Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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.

0
votes
1answer
26 views

Should I install fiberglass batts underneath my existing blown fiberglass?

I have loose fill fiberglass insulation in my attic (picture below). I was thinking about upgrading the insulation because, from what I've read, this is one of the least effective insulation types. ...
1
vote
1answer
26 views

What kind of glue should I use for insulation to wood?

I've got an unusual DIY underway. I'm making my own billiards table (pool table) cover. I started out cutting down two 4'x8' insulation sheets to set inside of the table's bunkers. I had to use two ...
0
votes
0answers
14 views

Sand under a Liner

Can I use sand under my fire pit liner? Attached Photo. What gauge steel should I use for the liner?
0
votes
1answer
33 views

Should I replace amissing insulation over the heat tape on my water pipes?

I recently moved into a mobile home and with the temperature dropping below freezing I wanted to make sure my water line was protected. It has a electric heat tape wrapped around it with insulation. ...
0
votes
1answer
33 views

How should I insulate and block moisture inside rim joists where foamboard doens't fit?

My question is around the use of foamboards in finished basements to serve as a vapor retarder and to reduce condensation. I've already fastened foam boards against all the concrete walls, taping the ...
0
votes
0answers
36 views

How should I insulate my renovated bathroom walls?

I am currently in the process of renovating my bathroom and a portion of the walls in the bathroom are exterior. My house is an older home (1950s) and with the drywall removed you can see the black ...
0
votes
1answer
23 views

Insulation barn second floor

i have a two story barn like building that we bought from home depot and built on our property. I am living in the second story. it is not finished. what is the quickest and cheapest way to insulate
1
vote
1answer
21 views

Ceiling material to use on cold joists

Finishing off our large attic space and we went with 3" of closed-cell spray foam (hot roof application) on the slanted ceilings. My concern is heat transfer through the joists. We live in MN and ...
1
vote
2answers
53 views

I have R-13 exterior insulation around my foundation. Do I need more inside to finish the basement? [closed]

My home was constructed in 2016 with exterior insulation around the foundation (see image). They also put in this hanging batt fiberglass insulation on the inside of the walls, which seems superfluous....
0
votes
1answer
44 views

Using wool curtain in gardenhouse

We got a very nice and large piece of wool, and it would be perfect to use as a separation curtain in our small gardenhouse. Somebody (not an expert, and not from experience) told us that somehow ...
0
votes
1answer
20 views

what is good material for 100C to 130C for heat box [closed]

I am trying to design a small box (25" x 25" x 25") for an uniform heating oven. I am planning to heat around 100 C (212 F) to 130 C (266 F). I was searching for several material such as green board(&...
5
votes
3answers
3k views

Why do I have Insulation in internal wall between two rooms?

I have been carrying out a bit of DIY in my bathroom, in a new wall which was put up with my loft conversion which happened of the winter. Inside this new wall, I've found a significant quantity of ...
2
votes
0answers
26 views

Rigid foam board expansion

I’m installing extruded polystyrene rigid foam board over my exterior sheathing. I got a little behind schedule and now the temps have dropped to the 30s (Fahrenheit). Do I need to allow for the foam ...
0
votes
2answers
65 views

Will 3.5" polyiso keep my electrical cables from melting?

I am converting a room into a sauna that will frequently be very hot (100+C). It has some wiring -- a few outlets and a light, from its previous use. The insulation for electrical cables is rated up ...
0
votes
0answers
17 views

Should I seal the heel gap between my trusses with fiberglass insulation?

I have a 35'X35' shed on a concrete slab with Steel exterior and roof on 6" walls. I am preparing to blow insulation into the rafters. There is a gap from the top of the wall to the beginning of the ...
2
votes
1answer
42 views

How should I remove closed cell spray foam insulation which has shifted the framing?

