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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cooling and heating

We have A RASTRA built homeuilt in 2007, we purchased two years ago. We purchased a new HVAC system, all new windows and slider, but it is still super hot in the summer and cold in the winter, ...
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17 views

Can I leave Roxul Safe'n'Sound insulation exposed in a furnace room?

Hopefully someone has experience with this insulation. We are finishing off our basement. We have one long interior wall that will separate a family room from a furnace/storage room. The family ...
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31 views

noise vibration happening everyday except saturday night

A few months ago, a low bass noise started and vibrates slightly the house. It started not too loud and since 2 weeks it got louder and constant except Saturday night. It does not let me sleep as ...
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9 views

How to install rigid foam installation w/radiant barrier under a cathedral ceiling?

I'm in the process of insulating my shed-turned-office. I've installed typical fiberglass insulation in the walls, and currently have some 8x4 sheets of rigid foam insulation tacked to the bottom of ...
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1answer
14 views

Spray to keep blown-in cellulose insulation from drifting?

I have a hip-roofed garrison colonial in New England, with blown-in cellulose. I have two whole-house fans ("half-house fans"?), and to give enough attic venting I have continuous soffit vents on all ...
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1answer
19 views

Interior vs. exterior A/C insulation

I recently got a new central a/c system with ducts included. PROBLEM: The ducts had interior insulation that gave off maple syrup odor. The contractor replaced the ducts with more interior insulation,...
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1answer
21 views

Roof Ventilation and Insulation - Midwest - Gable and Ridge vents only, no soffit vents

I have a 1920's home in Ohio, and have NO soffit venting in the house. There are 2 gable vents, with one small temp-controlled fan (set to turn on ~95 F or higher). There is also a ridge vent. The ...
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2answers
22 views

Do I need a moisture barrier when insulating a metal roof with compressed Styrofoam?

I have a cabin with a metal roof and plywood underlay and want to use compressed Styrofoam to insulate between the rafters. Do I need a moisture barrier and how would I install this?
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25 views

New crawl space fiberglass insulation - Strong odor

We just had fiberglass batt insulation installed in the crawl space under our house. There is a strong odor coming from the crawl space that was not there this morning before the work was done. I've ...
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1answer
46 views

Should I cover area where ceiling once was?

I'm in the process of converting a 10'x11' bedroom into a master bathroom. I plan on removing the ceiling soon and it will be replaced when the drywallers come in a month or two. My question is, ...
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1answer
73 views

How should I insulate my shed to avoid mold and mildew?

I'm having a 16 by 12' shed built on-site because of difficulties getting down my driveway. It's to be a woodworking shop to build small furniture in. I live in Beaufort SC. It will have cement lap ...
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2answers
67 views

Is exposed Roxul insulation safe?

My basement is not occupied and I would like to put Roxul insulation against the windows so it adds a bit more insulation in the winter. The material I plan to use is Roxul, my question is would it be ...
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17 views

Applicability of cellular shades in a sunroom

I'm trying to keep my sunroom/solarium with a sloping ceiling cooler in the summer and warmer in the winter. Cellular shades seem like a good approach, but hard data is tough to find on the web - I've ...
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1answer
14 views

Attach XPS to back of stud framing?

In the basement that I'm finishing I have an irregular, rough stone foundation wall, pretty dry. I'll use 1" XPS foam insulation, then drywall. Can I build the framing on the floor, attach the XPS to ...
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1answer
67 views

How to insulate flat part of attic ceiling?

I have a large (860 sq. ft.) attic that is uninsulated. I'm planning a project now to turn this into a TV room, so I'll need to insulate, run electrical, put up drywall, etc. An insulation company ...
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1answer
43 views

Foam board insulation over drywall

Guys I am living in a 500 sq ft apartment built in the 1950's and it has a south facing wall. I run the 10000 BTU AC almost 24/7 and in the afternoons the wall is very warm if not hot to the touch on ...
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1answer
25 views

How to clean insulation foam residue off metal

How can I clean insulation foam ("Great Stuff" from Home Depot) off sheet metal ?
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1answer
47 views

What should I use to seal the hole where my central air enters the house?

Wood foundation house with vinyl siding. The hole that was made to allow the lines for my central air conditioner to enter the house is basically wide open - the silicone/caulking that was around the ...
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4answers
48 views

Can't friction fit insulation

I have interior walls that are 24OC and I'm insulating them with 15.5 OC Denim/Cotton batts (they don't make a 23/24" version of this insulation) Because they're interior, normally a friction fit ...
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44 views

help with improving HVAC performance on the second floor of an old house

I'm hoping some of you can offer some advice on how best to add a second AC in our home -- or on whether we should look for a different solution. I should say upfront that I've done a lot of reading ...
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2answers
51 views

Is garage door insulation beneficial in South Florida?

I'm in South Florida and I have a west exposed garage door. The garage door is metal (possibly aluminum). The garage is not air conditioned. There is insulation between the house and the garage. There ...
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1answer
54 views

How can i stop heat

I live in a shop with my boyfriend, upstairs like a loft. We put up installations. We have an air conditioner running all day, but the room still gets too hot. No windows, just one huge door. What ...
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4answers
127 views

How can I add thermal mass to my house?

We're part of a real-time pricing program with our electric utility company, and a good strategy for offsetting electricity use during peak demand times is to pre-cool the house. The more thermal ...
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0answers
34 views

Can I install batts under rafters in partially obstructed knee wall space?

