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13
votes
1answer
2k views

What are the disadvantages of having electrical conduit penetrate my foundation below-grade?

I'm having an electrician wire a lamppost in the backyard. His initial proposal was to do something like this picture shows: (The diagram is from this article.) The conduit's rise from the ground ...
10
votes
2answers
4k views

Mold remediation in crawlspace

Just bought a 25 year old home that has improperly installed insulation in the crawlspace. The insulation is fiberglass rolls with a paper backing, and is installed with the paper facing down, toward ...
9
votes
10answers
19k views

How can I remove mice from my house?

I live in a townhome which is a 2nd and 3rd floor unit. On the 3rd floor is a closet with a crawlspace entrance which is the attic. There are definitely mice running around in there. I tried to ...
6
votes
3answers
3k views

How can I get rid of fleas in my crawlspace forever?

I have lived in my house since 2007. I have a large crawlspace (dirt floor, ranging in height) where I have a nice woodworking shop. In 2011 the shop became infested with fleas, but not the ...
6
votes
1answer
2k views

Insulating ducts in a crawlspace

Consider a source duct from the furnace/AC. The ducts run in a vented crawlspace. The floors atop the crawlspace are a mix of hardwood and kitchen vinyl. The symptoms are: the longer run vents ...
6
votes
3answers
6k 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 ...
5
votes
1answer
328 views

Sump with no pump!

A rainy month and water in the crawlspace: It's was an unusually wet April where I live. I went into my crawlspace last week to change the filter on the A/C and found water. The crawlspace is ...
5
votes
4answers
2k views

What protection is needed to access the crawlspace under the house?

We have a crawlspace about 2 feet tall under the house. (Scary!) Looks like it has a black plastic barrier on the ground (which I believe is just dirt). How should one dress to crawl under there, and ...
5
votes
1answer
238 views

Was coal ever used as an insulator?

In pulling off some broken mortar on the dirt foundation (where the actual brick footers rest) of a 1920's house crawl space, I discovered a layer of black coal just under the mortar. There are ...
5
votes
6answers
23k views

Should I encapsulate my crawl space?

Our home was built with a dirt crawl space that is about 2' from ground to bottom of floor joist. The floors are insulated with fiberglass held up (where it hasn't fallen down) with wire rods. The ...
5
votes
1answer
1k views

How do I cut a new crawlspace access in a brick foundation?

When my house was built, the crawlspace access was put on the high side of the property, which I'm sure gave the subcontractors the easiest access for HVAC, wiring, etc. But there is very little ...
4
votes
2answers
245 views

Should I periodically air out the vapor barrier in my crawlspace?

I have a vapor barrier in my crawlspace which is made of multiple sheets of 6-mil plastic. One contractor suggested that in the dry months I should pull back the sheets of plastic and allow the dirt ...
4
votes
2answers
263 views

Curtain drain in the crawl space - Part 3

I've dug out a trench around the perimeter of my crawl space. Then I planned the next steps. I took a week off but I'd like to finish this project next weekend. I'm going to put a 4" perforated pipe. ...
4
votes
3answers
4k views

Should I use foam spray insulation in my crawl space?

My crawl space has no insulation. The dirt is wet near one of the walls. There have been termites in the past. I'm thinking of insulating the ceiling (between the joists) and the walls with foam ...
4
votes
2answers
4k views

What can I do in this vented crawlspace to keep the room above warmer?

I've recently moved to a new home. This home had an addition that was built on top of a Crawlspace that is vented to the outside. Needless to say, the morning after the first cold night made me ...
4
votes
1answer
196 views

Curtain drain in the crawl space - Part 2

Part 1 is done. We've dug a trench at the interior perimeter of the crawl space. It took 8 hours 3-4 people (I was working myself but not all the time) and one dump truck. Total budget was around ...
4
votes
1answer
3k views

How should I install a curtain drain in my crawl space?

Since I have wet areas in the crawl space, I have decided to dig a trench at the perimeter of my crawl space to take care of the water. This would also allow me to install rigid foam insulation on ...
4
votes
3answers
4k views

How do I insulate the ceiling in my crawlspace?

I'm desperately looking for some advice on how to properly insulate the crawl space. I live in eastern Massachusetts where it has recently been in the teens and 20s for low temps in winter. I have a ...
3
votes
2answers
343 views

Things to look for while entering the crawlspace of a house I'm considering buying?

I'm going to examine the crawlspace under a house I'm considering buying. What type of things should I look for? Here's my list so far: Water, moisture, and dampness -- finding it's source. ...
3
votes
3answers
1k views

Crawlspace Drainage

I am beginning the installation of a Crawlspace Perimeter drain. I discovered that the concrete footing extends about 12" into the crawlspace. As I was going to place the NDS EZ drain pipe down ...
3
votes
4answers
231 views

What could be the source of dirt in attic

I've had occasion to get up in the attic of my (new, to me) house recently. There is what appears to be dirt all over everything up there, with actual accumulation in places. This is a 2-story ...
3
votes
3answers
4k views

Renovating Crawlspace with Poured Concrete Floor

My newly-purchased 1950s home has a below-grade crawlspace with a poorly-poured concrete floor. Specifically, it is very coarse and looks like it was poured and spread with a garden rake. In some ...
3
votes
1answer
1k views

Vacuum Excavator for crawl space

What do people think of this method for excavating a crawl space: http://www.mvtimes.com/news/2007/11/21/vacuum-excavator.php
3
votes
2answers
2k views

Is it okay to put a heat pump water heater in a crawl space?