We had our basement spray foamed last week and when the foam expanded it pushed out a 2foot section abound an inch from the block wall is there an easy way to remove part of that foam and push the ...
0
votes
0answers
34 views

Floor insulation & vapor barrier for an (sometimes) climate controlled shed sauna

I have an existing 10'x12' wood shed on my property that I want to convert to have a sauna, changing room and small shower inside. Climate wise I'm in the Pocono mountains of PA. The shed is built on ...
0
votes
1answer
31 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 ...
0
votes
0answers
28 views

dangers of putting both mineral wall and rigid foam insulation back to back

I am thinking of putting in thick, class A fire-rated polyiso insulation in my walls and ceiling instead of drywall. As even the thickest insulation will not completely fill the cavities, are there ...
0
votes
0answers
39 views

Basement insulation question

We have a split level home, with the basement being about 3.5 feet below grade, so there is a 3.5 ft stud wall aound the perimeter of the house and a ledge, then the above grade wall. We has some ...
1
vote
1answer
42 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 ...
0
votes
0answers
11 views

Basic insulated plasterboard vs standard plasterboard

We've taken walls back to brick. We are considering insulated plasterboard for external facing walls. Space is tight, so D&D'ing 22mm gyproc thermaline basic seems like the best option. Its ...
1
vote
1answer
30 views

Want to update insulation in knee walls. Pictures of the inside. I think it might be worth taking the old out and redoing it all, thoughts?

I purchased a house in the Metro Detroit area. 1943 built. Cape cod bungalow, pretty sure. Last winter, I had pretty bad ice dams and would like to re-insulate the knee walls before it gets too cold. ...
0
votes
1answer
16 views

Combining polyiso and mineral wool for class A fire rating

You aren't supposed to install Polyiso in your house without putting something like drywall in front of it in order to meet fire code, unless you're using something like Dow Thermax which meets fire ...
0
votes
0answers
16 views

Possible for polyiso to outgas CFCs through aluminum vapor barrier?

If I use polyiso foam board insulation in my sauna and completely cover it with aluminum vapor barrier / tape, creating a seal, will it outgas dangerous CFCs into my sauna at high temperatures? What ...
1
vote
1answer
53 views

Crawlspace Insulation Upside Down Replacement

I have an upcoming project and would appreciate any input. My crawlspace in Maryland had insulation installed upside down (face paper towards ground) and is now rotted/mildewed/falling from the ...
1
vote
1answer
35 views

How should I insulate a cement exterior wall

I've recently had to remove existing drywall and insulation in my condo in Ontario. Notwithstanding the place being built 86, what was put in place was creative at best. Removing the wall revealed ...
1
vote
1answer
57 views

Subfloor: styrofoam insulation between sleepers or strapping on top of styrofoam?

I'm building bedrooms where a basement garage used to be. The floor of the former garage is a concrete slab that I have resurfaced. My plan is to install OSB subfloor and paint it for now, probably ...
1
vote
1answer
15 views

Is a combination of sheet EPS and closed cell foam between rafters feasible as a combination?

I am in Central Texas. It gets hot, anywhere from 14-45 days over 100 degrees Fahrenheit in this area. And, it gets cold. Last February 4th it actually snowed enough for me to cross country ski on ...
3
votes
3answers
923 views

Is electrical tape enough to insulate contact that may be touching wall?

I have a 3-contact switch like this. As you can see, the switch doesn't have an OFF position, it diverts the current either between middle and left, or middle and right contacts. Had to attach it ...
0
votes
0answers
26 views

Insulation for crawl space with framed wall and foundation

I am encapsulating my crawl space, but not sure what to do with walls above the foundation. At least part of this area could have been a basement I guess, but I am needing to deal with this area due ...
0
votes
0answers
7 views

Damp Proof Membrane on suspended timber floor

I am about to start a project to install underfloor heating on the ground floor of a 1930's built UK house. The downstairs is a suspended wooden joist (50x100mm) construction with about half a metre ...
0
votes
0answers
16 views

floor insulation

I am looking for an under-floor-heat insulation. I live in a newer well insulated mobile home. I want to install electric floor heating cable on top of my existing sub-floor in the main living area ...
0
votes
1answer
23 views

Should I install radiant-barrier insulation in a walk-up attic roof in Pennsylvania?

I have a walk-up unfinished attic in an old ranch house in Pennsylvania, where we see summer temperatures over 100F and winter temperatures well below freezing. Because there is planking over the ...
2
votes
2answers
83 views

How can I protect this plumbing in an exterior wall from freezing?

