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.

Filter by
Sorted by
Tagged with
0
votes
0answers
20 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
40 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
30 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
56 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
500 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 ...
1
vote
1answer
59 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
2answers
136 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
496 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 ...
2
votes
0answers
73 views

garage vapor barrier

I am converting my garage into a wood shop and have insulated my walls with faced R13 insulation.The ceilings have faced R13 installed with R30 unfaced additional to the R13. Do I need to install ...
1
vote
2answers
264 views

Attic Fiberglass safety?

So im in my attic installing Cat6 cable in some places. It's a yellow looking insulation (Some is sort of "loose" and some are in sheets, the loose stuff is more white-ish). The House was built in ...
0
votes
1answer
47 views

Ductless MiniSplit Install Resources

I'm installing a multizone ductless minisplit in my house. Many of the items I need have already been purchased, I have not purchased: Line Sets Nitrogen Testing Tank 410a Refrigerant I'm ...
0
votes
1answer
46 views

Should I remove 4" of cellose insulation before adding fiberglass insulation?

My attic currently has 4" of blown cellulose insulation (to the top of the 2x4 joists). I plan on sealing air leaks and adding R-38 batts. The home was built in 1977 in zone 5. Should I remove the ...
0
votes
1answer
48 views

Improve HVAC in single upstairs room with vaulted ceiling

Setup: Our house is a two-story built in 2011. We have zoned HVAC off a single unit with electronic dampers. The upstairs has three bedrooms and two bathrooms. The master bedroom is the only room ...
0
votes
1answer
54 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 ...
1
vote
1answer
54 views

How can I determine what is emitting chemical fumes in my home?

Our home is a reconstructed 1890's log home moved and rebuilt in the late 70's or early 80's. They used 1 inch thick styrofoam board in the ceiling under the pine tongue and groove. I think it is the ...
0
votes
1answer
55 views

Which insulation for gap between plasterboard and subfloor?

I have a room built under the roof on top of the garage, so eaves are directly behind the side walls. I removed the skirting boards to install the a new flooring and realized that there is a sizeable ...
5
votes
5answers
4k views

Does this look like asbestos insulation?

Found some spare bits of it in the attic, was curious what it is. Fibre glass?
0
votes
0answers
225 views

1 1/2 story upstairs bedroom very hot

So I just bought a house and discovered the upstairs was what felt like 5-10 degrees difference from the main level. I'll try and add pictures of the insulation below. It seems well done but for some ...
1
vote
0answers
64 views

What's the best method of insulating windows against solar heat?

(TL;DR at the end ;) ) I live in Western New York, and while it's pretty uncommon to reach temperatures over 95-100, it still gets pretty hot here, and we typically have 70-90% humidity on top of it. ...
2
votes
1answer
73 views

Can a ceiling fan brace/box be in direct contact with insulation?

New work. Installing a ceiling fan in unfinished basement room. Can a ceiling fan brace/box be in direct contact with batt insulation? I know recessed light housings can't, unless they're IC rated.
0
votes
1answer
72 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 ...
0
votes
5answers
222 views

Skylight Insulation

I have 2 skylights in my master bedroom and they cause the room to get much hotter than the rest of the house in warmer months. Today it is in the 90s outside. My IR thermometer shows the area just ...
1
vote
1answer
64 views

Cleaning “Builder's foam” off where it shouldn't be

I recently had my windows changed. The workers spilled what I only know as "Builder's Foam" on my wall (and floor, but I fixed that). I have worked with this material myself and I know from experience ...
0
votes
1answer
224 views

Attic Insulation in hot and humid climate

I am in central Texas and am looking to add insulation to my attic. My house is very old so I am pretty much starting from scratch as there is virtually no insulation. So far from what I have read ...
0
votes
1answer
61 views

What type of tradesman do I need if the downstairs of my house is too cold

I have bought a home and in winter the extremities of the ground floor are very cold. The original part of the building is the centre, and it has been extended in the front and the back. The main ...
1
vote
1answer
56 views

What's a good sound proofing material to fill an old aperture?

Our bedroom has a disused aperture that looks like it was once for an extractor fan. Both ends are covered with a simple plastic grille. We have serious a noise problem because of this vent. Short of ...
0
votes
4answers
2k views

Will adding a cool air return in the basement help with summer AC power usage?

Pretty much the title. I have a full basement. Part of it is unfinished and has the water heater, furnace, and washer / dryer. The other part (roughly 1/2 of the total space) is partially finished. It ...
0
votes
0answers
39 views

Do I need to insulate the joists in the floor of a converted garage?

I live in New England, and am having my current garage renovated into more heated living space. There is a floor with 2x8 joists being built about 2 feet above the garage slab, and flush with the ...
0
votes
1answer
439 views

Can I cover insulation in my attic roof with plastic or plywood?

You can see into my attic a bit there (looking from the outside of the house into the attic), and it's insulation between the rafters. It's a small storage area and I'm tired of getting the itchies ...
0
votes
1answer
50 views

Should I repair, replace, or remove damaged foundation insulation?

