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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18 views

How to add insulation to ducts in hot uninsulated attic?

I have central air with ducts running through the hot, uninsulated attic (there is blown-in insulation between the joists to insulate the rooms below). Fortunately it's only about 25 feet of ductwork, ...
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Is it ok to boost finished attic kneewall insulation with rigid foam board over the batts?

Have a finished attic with fiberglass batts (poorly) installed between the kneewall studs--the batts are faced and the facing is on the inside. I want to put an airtight, taped layer of rigid ...
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46 views

How can I find all the air leaks and insulation gaps in my finished attic?

I have a finished attic which gets hot very quickly, requiring running the central AC excessively and due to the imbalance, the downstairs tends to get too cold while the finished attic is still too ...
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Metal shed/roof/ with window air conditioner/insulation foam board

I have an un insulated metal shed. Both walls and roof are metal. I bought insulation foam board for the ceiling that has the shiny foil on one side. I have a air conditioner mounted in the wall ...
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62 views

Where to place the vapor barrier in a sunroom floor

I'm looking to insulate the floor of a sun room. The room is a converted screen porch (i.e. there is free airflow under the floor). My plan was to crawl underneath, staple vapor barrier to the bottom ...
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Low profile options for insulating cathedral ceiling

I'm looking to convert an existing screened room into a sun room. Part of that process will be insulating the cathedral ceiling. Unfortunately I don't have a lot of space. Ideally I'd like to get R39 ...
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23 views

How can I get the insulation batts back up above the finished attic ceiling?

I have a finished attic. The finished room has drywall screwed directly to the roof rafters. There were insulation batts installed between rafters initially, but it's a steep slope and most of them ...
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Kenmore 465 Stove / Range with range missing a pipe and insulation exposed?

I have a Kenmore stove that's probably from either 2006 or the 90s some time; and we recently replaced all the drip pans in it; I don't know why or who, but one family members pulled a pipe out of the ...
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How to properly insulate PVC water pipes outside?

I live in Houston, and I'm trying to re-insulate my external pipes, which are a mix of PVC pipes and fittings and brass valves. Most of my fellow Houstonians use foam polyethylene insulation and duct ...
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28 views

Best way to insulate supply duct with minimal clearance

I wanted to wrap the supply side ductwork, but the return is mounted so close to it, in some spots barely 3/4 of an inch of space between them. What is the best way to insulate in this case? Supplies ...
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1880 Home with Ballon Framing - Roof Soffit Question

I have a 1880 house with balloon framing. On the 3rd top floor, the roof line extends beyond the top plates and there's a air gap at the end...I can right into my rain gutters from the inside and have ...
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How are vapor barriers, moisture barriers, and house wrap different?

I've read many discussions here and elsewhere talking about these three things with regard to insulation, energy efficiency, and siding installation. What are the differences and where are each used?
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Would insulating a basement wall with XPS and reflective insulation create a moisture problem?

I'm in Massachusetts (ICC 2015 w/ mods) and want to finish my basement walls. I'm thinking about using a combination of 2" XPS, 1x2s horizontal 24" OC, Reflectix (double reflective ...
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How could I insulate a thin hot roof and bring it to current Southern CA code?

So we started an exterior remodel today, and found that our roof construction is way more mickey mouse than I thought it was. Our house has vaulted 2nd floor ceilings through most of the 2nd floor ...
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Using Quietrock drywall AND Rockwool Sound Insulation?

How much additional noise reduction can I get by combining Rockwool sound insulation with QuietRock drywall? Or does one render the other moot? I'm looking to add some noise reduction to an unfinished ...
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What's the efficiency of extruded polystyrene foam for roof insulation?

I'm renovating a house and I'm looking to insulate it well. My question is about the roof. It's today insulated with 80mm Extruded Polystyrene Foam (EPF) panels, Styrodur. I don't know the product ...
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Is insulation on 30cm concrete wall worth it?

It is for a house in Portugal (where temperatures during the day roughly vary from 15 degrees celsius to 40 degrees celsius), where the walls of the house are 30 cm of concrete, with no insulation at ...
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Insulating basement ceiling

My basement is currently completely unfinished. Having gone through my first winter in the home (Alberta, Canada), the floor is obviously quite cold! As a cost effective way to keep the cold in the ...
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Should I use vapor barrier for a framed floor over a slab?

What to do about the vapor barrier? I am currently using a formerly unheated basement room as home office. The room is not properly insulated and rather hard to keep warm. I am thinking about ...
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Foam board sheets

I have a new tiny home shell in east texas. What's the best way to insulate it? #1. Can I use 1/2" foamular on exterior or do I need to use a foiled foam sheet? #2. Can I put more foamular ...
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Can I add foam board insulation to my tiny house to increase energy efficiency?

I have a new tiny home shell in east Texas. It's 16x40 shell with wood siding 4x8 sheets on the out side. The kind with a groove every 4 inches. The house has a weather wrap on it already. Metal roof. ...
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38 views

Basement Insulation/Vapor Barriers

Doing research prior to attempting a DIY basement finish. Never had moisture issues (sealed prior to move in) since we've been here (10yrs), walls are all below grade (no walk-outs). no insulation ...
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Are freezers afected by subfreezing temperatures, (weather)

A side-by-side refrigerator-freezer that was in a garage during the recent cold spell in Texas acted odd, the freezer became warm and everything melted. The refrigerator side did not show any ...
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adding more insulation on garage side of wall, and held in place with plastic sheeting has resulted in a moisture issue

I am closing the ceiling of my garage, and wanted to do a few things before that was completed. It's a 2 story house, and there is a shared wall between the house and the garage, on the second story. ...
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Insulation in the attic : choice between fire retardant and allergenic

This is for a house in Portugal, where most houses have no insulation. I want to insulate the house (it is quite cold in the winter). The plan is to lay down some isolation material on the floor of ...
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How should I insulate my concrete ceiling in a safe room under a concrete porch?