We're converting an old bathroom addition in our house to be a utility/laundry room. The bathroom wasn't properly vented or sealed, so we are completely gutting the room to deal with mold and mouse ...
0
votes
0answers
26 views

Flat roof, polyurethane sprayed ceiling, holes in a air and vapour barrier

Ok guys, I really made a mess. I hired someone to spray my flat roof garage. I was going to put rockwool, but after researching those issues with flat roofs, i choose SPF closed cell. But it's not ...
0
votes
3answers
98 views

Garage remodel: can I leave garage door in and put an insulated wall in front?

doing a garage remodel and wondering how best to keep the garage door on facade and still be able to have A/C in the garage? I live in hot and humid south Texas. Is this a ridiculous solution to ...
0
votes
1answer
22 views

Installing insulation board in basement to control moisture

I just had a basement waterproofing job done and it is doing an awesome job relieving pressure and keeping the basement flood-free (we just had a very large amount of rain here in central PA and it ...
0
votes
1answer
35 views

Are there insulated covers available for attic fans?

I have an attic fan that leaks a lot of attic air down to the living area. Are there insulated covers that can be placed on the underside, living area side of the fan that can insulate from the attic? ...
1
vote
2answers
41 views

Is it going to be worth replacing bat insulation with rigid foam between bedroom and garage?

I have the classic problem of two bedrooms above a garage that are too hot in the summer. In the winter it can be cooler upstairs than the rest of the house but not as much as a temperature difference ...
0
votes
0answers
57 views

Oven Insulation Falling Out

I recently moved into a new place. It has an old whirlpool oven. I'm not quite sure what my roommates did, but it seems the door has split at the seam, and the insulation is falling out. (Picture ...
0
votes
0answers
11 views

Laying underfloor heating on an uninsulated concrete slab

I have a 1970s house, which I am extending/refurbishing. This will include ripping out the existing, 40 year old central heating and moving the boiler location, etc. I was hoping to put in some ...
1
vote
3answers
35 views

Insulate pipes in closet

The previous homeowners ran the plumbing for the upstairs bathroom through one of the downstair bedroom closest. They actually built wire shelving around them. Obviously, when using the bathroom ...
0
votes
0answers
17 views

Could I use perlite under floor heating foam panels?

Context: I want to install an in-floor water based heating system in an apartment on a higher floor. As such, there are 2 problems: I cannot afford to have 2 layers of screed (because I need ...
0
votes
1answer
17 views

3 season room vent and insulation questions

I am building a unheated 3 season room in northern Wisconsin. I have insulated the floor with rigid foam blueboard. I plan on insulating the ceiling and walls as well. I have a 4/12 pitch gable roof ...
2
votes
2answers
190 views

Any reason not to use Tyvek to cover exposed insulation?

I have exposed insulation in my garage and the water heater room that is fiberglass and I don't want my kids touching the stuff and playing with it. I am planning on covering it with Tyvek. Is there ...
0
votes
0answers
89 views

How to deal with shallow exterior walls (re-wiring, replacing baseboard heaters, adding insulation)?

I recently began a re-wiring project in a part of our 1950s home. The house has what I guess is a limestone block exterior. Upon taking the paneling/drywall off of the exterior walls, we learned that ...
1
vote
1answer
33 views

How to apply rigid foam insulation to foundation with epoxy plugs?

The previous owners of our home did a foundation repair to fix two large cracks about 10 years ago (it is covered by a lifetime warranty). The repair was very successful, but the epoxy plugs remain. ...
0
votes
1answer
31 views

Before blowing in wall insulation, is it better to remove old rock wool insulation?

We're going to blow in fiberglass insulation to improve the exterior walls we haven't had an opportunity to upgrade—after ten years of remodeling projects we've modernized about 60% of the walls....
0
votes
0answers
138 views

Spray foam insulation in basement without vapor barrier [Michigan]

I am finishing a part of my small basement and recently had my framing inspection (passed) and was told it needed to be insulated to a minimum of R10 and be inspected. That's fine, but after some back ...