I live in upstate NY and my house was built in 1996 and it has the white thick foam insalation around the foundation. It looks awful and now I have bugs chewing it and building homes. Can I just ...
1
vote
1answer
102 views

Insulation over flex duct

Can R-30 insulation catch fire if placed over flex ducts? I do not have air conditioning - only heat. Thanks, Victor
1
vote
1answer
53 views

Maximally Sealing Window Air Conditioner

I have a window a/c unit (~23"w) I install into a small window (30"w) every summer. What are the most efficient materials to use to maximally seal the large & small gaps to keep the hot outdoor ...
1
vote
2answers
229 views

cold water too hot in AZ—worth it to insulate attic copper?

All of my plumbing runs through copper lines in an accessible attic in a 1960's slab-on-grade ranch style home in Phoenix, AZ where I don't need to tell you how hot the attic can get for a huge chunk ...
1
vote
1answer
312 views

Which tape to seal seams between XPS panels?

I am planning to insulate my basement walls with XPS. I'll be gluing the panels to the wall and taping the seams. However, I'm finding conflicting information on which tape to use. The most common ...
0
votes
1answer
47 views

Is it worth “piling in more insulation”?

In one area the laughable insulation in my attic looks like this: purely as a stopgap measure: is it worth simply ... get the keys to my kid's minivan and drive to Lowe's on the corner and get a ...
0
votes
2answers
60 views

In summer, should attics simply have fans or other ventilation?

The house we have in the US south seems to function in this way in summer: I know nothing about AC/insulation systems but it seems that: If there was simply airflow through the attic, it would stop ...
1
vote
3answers
111 views

Insulating that attic hatch - the type with fold-out steps

This attic hatch does have fold-out steps inside... It would be great to put a layer of insulation at the level A: unfortunately, once the steps triple-fold and you put the hatch up, the folded ...
0
votes
1answer
671 views

Can rigid foam board have an air space between it and the studs. Basement wall

I finishing a part of my basement and I want to put rigid insulation>studs>batt insulation in stud bay>drywall. I have a wall that has copper pipes, pvc pipes, and gas pipes flush to the concrete ...
0
votes
1answer
63 views

How to re-insulate space between window trim and wall?

Just took off old window mouldings (need to change them) and figure I will need to better insulate the space between the window trim and the wall. The "wall" consists of: a painted layer of thin 3mm ...
1
vote
1answer
180 views

Clarifying the in-between rafters insulation

My house is in an area which often gets -30c winter days and 30c summer days. It's shaped like this (note that ventilation holes are also the same on the other side of the house): Note that the roof ...
0
votes
0answers
32 views

Insulation in basement with plaster walls

I’m looking to finish my basement. I have a 1940’s cape cod with a poured concrete basement. The basement walls have a fairly thick layer of plaster to them, very rough looking. It’s and in good ...
1
vote
1answer
36 views

Water-Damaged Faced Insulatiion - but before install. Can I use it?

I'm working on framing a portion of my garage into a laundry room. I had an unopened package of R-13 faced insulation standing upright on the garage floor, when the garage flooded due to heavy rains. ...
0
votes
0answers
40 views

Should polyurethane sheet seams be taped?

I am going to place PUR insulation plates, the dealer recommends that each joint should be sealed off with aluminum tape, but could not say what the advantages are of doing this? Can someone please ...
0
votes
2answers
69 views

Options for Insulating around window with drywall recess

Hello wise and wonderful HI Community! I need some help. I bought a house last year and noticed horrible drafts coming from the tracks between the upper and lower window panes. I dug in today ...
0
votes
0answers
61 views

Small rental house has trouble staying cool

I live in Southern California and the heat wave has just begun. I need some assistance doing what I can with keeping my place cool. Here's a quick summary of my place: 1 bedroom,kitchen connected to ...
1
vote
0answers
79 views

Should XPS insulation not touch basement floor?

When putting up XPS insulation in a basement, prior to framing, is there a reason the insulation shouldn't go all the way to the floor? In this guide, they show the XPS resting on top of 2x4s (lying ...
0
votes
2answers
313 views

Can I use mylar sheets to keep my roof cool?

I have a flat concrete roof with brick tiles on it and a thin layer of cement plaster on top of that. The roof gets near constant sunlight during the summer days, and hence it gets very warm, enough ...
3
votes
2answers
124 views

Installing in-wall speakers in an exterior basement wall

I've been debating installing in-wall speakers on an exterior basement wall for a home cinema, and I see problems with every solution. Naive approach Cut out a section down to the concrete and ...
1
vote
2answers
511 views

Keeping a shed warm in winter and cool in summer

I live in the UK, with damp cold winters and modestly hot summers. I have a 2.4Mx2.4M (8ftx8ft) shed that I use as a woodworking workshop. I'd like to make it warmer in winter and cooler in summer. I ...
1
vote
0answers
177 views

my garage has soffit and ridge vents and I want to insulate it (southern NH)

like the thread title says: I'm located in Southern NH, allegedly we have 4 seasons although I'm having my doubts about the veracity of that (loonnng winter) I have an attached 2 car garage with a ...