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Questions tagged [basement-insulation]

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Insulating above suspended basement ceiling

I've got a basement room that is not connected to the rest of the basement, is not heated and has poor insulation. Our living room is right above that basement room. The ceiling/floor between the ...
Johannes Bauer's user avatar
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Gap between Rigid Foam Boards and Wall Framing (About 2 inches)

I am currently finishing my basement. I will be putting 1" rigid foam on the concrete wall of my basement and will have wall framing about 2 inches away from it. Is there a code or best practice ...
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Condensation on spray foam in basement

I am in the progress of having a home built and we are presently at drywall stage so humidity is fairly high in the house. Our 6’ concrete crawl space will be heated. We have two construction heaters ...
Dave's user avatar
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Better Strategy: Add more HVAC Registers or fully insulate walls?

I have a fairly cold basement, two rooms specifically where there's about a 6 degrees C difference from set point. Basement is fully finished, built in 2007 and back then, half insulated walls were a ...
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Can you push rockwool through a joist cavity for 10 feet without breaking the rockwool?

I'm wondering how brittle rockwool is. If I have a last 3 feet exposed in my drywall ceiling with 15 foot long joist bays, can I push the Rockwool through the rest of the 12' of joist cavity? I ...
MonkeyBonkey's user avatar
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2 votes
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How to insulate around obstacles in basement?

I'm using my unfinished basement as a workshop, and it's really cold in there, so I want to insulate the walls, preferably with rigid board. I've watched some videos, but they don't give a lot of ...
Benjamin Evett's user avatar
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3 answers
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Should the ceiling of a basement be insulated? [duplicate]

I have a basement, which is currently only used as storage and has no heating. I want to remodel this to be a liveable place, i.e. heated. To have a sensible heating output, of course I want to ...
dirkk's user avatar
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Is my furnace undersized? [closed]

I have a GMVC95070CX4 furnace. Currently, it is extremely cold weather (outdoor temp. -17). I have been experiencing poor heating and overnight . My house is 2975 sq ft. and I have a 5 ton AC system ...
Joshua K's user avatar
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Insulation in partially finished basement (2yo home)

I am in the process of finishing the basement in my 2-year old home. I live in Wisconsin, and our basement has insulation already - 1” foam board on the exterior of the concrete foundation (I believe ...
Jason's user avatar
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Fill top of concrete block wall?

I'm planning on adding rigid foam to insulate my basement walls. The walls are hollow cinder block walls. Should I fill the tops with spray foam?
EricBuzz's user avatar
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Framing basement wall against blanket wrap insulation in tight corner

My house, located in SE Michigan, was built in 2012 and basement left unfinished by the builder. The basement is insulated with a wall wrap insulation blanket that is rated at R-11. The blanket is ...
Ellis Valentiner's user avatar
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Insulating Rim Joists Missouri Zone 4 (cold winters and humid summers)

Basement currently has R13 batt insulation installed in rim joist. I was planning on cutting foam board pieces between each joist and spray foam in the nooks. My question is, should I remove the ...
dudewheresmybasement's user avatar
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Can I insulate main floorboards overhead hvac/ducts in basement?

My Hvac is in unfinished basement and part of it is crawl space which is rock. Built 1900. Is it okay to insulate my exposed floor boards of main house? Which is the ceiling of hvac/ducts/basement. No ...
Gena's user avatar
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Pipes keep freezing

Edited to add pics. I live in an old home, built in 1919. At some point before I bought the home, there was an addition that added a bathroom and three seasons porch. The original foundation is stone, ...
Kael's user avatar
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How do I properly finish basement without framing?

Here is the issue: we have an unfinished laundry room and an unfinished closet. I would like to finish both of them. We are in a wet/moisture climate (Wisconsin). I am trying to do this without ...
Patrick's user avatar
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1 answer
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Can GreatStuff "Pro" cans be layered to achieve the same thickness as "Big Gap Filler?"

all! For some reason Great Stuff offers all of their cans in Pro style, but not the Big Gap Filler. I have 3"-ish gap between a base plate and a floor joist in the basement that has very little ...
Zoinks's user avatar
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How to properly finish basement walls with an indoor waterproofing membrane?

