about a year ago. It’s a cheap nutone 80cfm fan. The bathroom ...
Austin's user avatar
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Can I install R-13 batts in 3-1/2" walls? [duplicate]

We recently took down our wood paneling and are tempted to replace the current R-7 insulation while we have the walls open. Currently hanging is fiberglass R-7 paper backed insulation that looks to be ...
Tiara's user avatar
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1 answer
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Baffle and insulation question [closed]

I'm working on finishing my attic space (getting more electric up there, heating/cooling, walls etc.). There is a full stairwell to get into the attic space. Ceiling are 8ft tall. This is a semi-DIY ...
Jozney's user avatar
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1 vote
2 answers
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Finished basement ceiling insulation advice/questions

Location: Chicago-land area Situation: Finished basement about 1500 sq ft Basement has a bathroom, washer/dryer, HVAC system, and water heater, and has heating registers down there to stabilize temp ...
David Capretto's user avatar
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1 answer
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Wall Insulation- Existing Wall [closed]

An external facing wall in my bedroom is not insulated properly and I would like to add some insulation. The wall about 12 feet wide and 8 feet tall. Blow in insulation is unappealing due to cost. Is ...
SAS2Python's user avatar
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Putting in a sub ceiling in garage to insulate and dampen sound to upstairs bedroom

I am putting in a sub ceiling with insulation and drywall. I have begun the project and it kind of suddenly hit me that this weight could be dangerous? I'm running the 2x6x9.5 ft joists from these ...
Ceiling guy's user avatar
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Rigid foam on basement walls

I am planning on installing 2" rigid foam on my basement walls to act as a vapour barrier, before framing in the 2x4 walls (AB, Canada). The rigid foam comes in 8x4 foot lengths, but my ceiling ...
Shinobii's user avatar
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Adding insulation to roof rafters, air gap and eaves

I'm adding insulation to a small shed/garage which has the same roof construction method as the main house. Gable roof, slate tiles, batons, felt and rafters. I'm adding 50mm insulation boards in ...
Fergal's user avatar
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How to Insulate/Install Moisture barrier around drain pipes in basement

finishing my basement and 2" using rigid insulation on the concrete walls for a moisture barrier/thermal break. My plan is to tape that all to my DriCore InsulArmor subfloor for a seam-less ...
Dave G's user avatar
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Loosefill insulation question [duplicate]

Does anyone know different methods on how to spread loosefill insulation without having to rent an insulation blower?
user184801's user avatar
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How to properly insulate detached wood garage? [closed]

I have a wooden detached two car garage that I would like to insulate to eventually convert into a work out space. Currently the walls appear to only be wood siding that has a few gaps in between. ...
Freddie Kendall's user avatar
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Adding insulation to a loft conversion & condensation build up concerns

I just moved into a property and I want to get some insulation added to the existing loft conversion as it gets mighty cold up there. I've had a look via the eaves and there is about 8-10cm of space ...
Alex Fox's user avatar
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1 vote
1 answer
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How can I insulate an inaccessible rim joist cavity?

I am working on insulating the area above my basement walls and under my main floor along the exterior walls. I am able to do this with no problem except the back wall, i have a 2-4 inch gap to get to ...
vandrj63's user avatar
1 vote
1 answer
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How do I clean up after an upstairs washer flood?

I've just had my upstairs washer wiggle itself away from the wall and remove the drain hose from the drain, resulting in water everywhere. The wash room is above the garage, so that's where the water ...
Stephen's user avatar
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0 votes
2 answers
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Garage fiberglass ceiling is wet

After living approximately 1 year in my new home, this October I started to insulate my garage by putting fiber glass - with the intention of putting drywall after. Couple of weeks ago I have noticed ...
Vincenzo's user avatar
1 vote
1 answer
118 views

What is this iron pipe in my attic?

In a Canadian 1950s home. In a knee wall or cubby hole. Not attached directly to the roof, but not easily moveable due to the way the pipe is constructed.
Phil's user avatar
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Can you push rockwool through a joist cavity for 10 feet without breaking the rockwool?

I'm wondering how brittle rockwool is. If I have a last 3 feet exposed in my drywall ceiling with 15 foot long joist bays, can I push the Rockwool through the rest of the 12' of joist cavity? I ...
MonkeyBonkey's user avatar
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Is this the proper way to insulate & vent shed style detached garage roof?

I have a detached garage which I am working on turning into a workshop. As part of the transformation, I would like to insulate it, finish the walls/ceiling and add a mini split for cooling and ...
Yev's user avatar
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Black mold found behind crown molding, walls and ceiling. How to remodel correctly?

I bought a 1995 manufactured home on permanent foundation, ~26’x60’ home. 2x4 exterior framing. Entire interior walls, ceiling and trim had been recently painted. Odd musty and smoker smell upon ...
Daniel's user avatar
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2 votes
2 answers
441 views

How to insulate around obstacles in basement?

I'm using my unfinished basement as a workshop, and it's really cold in there, so I want to insulate the walls, preferably with rigid board. I've watched some videos, but they don't give a lot of ...
Benjamin Evett's user avatar
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How should I insulate and block moisture in a floor over a crawl space?

Summary Planning to replace carpet in walk in closet. Pulled up padding and found 5/8" partcleboard as only subfloor. Ripped that out and have some 23/32 gp dryguard osb going in. Under the ...
meguy's user avatar
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5 votes
3 answers
3k views

Can I use Styrofoam packaging pieces as insulation?

I have a walk in closet that’s 12 feet long. The one wall is an outside wall with a high shelf and a hanger rod underneath the 12 foot length. It is very cold in this closet. Would it create a problem ...
Barbara's user avatar
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Drywall Joints sealing & Torn Insulation facing

I am a newbie and recently bought a house. We removed a portion of the drywall in the kitchen for some remodel work. I have two questions about this. I observed that at some places the insulation ...
vkg-2414's user avatar
1 vote
1 answer
54 views

Can I install Polyiso over a popcorn drywalled ceiling?

I have a mobile home with a vaulted ceiling and a thin drywall with popcorn finish. I would like to install a fire rated polyiso foam board (Mansfield CI max or Dow Thermax) on the ceiling, then ...
Phil's user avatar
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0 votes
2 answers
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Insulating copper piping running through exterior wall/foundation

I have had two water leaks caused by copper piping freezing and bursting in an exterior wall where it comes through the concrete foundation to an exterior hose bib, even after the copper pipe running ...
user181711's user avatar
1 vote
2 answers
103 views

How to best insulate a concrete ceiling in an old warehouse [closed]

We're renovating a three-story, 100-year-old brick warehouse with 14" thick concrete floors/ceilings that are heavily reinforced with rebar. The building is COLD and we would like to insulate the ...
Karin Tauscher Patton's user avatar
1 vote
1 answer
111 views

How to seal/insulate partially embedded rim joists?

First time home owner, please go easy on me haha. I purchased my home March 2023. It's a 1947 bi-level located in Minneapolis, MN. I was looking into options to air seal or insulate my rim joists. ...
Peter Bibelhausen's user avatar

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