I have an unconditioned knee wall space. I wish to condition it but am faced with a small dilemma. My concern is: can I install fiberglass against the rafters (assuming I have baffles), if the ...
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1answer
28 views

How to prevent moisture from ruining a climate-controlled wooden outbuilding

We are having a 16 x 24 x 8 wooden outbuilding built. We are making a home gym that will have a cooling/heating unit for climate control. We are worried about moisture causing damage. Looking ...
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2answers
80 views

Mouse coming through gap around gas pipe

I found some mouse droppings in a cabinet yesterday, I'm not very handy but best I can tell is the following - There is a weep hole outside, which is maybe 1 centimeter wide wide, and it seems the ...
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1answer
42 views

What to do with cinder block holes made for electrical boxes?

The previous owners (flippers) left a surprise behind the drywall in my basement, and it was not just the absence of insulation. What is the best way to work with these holes? I want to replace the ...
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3answers
55 views

Reversing an inswing door to an outswing door? [duplicate]

I about to tear out and rebuild a portion of an exterior wall in which I will be installing a door, is it possible since it's new construction to purchase and inswing door and convert it to an ...
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25 views

How to repair exposed exterior foundation insulation?

Thanks for checking this question. New to owning a home, and new to stack exchange. I do not know where to begin and I do not know what "terms" to use when googling. Any tips/ideas how to repair or ...
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2answers
45 views

Is it a good idea to cap fiberglass batts with blown cellulose?

I currently have fiberglass batt insulation of about 6 inches (in some spots less than that closer to 3 inches) due to a cleanout necessitated by rodent activity which has been hopefully remedied. I ...
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1answer
23 views

Skylight insulation preventing heat gain

I have 6 - 4'x8' skylights in my showroom roof. its great for the winter but in the summer it radiates heat and glare into my showroom challenging my AC. I have had shade clothe as a cover which ...
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1answer
50 views

How Much Attic Insulation? (R-value vs Ceiling Bowing)

I'm preparing to insulate my attic and need to know how much is necessary and how much weight the ceiling can support. I live in San Diego (mild/warm climate). The house was built in 1969. ...
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49 views

Creating 1" Air Gap between foundation wall and fiberglass batts

We just bought a house in Calgary, AB, Canada and noticed that the basement is below grade and is insulated with fiberglass batts. There is no drywall at the moment; hence, I have access to the vapor ...
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3answers
109 views

How should I insulate my workshop

I have a 20x14' workshop in my backyard. When I had it build, I had the installer place rigid insulation form under the concrete slab but everything else was not insulated. Since then, I've ...
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2answers
176 views

Is insulation around a dryer vent hose safe?

I live in an old apartment which does not have laundry, or even laundry hookups. Since I despise laundromats, I took it upon myself to get a portable washer which connects to a sink, and a portable ...
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2answers
44 views

Mounting exterior shutters on deeply recessed windows

I want to mount shutters on my 1930's house, but since we've had it insulated with polystyrene, the recess is 7 inches. That would need a huge offset hinge!! The windows are metal-cased woodframed ...
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30 views

Is silica gel used for insulation in walls/floors/ceilings?

Silica gel has great insulating properties (video). Is it used for home insulation? If yes, which products are available?
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6answers
2k views

Wind from kitchen sink drainage pipe

We live on a windy coast of North Sea. High wind is a norm here. One of the problems I face with the wind: it comes out from kitchen sink drainage pipe. If it is blowy outside, you can feel a draft ...
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38 views

Installing moisture/weather barriers around home/ doors and windows

What is the proper way to installed moisture/weather barrier around doors and windows in southern Louisiana?
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60 views

Asbestos? What do you think?

I originally thought so, but now I'm not so sure. Thoughts? It was located around HVAC vents.
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1answer
87 views

Vented soffit under bay window

Background: A bay window has been having ice dam issues for the past couple of years. I think the water is coming in through the space between the gutter and the fascia. That space is just on the ...
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1answer
30 views

Should I use faced or unfaced insulation in a utility room area?

I'm trying to keep my unconditioned utility room from being so darn cold and hot during the year, and to keep the condensation line from freezing during the winter. I figured insulating the area ...
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2answers
115 views

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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1answer
31 views

Mending plastic sheeting behind sheetrock

My house was built around 2000, and seems to have plastic sheeting behind the sheetrock (I'm unsure what thickness plastic was used and what type of plastic; is there some sort of standard?) My house ...
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3answers
76 views

How to block airflow under an interior door over carpet

I have an air conditioned bedroom. I'd like to prevent heat from entering thru the door. I got door seals for the sides the top of the door, but I can't figure out a good solution for the bottom of ...
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2answers
36 views

Opening in dropped ceiling causes room to get warm

I've moved into a new home last year. One attached room is a workshop with a drop ceiling and it was comfortable at around 70 degrees last summer with the air conditioning. This year, I moved a piece ...
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2answers
53 views

How to insulate already-existing stud walls along block foundation

My new (to me) house has a 60-year-old block foundation. The previous owners did little to no insulating in the basement. However, they started to finish a bedroom down there, and got as far as ...
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2answers
119 views

What is the proper way to perform work in an attic? (UPDATED)

For an attic with rolled fiberglass insulation, what is the proper way to perform work in the attic? Is it okay to just walk on top of the insulation, stepping where there are beams underneath it? ...
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20 views

Under-floor Insulation in crawl space?

We just bought a single story house, pier and beam at grade level over 36" vented crawl space. The house is located in the Portland, OR area, was built in 1972, and never had vapor barrier or floor ...
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2answers
48 views

Adding insulation in a finished ceiling with no access

I live in a condo that the builder decided not to put insulation between the different levels. I don't own the condo above me. With hardwood floors and no insulation it's very noisy. My goal is ...