The house I moved into has an ~1800 sq. ft. unfinished basement which has been waterproofed on the inside, halfway up the walls all around it, taped to insulation put on the upper half like this: I ...
ACanadianCoder's user avatar
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Insulation for 1920s New England home with stucco siding

I have an old 1920s home with stucco exterior siding, and I've been having work done to improve insulation. Mostly so far this has involved insulating the attic, which also involved air sealing it. I ...
shadow77624's user avatar
-1 votes
1 answer
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Vapor barrier for cantilevered kitchen idea

Hi, all! So I have this weird kitchen sitch, where it's cantilevered, and the back roughly 2-3 feet are hanging outside of the house. It's a dumb design, but what're ya gonna do?! I had to have mold ...
Zoinks's user avatar
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How should I finish this basement wall?

House built in 1970 in climate zone 3. These basement walls were apparently finished twice, the second time with drywall and originally with just wood against the concrete blocks with plaster as ...
Ethan's user avatar
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Can I use XPS insulation over poly sheet foundation waterproofing?

I recently had an internal perimeter French drain to sump installed along with a vapor barrier that directs water down into the French drain. Now I need to frame and get walls up. The piece I am ...
Garrett999111's user avatar
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Insulating basement foundation walls with partial interior walls

A previous owner seemed to have fun with the basement (although I'm guessing at the order): the basement had previously been finished by building framing just inside the foundation walls and then ...
conman's user avatar
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Can I un-insulate my basement quickly, and refinish it slowly over time?

I live in MN, so, a very northern climate. The previous owners of my home insulated the belowground basement poorly. It is air conditioned and heated, but insulated with 2in fiberglass bats and wood ...
Nicholas H's user avatar
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1 answer
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insulation material condition

Recently I needed to replace a drywall sheet in my garage, the wall is between garage and basement, so it is insulated. However I found that the insulation material got black down to the floor, I ...
Mark's user avatar
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1 vote
2 answers
493 views

Framing small basement wall, but stairs don't leave space for foam insulation

I'm working on finishing my basement, and I'm not sure what the best approach is for framing this short section of wall so that the stair drywall transitions smoothly into the basement wall. This ...
agscala's user avatar
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1 vote
1 answer
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Insulating a basement roof

Not sure if "basement roof" is the right term for this... My houses concrete foundation has a small extension, which sticks roughly 2-3 feet out from the rest of the foundation for a space ...
yoozer8's user avatar
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1 vote
2 answers
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Basement Insulation Advice

We have a basement kitchen which was dug out about 25 years ago and wasn't insulated. Behind the kitchen units there is a void up to the retaining wall on one side and an external wall on the other. I'...
Griff's user avatar
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1 vote
1 answer
249 views

Can rigid foam insulation board be installed on wet walls?

In the middle of a room addition; block foundation crawl space just built. I was planning on installing rigid foam board to the interior walls before the framing begins by using a powder activated ...
Evil Elf's user avatar
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3 votes
2 answers
2k views

Should I run vapor barrier across the ceiling in a basement?

I'm currently working on finishing my basement. Right now I'm working finishing up the insulation and am getting ready to install a plastic vapor barrier. Since I live in Massachusetts which is a ...
user2704238's user avatar
1 vote
0 answers
213 views

Can rockwool batting be used in termite heavy area under interior face of foundation wall in ground contact?

I have a gap in my below-grade cellar ceiling and the interior face of my exterior foundation brick wall that I want to seal up. I'm thinking of stuffing it with some Rockwool batting. It was an ...
MonkeyBonkey's user avatar
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0 votes
2 answers
2k views

Is R-10 rigid foam for basement enough

I live in Ohio and embarking on finishing my basement. I am planning to put R-10 rigid foam boards between my poured concrete walls and the stud walls. I only have about 2 feet or less of the ...
Larry Beall's user avatar
2 votes
3 answers
3k views

How can I insulate a crawl space with very large joist spacing?

I have an older home (60's era) with rather cold floors. I was thinking of adding fiberglass batting to help with this, but when I went to measure the joist spacing, it seems MUCH larger than I ...
James C.'s user avatar
1 vote
1 answer
231 views

Is this hose bib install missing insulation or a shut-off valve?

Plumbers installed an outdoor faucet in a requested location by drilling through a block basement wall and installing a hose bib that will not freeze. I asked if a turn-off valve needed to be ...
cr0's user avatar
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2 votes
1 answer
1k views

Can I attach tongue and groove wood paneling (or similar) directly to foam over concrete block?

