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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7
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4answers
675 views

How to properly insulate bedroom

I live in an 80-100 year old house (not sure of exact age...my great grandfather built it, and it has been passed down for a few generations). He built it out of whatever was cheap at the time, so in ...
6
votes
1answer
612 views

Venting the attic space during summer to cool the house

The air in my attic gets superheated during summer, from the sun baking the (clay? terracotta?) roof tiles (I live in Sydney, Australia). I have good ceiling insulation, and even put in some sarking ...
0
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0answers
200 views

Is it safe to fill in or insulate the space in my walls around my fireplace flum?

Moved into a new home and I noticed something about my fireplace. I have a large brick enclosure that surrounds my wood burning fireplace and when I was up in the attic I noticed that the space ...
1
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1answer
61 views

When to use EPS instead of XPS (aka Styrodur [TM] and Styropor [TM]) for insulation?

What are the pros and cons of expanded polystyrene foam (EPS) (known as BASF Trademark Styropor) and extruded polystyrene foam (XPS) (known as BASF Trademark Styrodur) cards for thermal insulation ...
2
votes
2answers
492 views

How should I insulate this basement wall?

I've been doing a lot of reading. I live in Maryland, not particularly cold. We have an 8 foot ceiling in the basement which is poured concrete built in 1973. Only about a foot is above grade. I've ...
2
votes
1answer
110 views

What type of insulation can I use to insulate around my furnace exhaust?

I've got a cold breeze blowing through my basement, originating from where the furnace exhaust turns vertical. What type of insulation can I stuff in around the exhaust, to stop the cold air? This ...
0
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0answers
37 views

Minimum covering of brick wall for insulation purposes

There is a brick wall in our condo that is part of the exterior building that was never meant to be used as an interior wall. We were hoping to insulate it and we saw recommendations for using XPS ...
0
votes
1answer
74 views

Help translate terminology relating to flat roof construction

I just bought a house which had an extension done 12 years ago. I am about to do some work in this area and want to understand what has been done before. Below is a screen shot of the bits of the ...
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1answer
93 views

Add blown in insulation by hand

I have a few small areas in my attic that don't have sufficient insulation. The insulation already in place is blown-in. How practical is it to fluff up blow-in insulation and deposit it by hand in ...
26
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4answers
5k views

Should I agree to have more insulation added to my attic?

I have a 6 year old home with about 12 inches (R-30) of blown-in insulation in the attic. Recently door-to-door sales representatives for an insulation company offered a free inspection and quote to ...
0
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1answer
64 views

should i remove trim before caulking window

For weatherization purposes, is it worth removing the trim around windows (and sliding doors, etc) and filling the gaps behind the trim with spray foam (or perhaps caulk?), or is it acceptable simply ...
3
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3answers
2k views

Should I replace old blow in attic insulation with new roll out insulation?

I have attic filled with old grey blow in insulation. I estimate it to be 20-30 years old. I suspect that it causes a lot of dust in a house. Plus any work in attic would stir it and some will end up ...
3
votes
2answers
3k views

Should I cover a skylight well from the inside?

I made the mistake of having a Velux skylight installed in my bedroom. The installation was done by pros, both inside and out, and it has never leaked through 2 hurricanes. The installation was done ...
1
vote
2answers
93 views

Will blown in insulation help in this situation?

I'm in the process of renovation of a 1945 house. Originally built with a flat roof, tar and gravel. At some point a gable roof was constructed over the original flat roof. Space between the ceilings ...
1
vote
1answer
148 views

What to do first in a house with poor thermal performance and high energy bills

I just moved into a house and am a little bit disappointed in its thermal performance so far. It's winter and cold outside, and the furnace heats the house up pretty quickly, but then the house gets ...
0
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0answers
87 views

How can I prevent my garage soffit vents from pulling in sewer vent smells?

My garage has a ceiling with fiberglass insulation over plastic air spacers leading to vents under the roof shingles. There is no plywood or drywall over the insulation. The walls are insulated and ...
0
votes
1answer
83 views

Should I remove, or work around dividing basement walls?

