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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30 views

alternate or no Insulation over heat tape

Can I operate a well pump with no pressure tank by using the breaker as a switch? I have about 10 feet of well PE black pipe from the ground in the crawl space to the utility closet (inside heated ...
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67 views

Drilling into cinder block foundation

My house has a block foundation and water issues, I have a company coming soon to install a perimeter drainage system w/ sump pump and he said he's going to install a mill sheet vapor barrier about 4" ...
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Do these insulation panels contain asbestos?

The landlord said that "it's plastic stock, left from renovation on windows" from another apartment. It doesn't look like plastic to me, but then again I don't know much (very little actually) about ...
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101 views

how to insulate attic that contains high-efficiency furnace?

We have an older home with a separate high efficiency furnace for the second floor. It sits on a floored area of the attic. We have virtually no insulation and I've gotten various recommendations ...
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94 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 ...
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64 views

Alternatives to wool pile weatherstripping for an aluminum frame door

The wool pile weatherstripping in my patio door frame is disintegrating. The bristles are just falling off on contact. Parts of of it (most likely a section that deteriorated early) had previously ...
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35 views

Keep and patch, or replace white rigid foam during basement remodel?

I'm removing old wood paneling and drywall which is glued to (what appears to be regular Styrofoam) foam board, which is glued to a cinder block basement wall. The goal is to add more insulation (2x4 ...
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53 views

Is it ok to enhance pipe insulation with fiberglass batts?

I have hot water baseboard pipes running along the inside of the knee wall attic behind my second floor bedrooms. They are covered with old pipe foam sleeves. The knee wall is insulated as a ...
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64 views

What is an acceptable temperature difference for rooms over garage vs not over garage in a new home?

I recently moved into a new construction home where there are rooms above the garage. I've read several articles about how you can add insulation, but I am trying to figure out what I should ...
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86 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 ...
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85 views

Old home, is this asbestos in the attic?

House was built in the 40s and moved in the 70s, no idea if it was reinsulated or not after being moved
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Is it OK to install insulation, with a vapor barrier, before a moisture barrier is applied to a home's OSB sheathing?

Is it acceptable to install insulation, with a vapor barrier, before a moisture barrier is applied to a house's OSB sheathing?
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84 views

What is this white sheet behind the insulation?

Was in a house this weekend with a little bit of insulation. Behind it was a white sheet that i haven’t seen before. Is it a vapor barrier?
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When can insulation against external walls be done for new construction?

Picture a new construction house where wood framing is complete and a roof has been added. How soon can insulation against external walls be added? Are there other steps that must be completed prior ...
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Is there any study or calculation on how much money I save if I buy door/window X with a certain R value vs door/window Y with a different R value?

Is there any study or calculation on how much money I save if I buy door/window X with a certain R value vs door/windows Y with a different R value? I am afraid that this whole thing with better and ...
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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 ...
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16k views

What to do with a cold corner?

I live in an apartment on the 4th floor. My bedroom has the misfortune of being in the very corner of the building - it has two outer walls. On top of that, the corner between these two walls is ...
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72 views

Potentially asbestos?

So we're doing a tear-out of the second half of our kitchen, and we came across some old batt insulation in the wall chases from the forty eight company(one of the companies sued out of business from ...
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Replacing R7 in exterior home walls

I really appreciate all the great feedback from the forum members on various questions. We are working on lots of renovations to our home that is located in Toronto, Canada. It was built in the early ...
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Can one pane of a double pane window be safely removed?

Recently I asked Is there a way to remove condensation and clean inside a double pane window? The answer appears to be "no", at least not without resorting to very dangerous chemicals. Two of the ...
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How should I insulate garage ductwork when no gap exists between ductwork and ceiling?

I currently have uninsulated HVAC ductwork running the width of my garage. There's no gap between the ducts and the plaster ceiling above it. There's also very little clearance between the ducts and ...
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42 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 ...
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1answer
44 views

With a vapor barrier installed, how critical is slashing/destroying faced insulation underneath?

After installing a vapor barrier, forgot to slash/destroy the faced batts of insulation within some wall cavities and/or ceiling areas. Am I in "OMG deep doo-doo" for not slashing the batts, or ...
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Insulating a Wall Against Unconditioned Attic Space

I'm looking for help in insulating my 1950s San Diego house. A second story was added in the 70s and a gas furnace + A/C was added about 10 years ago in the unconditioned space above the downstairs ...
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1k views

How can I improve the insulation in the lower attic space?