We have a safe room roughly 25' long x 7' wide x 10' tall. It has concrete walls with a metal ceiling and concrete covered porch above it. The room gets very cold in the winter, I suspect mostly due ...
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Can I frame and insulate over EPS panels?

My house came with 1/2 inch EPS board already attached to concrete in our basement. Instead of ripping down, I would like to frame over foam with 2x4 studs and fill with rockwool. Per code I need R13 ...
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How to install a insulation meter in panel

I want to install a fix insulation meter in a main switch board . There is lot of motors in the switch board . If there is a requirement of taking insulation we check all the motors one by one. Plz ...
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124 views

Pipes on Exterior Wall

I recently had frozen pipes in my basement. I took some drywall down to identify the location of the frozen pipes and to apply heat to thaw it. It appears the frozen section is somewhere about halfway ...
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Cold Air Between Joist and Foundation

The other day, my washing machine produced an error code indicating it was not receiving water. I checked the water supply to the washer, and the hot water line was working but not the cold. It has ...
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74 views

How can I prevent air leaks in my single-hung windows?

In our house we have regular single-hung windows which are leaking cold air. As usual, the double pane unit is encased in plastic trim. I can feel a draft coming out where the plastic has a seam with ...
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Can I reduce draft in an elevated floor with house wrap below the insulation?

My 1930 house has a large room ~(25x30) that was added on in the early 1980's without a basement nor slab. It is on top of thick concrete piers, pinned to ledge rock. On very cold days < 15f or ...
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Will insulating attached garage walls create a moisture problem?

I live in Chicago and have 50 yrs old house that has attached garage. I found out that the walls in garage does not have insulation. I am planning to open the drywall, put batt insulation and drywall ...
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How to insulate a wood garden shed to house a small 7’x7’ heated above ground therapy pool

We are having a wood shed 12’x14’ built to house a small (7’x7’) above ground heated therapy pool so we can use it year round. The shed/building is being built on a gravel pad with no wooden floor due ...
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What is this floor material consisting of soft fibrous material covered by matte black layer?

We are renovating an apartment in a house in Germany built in 1957. I am unsure what kind of floor construction I am looking at. The concrete floor is covered by a soft brown fibrous layer about 1.5 ...
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Can these windows be shuttered from light in a simple and efficient way?

I'm a very light sleeper. I cannot sleep if the room I am in is bright. Face-masks don't work for me because they give me allergies, prevent me from sleeping well, or don't match the geometry of my ...
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26 views

How to install insulation in a small space behind an existing shower?

I have a 3" wide area the height of the bathroom wall behind at the corner of an existing shower on the external wall without insulation. The space runs the full 8' height I can only reach the ...
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How are insulation R-values calculated for wall cavities of inconsistent thickness?

I'm designing a house which will have unconventional wall construction that varies in thickness. The wall cavities will be filled with dense-packed cellulose, rated at R-3.7 per inch. I want to ...
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what type of insulation for un conditioned attic

i have a cold attic space that has an interior wall into my living space. What should i have for insulation? I can only access the attic/cold side of the wall. Also, would i use a vapor barrier?
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How to find my IRC zone?

I'm replacing old insulation in a 1962 cape cod style house in the Baltimore area and trying to determine if I need vapor barrier. The more I research, the more complicated the answer becomes. The IRC ...
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26 views

Adding more insulation to an exterior wall

I am renovating my kitchen and after I removed the drywall, I have about 3" or so of open wall before I get to the R-15 faced insulation. If I wanted to add more insulation, would I leave the R-...
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Open Space with Hot Roof, best ventilation?

I just purchased a home in Minnesota, the house came with a detached garage with a living space above that we want to make livable. The lower-level is partially buried below grade. The picture ...
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Does facing fiberglass batts matter when installing from attic?

I would like to supplement some existing old woolly pellet insulation in my attic using 6" thick fiberglass batts. Since the size I need seems to only come faced, should I: Face it up (facing ...
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Replace or supplement very old attic insulation

My attic has very old insulation, which I have been told provides very little R-value. I suspect the insulation was from when the house was built in 1909. Question: Should I remove this old insulation ...
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47 views

Vapor barrier on bathroom remodel?

I live in the Pacific NorthWest in what I believe is a zone 4 marine environment. Our house was built in 1979 and is in decent but outdated shape. I'm remodeling a 5'x7'bathroom and have removed the ...
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Should I insulate under my cold water tank?

The house is 25 years old, located in South Wales, UK. Previous owners made a total mess of the attic space, taking up rolled insulation all over the place to cut holes for suspect plumbing but that's ...
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Ceiling Register Box Insulation and Airtightness - Is this correct?

I'm in the process of making all the ceiling punctures into my attic air tight and better insulated with caulk and spray foam to reduce moisture and my energy costs. However, the HVAC ceiling register ...
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New fiberglass batts near HVAC ducts

I have R19 fiberglass batts in my attic. There are large soft insulated HVAC ducts covering the batts in some places. I would like to put in new R30 on top of the R19. What is the proper way to ...
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Is this asbestos pipe insulation

I have been doing work around a house I purchased. Never even thought pipe insulation would have or could have asbestos. My home was built in 1976 and is on Long Island NY (not sure if this helps.) I ...
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80 views

Condensation forming on garage roof despite insulation

I have a condensation problem on the inside of my garage roof. I noticed it in November, lots of condensation forming on the roof but only at the back half of the garage which is slowly being ...

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