The basement of my house is bare concrete floor with bare concrete block walls. I'm in Canada and would like to (and should) insulate these walls, at least the above-grade portion, which is about ...
2
votes
3answers
119 views

Will removing the insulation from an unfinished basement cause it to be a lot colder?

We live in upstate NY and the house has an unfinished basement. It's waterproofed with cinder block walls and a concrete floor. There is no framing, no drywall. However someone put up this hanging ...
1
vote
1answer
67 views

Covering insulation in the garage

In my garage, the owners put insulation between the studs to insulate, but didn't cover one of the walls with sheet rock. It's just a wall of insulation that is starting to fall out. Can I put ...
5
votes
3answers
3k views

What material should I use to insulate floor over a bumpout?

My dining room has part of it bumped out about 2 feet overhanging from the foundation. The floor over this overhanging part gets cold in winter and I'm thinking about insulating below it. I've done ...
3
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2answers
2k views

Can I use Rigid Foam Insulation instead of fiber insulation?

I have a question: Can I use Rigid Foam Insulation instead of fiber insulation on outside walls from the inside of the house?
1
vote
1answer
49 views

How to insulate slab that's been extended?

I bought a house built on a concrete slab on grade. It's an older house, so no part of the slab was insulated. At some point in the past, previous owners decided to pour concrete around the entire ...
0
votes
2answers
127 views

Crawl Space Encapsulation Question

I live in Georgia (around the Atlanta area) and recently discovered mold in the crawl space of my home (I plan to have the mold professionally removed). My crawl space is about 30' by 15' (4' to 15' ...
2
votes
3answers
17k views

Should I install a vapour barrier if I'm using rigid foam insulation?

I'm re-insulating a room in my house from the inside. I've read that polyisocyanurate (polyiso) rigid foam insulation is the best R-value, so I plan on using that. Details: The house was built in ...
2
votes
3answers
97 views

mold problem in basement

I had some insulation put on half my basement wall. Since then I have been having a problem with mold.I know my basement walls leak. Could wet insulation cause mold? If so is it bad mold. Alls I know ...
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votes
4answers
2k views

How effective are outdoor foam faucet covers to prevent freezing?

Everyone seems to suggest using those styrofoam faucet covers to help prevent the pipes associated with the fixture from freezing. They're cheap so I have them anyway (plus I'm not in a hard ...
3
votes
2answers
1k views

Do I need to replace soaking wet insulation resulting from a plugged A/C drain?

I had a company install an A/C evaporator unit on my existing heating system. A plugged drain caused the plastic pan inside the evaporator to overflow with water, which then ran out through the metal ...
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vote
1answer
355 views

Can you remove a tin roof and install insulation and re-attach the tin roof?

Hello from Hobart Tasmania. I have purchased 1930's weatherboard cottage with a tin roof. The roof is insulated in the main part of the house (i.e., in the attic) but the additions on the house are ...
3
votes
3answers
8k views

Should I drywall and/or insulate my garage wall?

I'm in the process of a few projects in the garage, including raising the ceiling and insulating with spray foam. This has left me with a fair amount of leftover fiberglass batts. There is a room ...
16
votes
5answers
3k views

How can I insulate my garage door?

Over the past year I've been converting our integrated garage so that it's a usage space. I've painted the walls, got lighting, power and water connected (To allow for a washing machine to be ...
1
vote
3answers
2k views

Can the blanket Insulation in my basement be left in place when refinishing?

I'm thinking about finishing my basement. It currently has the blanket insulation that the builder installed when we built the house last year. I'm unfamiliar with this product. Is it meant to be used ...
1
vote
2answers
156 views

Preventing a frozen pipe on an extreme weather night

Last week, we had a night that got down to -18F. In the middle of the night, the cold-water pipe going to the kitchen sink froze (but luckily did not burst). After some investigation, it turns out ...
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2answers
199 views

Heating issues with slab foundation 50 year old home

I put a new furnace in (97% efficiency) because this home is so cold on the floors that my feet are cold anywhere I walk. Now have heat vents in ceiling but not helping any. Always cold, especially ...
0
votes
2answers
133 views

Insulation to condition attic space

I have a two story 1916 foursquare home in Ohio with spacious attic and basement. Before I purchased it, the HVAC system was redone by installing two independent furnaces/blowers (one in the attic and ...
2
votes
1answer
183 views

Why does my house feel colder in one area after installing blown cellulose insulation?