I live in a house with a finished attic. There's a substantial upper attic (big enough to walk around) and there are also knee walls between the upstairs rooms and the lower attic. There is ...
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2answers
71 views

What is the R value of Kapok Fiber

I'm attempting to find a green and cheap insulation for the roof of a school bus conversion I am building. Kapok is easily sourced for me as it literally grows on trees. The dimensions of the roof ...
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861 views

What type of insulation can be used near knob and tube wiring?

I have a house build in the 1920's. I recently had a HVAC system installed, and i have to insulate my actic (Unfinished). The three bedrooms and one bath on the floor below have a center ceiling ...
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4answers
17k views

Install plastic between drywall ceilings and rafters?

We are building a new house and are getting ready to install the drywall on the ceilings. We have installed a 6 mil plastic barrier on the underside of the rafters to act as an air & moisture ...
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24 views

fixing sagging insulation

I have a two story 1970s home that has basically storage rooms upstairs off the bedrooms where the roof angles down. Inside these rooms is the studs and insulation facing the exterior roof. Since ...
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51 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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33 views

Insulating a vehicle ceiling, exterior vs interior application with cork

I have a truck with a large doka (9 seater crew) cabin. This is uninsulated at the moment. I am considering options for summer and winter insulation but do not want to sacrifice head space. I ...
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2answers
74 views

Crawlspace encapsulation

This past weekend I recently had to fix the flooring of my family cottage. In a heavy-traffic side entryway, the plyboard floor was bending when you walked over it. We opened up the floor to see ...
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54 views

Do I need a moisture barrier outside my garage wall insulation?

I want to insulate my garage and drywall it , The outside walls are bare brick with 2by 4 studded walls on the inside do I have to put a plastic barrier up before I use batted insulation to keep ...
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45 views

Difference between various Radiant Barrier types

Can someone explain me the difference between radiant barrier types and which one is the best option? I am seeing products like foil, Double Insulated Metalized Mylar Double Foil Bubble Wrap. I do ...
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2answers
143 views

Restoring steel casement windows

I’m dealing with some 1930’s era steel casement windows, Tudor revival style, that are in reasonably good shape for the most part. They need some maintenance and would like some suggestions for how ...
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41 views

Easy/Cheap fix to insulating 2x4 exterior wall in Maryland

I am living in an rowhouse with exterior walls built of 2x4's. When it gets really cold in the winter - I can feel the cold coming through the wall of my bedroom when I put my hand on it. The wall ...
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407 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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Great Stuff Foam sealed gas pipe, fire safety

So I have a pipe penetration problem at the gas pipe. I hired a contractor and he decided to use great stuff to seal the gap. Would it be a fire safety problem? Thanks,
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106 views

What type and rating of insulation should be used in a basement bathroom?

I need to replace the insulation on the back and side of the bathtub. The walls face the exterior of the house (poured foundation). What type and rating should I use? I can't tell what the ...
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1answer
48 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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1answer
57 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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2answers
56 views

What’s best for attic insulation

I want to improve my attic insulation. What is the best option to use - Fiberglass batts or blowin insulation? The code says R-30, but will R-38 or higher be better option (New York area and also plan ...
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350 views

Insulating a Detached Garage Ceiling

Currently the detached garage walls are insulated with batts of insulation, however the ceiling is not, so here in Illinois, the garage is pretty much unusable most days in the winter. I use this ...
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67 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 ...
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1k views

What type of insulation should be used to deter subterranean termites?

My house's structure is made of wood and there are subterranean termites (non-formosan) in my yard and area. I am planning to excavate and insulate the slab perimeter in the interests of saving on ...
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29 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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2answers
58 views

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

Recently closed on a split-level. The majority of it is well done, but neither my wife or I were content with the basement. It was partially finished, with a closed off utility room, some hideous ...
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28 views

Air sealing vent baffles in cathedral ceiling

I am reroofing my house. I am taking the opportunity to pull up the decking above the cathedral ceiling and adding air baffles to help cool the roof and reduce ice dams. In order to accomplish this, ...
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54 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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RUST! are items more rust prone in an free standing shed than in my garage?

my garage is not heated or cooled but it seems tools dont rust there as much as in my free standing shed. why is that. can i simply cover outdoor metal items with a tarp to inhibit large % of rust ...