I am currently working in the cinder block basement of a small cabin in a climate with very cold winters. The convective cold from the cinder block walls in the winter is quite chilly. I want to ...
absentx's user avatar
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0 votes
1 answer
216 views

Rockwool vs Fiberglass insulation

I'm currently finishing my basement and I'm stock between what to use on rockwool or fiberglass. Based on my research rockwool is better than fiberglass but it is hard to install so its more ...
TPH John's user avatar
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0 answers
30 views

How to remove drylok paint from copper pipe [duplicate]

What can I use to safely remove dried drylok paint from a copper pipe without damaging the pipe? Can I use mineral spirits or acetone? Maybe olive oil?
MonkeyBonkey's user avatar
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0 answers
194 views

Insulating a Deep Rim Joist Cavity In Old Home

Recently bought this 1880's home and there are several very deep rim joist cavities. There are three in total, 2 under the vestibule of the house, 1 running along the rear wall of the home (under one ...
unique_beast's user avatar
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1 answer
2k views

Insulating under the staircase from the crawl space - faced fiberglass insulation ok?

Our house is built on a slope, so the staircase to the bottom floor is right above the crawl space (vented; climate zone 3). The staircase is carpeted, and there's no insulation underneath. I can ...
K. Don's user avatar
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1 answer
1k views

Could spray foam insulation around a drain pipe have caused a toilet to loosen?

About 3 weeks ago, we had a problem with our toilet. The toilet is on the first floor. It was leaking. We called in a plumber who said that the wax seal was bad and he fixed it. After doing this, we ...
Bob's user avatar
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2 votes
2 answers
2k views

Is there any reason *not* to add shipping styrofoam pieces to wall insulation?

My basement walls are covered with a few inches of polyiso foam board with interior stud walls being built over the foam board. I have some extra pieces of foam board from the installation that I am ...
susie derkins's user avatar
0 votes
1 answer
1k views

Vapor barrier under cut slab

My basement concrete slab has been cut to add some plumbing. Problem is that it was cut in such a way that there are no existing vapor barrier left to tie new ones into. Attaching photos for better ...
basement_diy's user avatar
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1 answer
100 views

What should I do about condensation on radiant barrier in basement?

I have insulation surrounding the opening of two of my egress windows in the basement. I am noticing a good deal of condensation where this insulation is in contact with the radiant barrier which is ...
EMAW2008's user avatar
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0 votes
1 answer
204 views

Insulate around header joist in 1913 house? Insulate under the floorboards?

The house is drafty and cold. We are a couple miles from the Pacific so get a fair amount of rain and wind. As long as the heater is running, it is nice. I'd like to improve it, however, I've also ...
Robert Lugg's user avatar
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1 answer
3k views

fixing crawlspace insulation, can/should we use r-30 batting meant for attics?

Our kitchen floors (hardwood) are freezing, and we found that crawl space insulation below those floors appear to be poorly installed. First, the insulation appears to be installed upside down, with ...
rugbert's user avatar
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0 answers
171 views

What is the best way to insulate already existing stud wall against block foundation?

I am doing some remodeling in the bathroom of a bi-level. I removed the wood paneling and found the stud wall directly against the concrete block foundation with batt insulation only in the cavities. ...
donchiro's user avatar
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2 answers
132 views

What is this material? Could this be containing asbestos or any other harmful material?

[![enter image description here][1]][1] I have this in my furnace room stuffed above the duct and also on the ceiling if u see one of the picture. What is this? Can it be containing something harmful ...
Fictitious Tech's user avatar
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1 answer
298 views

Does my walkout basement stud wall need to be flush against the 2" rigid foam board I have installed on the basement concrete wall?

I am building an 18' x 14' wood shop in one corner of my basement and one of the side walls is concrete. I am installing 2" rigid foam board on the concrete wall and the way I have the stud wall ...
Gayle Keith Braesicke's user avatar
1 vote
1 answer
253 views

Basement wall design

I'm working on finishing my basement with 6 corners. The back wall is solid concrete with 4 corners (the garage is above one section). There is no moisture, and I plan on keeping it fresh with the two ...
MoKi's user avatar
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0 answers
58 views

Rim Joist Insulation with Backer Rod

I want to take a semi-permanent approach in insulation for my rim joists as I’ve heard DIY spray foam may not pass inspection and it would be a lot of work to remove once sprayed and cured. I’m ...
LawnMavrik's user avatar
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0 answers
51 views

Insulating solid walls, permeable membrane vs solid insulation

I've got an integral garage being converted to living space (bedroom). Around half the longest wall and rear wall is below ground which is insulated and well drained from the outside. Front wall ...
handyman's user avatar
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