I recently insulated my flat roof with blown cellulose insulation. I installed two vents on the roof as well. The house used to warm up well at 72°F. In order for our bedroom to be warm we have to ...
0
votes
0answers
151 views

What thickness Styrofoam should be used to insulate a toilet tank?

So, based on my question here, I like the idea of insulating the inside of the toilet using Styrofoam because it seems more interesting/fun than installing a mixing valve. I plan to use silicone caulk ...
6
votes
3answers
4k views

What are the pros and cons of a vented vs unvented crawl space?

I find it very confusing to read and hear conflicting advice on crawl space: vent vs air seal, different ways to do insulation, vapor barriers vs not, etc. Mine currently has some moisture and has ...
2
votes
3answers
907 views

Vented vs unvented crawl space

I've asked this question before: Vented vs unvented crawl space However, now that I'm going to get air conditioning the question comes back again and again people seem to have different opinions. ...
1
vote
1answer
1k views

Should I install a vapor barrier on the bottom of my garage ceiling?

I have a house that has a garage below the main floor. The house is built into a hill, and so the entry way, the basement, and the garage are all on the same level, and the entry way has a stair case ...
0
votes
2answers
173 views

Can I sweep blown insulation to one side and replace with fiberglass batts?

I noticed my attic blown in insulation is rather thin on one side. Rather than buying enough to cover the whole area, I was thinking of just pushing or brooming the blown in insulation toward the ...
1
vote
1answer
169 views

Stop heat loss through unused chimney duct

We had a 10 inch diameter metal chimney duct running from the basement to the roof. After replacing the furnace with a direct vent one it was no longer used. Cue more renovations and the section on ...
0
votes
4answers
88 views

What could cause a temperature variance between our kitchen and the rest of the house?

Our newly remodeled kitchen holds a temperature that averages about 5 degrees cooler than the remainder of the house. The house thermostat is set at 70 degrees, and the kitchen has been as low as 63. ...
8
votes
2answers
1k views

Should I insulate an attic that's over an open porch?

I have a 6ft (approx. 2m) wide porch at the front of my house. The space above the porch opens into the attic, like this: I'm adding insulation -- R-38 fiberglass batting -- in the attic; do I ...
0
votes
0answers
48 views

Can my gas oven safely be used with damaged insulation?

I have a Caloric RSP665-04 stove oven - gas - and the insulation around the oven has been damaged by vermin. The vermin are gone. Can the oven be used safely with damaged insulation?
2
votes
2answers
128 views

spray foam personal protection

I have a closet in the master bedroom of my home that is on an exterior wall. Unfortunately there's no insulation on the back wall of the closet and so a lot of heat escapes. We keep the closet door ...
0
votes
1answer
2k views

Should I block or insulate my air vents for the winter?

I live in a house which consists of a 17 year old extension on a 40 something year old cottage. The two main bedrooms are the only rooms in the house with air vents. They are also two of the coldest ...
0
votes
1answer
128 views

Legal requirements regarding 100% asbestos duct work [closed]

I am renting a condo. After starting the heater, dusty air came out of the registers, so I called out a company to clean the ducts. They verified the ducts are 100% asbestos and cannot be cleaned. ...
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2answers
533 views

What can I use to fill a 6-10mm gap between ceiling and front door structure?

I live in a 1930s house with a small, open porch (as in no external door) in front of my main UPVC front door. Not long ago, the original lath and plaster ceiling in the hallway fell down quite ...
2
votes
2answers
131 views

How can I reduce how much a flat roof heats my house?

My flat roof is insulated with wool, but still it's heating up my room considerably. The situation is much better in the rest of the house. Any ideas how to do a quick fix? The roof is currently ...
0
votes
0answers
71 views

Can a false ceiling improve insulation?

My new house has a very small kitchen which is actually an extension of the house with its own roof. I suspect its roof insulation is old and not effective, because this kitchen is quite cold (12 ...