I have a pretty large crawl space. It is 80 inches wide and around 7 feet high. I am looking to replace the 50 gallon electric water heater with the new Geo Spring Water heater by GE This unit is wide ...
3
votes
3answers
1k views

How to choose floor insulation?

My question is about insulating the ground floor. I have a crawlspace under the floor which is vented and therefore quite cold (average temp in the winter is 4 °C and in the summer 13 °C plus ...
3
votes
3answers
730 views

Found hole with water under house

Today, while in the crawl space under the house, I found a large hole that has water in it. Now I'm trying to figure out what to do about it. I had noticed a depressed area under the house in the ...
2
votes
3answers
196 views

What is the difference between mold in air duct and mold that grows in crawl space?

Specifically, are they both dangerous to human health?
2
votes
1answer
162 views

How do I fix my crawlspace's mould problem given the floor is an improperly poured slab of concrete?

I have a 50 year old backsplit, with a minor mould problem in the crawlspace. There are a couple of wet spots that can be fixed with simple exterior grade changes, and one spot that will need to be ...
2
votes
3answers
1k 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. ...
2
votes
1answer
153 views

What are my options to fix cold and drafty floors over a vented crawl space?

I have a 1950s bungalow that sits on a crawl space. The crawl space is vented and has moisture problems (which I should/will fix, but that's not the main point of this question). R19 insulation is ...
2
votes
2answers
802 views

Is Flex Duct Safe To Use In A Crawl Space?

The home I purchased has a crawlspace below an addition that was put on to the original structure. The HVAC contractor that did the work ran 2 long runs of flex-duct to the 2 registers in the room of ...
2
votes
0answers
317 views

How should I seal and insulate a crawlspace to mitigate radon and allow for storage in the space?

Background: I recently bought a house built in 1996. It has a 1480sq ft (approx) living area, which is the same as the crawl space size. The location is in the Kansas City metro area. The yard is ...
2
votes
0answers
213 views

How do I remove mold and mildew from subfloor of a house with crawl space? [duplicate]

Possible Duplicate: Mold remediation in crawlspace House with crawl space has mold and mildew on the sub-floor. I've determined the cause is no vapor barrier and a leaky pipe and there is ...
1
vote
1answer
88 views

Can I have two storeys in a 16 foot space?

I'm in the process of closing on a house that has an unusually large crawlspace underneath the structure. The house is built on a relatively steep hillside and the frame of the house extends to the ...
1
vote
2answers
124 views

How to seal HVAC ducts running through old window to addition?

My house has a small addition that was added by the previous owners. They ran the HVAC ducts through an old window and some of the block: The rectangular section in the window should be easy ...
1
vote
2answers
2k views

How fast does moisture seep out of the ground in a crawlspace?

I need to fix humidity in my crawlspace. I'm aware of the expensive option, i.e. conditioned and sealed crawlspace, but I hope that's a last resort. I'm wondering if I can get away with the ...
1
vote
2answers
332 views

What is the downside to installing faced fiberglass insulation in a dirt floor crawlspace vs non-faced?

I have a vapor barrier on the dirt floor already. The insulation will go in the floor joists above, paper side down.
1
vote
1answer
176 views

Is it normal to notice underneath the plastic barrier in crawlspace drops of water?

A radon barrier was placed using 6mil polyethylene sheets and sealed with silicon in at the seams. However, I do notice in certain spots a couple of drops of water underneath the sheet. Is this ...
1
vote
2answers
1k views

How can I strengthen the floor above a crawl space in pier and beam construction?

what are the steps to strengthen pier and beam (sometimes called post and beam) foundation? i will be installing a 3-5 ton Rocket heated cob bench mass heater in a rambler home in the living room ...
1
vote
1answer
43 views

Adding more floor joists in a crawlspace. Originals are 5' OC and need more support

I just bought a 1956 ranch house in Portland, OR and am facing an issue. I've gutted the bathroom for a remodel and it's down to the studs. There was a bit of water damage to the subfloor around the ...
1
vote
0answers
26 views

Proper method to seal a heated crawl space

I have a heated crawlspace with a dirt floor. There are no vents, it is fully connected to the house, and currently has a pool liner and vapour barrier stretched over it, but it is not sealed. There ...
1
vote
0answers
83 views

How do I cleanly install speaker wire in a mobile home?

I have a decent amount of experience with all sorts of wiring in houses and offices. However all of my experience relates to buildings which have attics or dropped ceilings. I now am installing ...
1
vote
0answers
71 views

Suggestions/advice on vapor barrier product to use?

In the basement of my house (built in 1900) in NE Ohio...Half of the basement floor is finished, the other half is dirt floor covered by a few inches of crushed stone gravel. I had a mold issue, so ...
1
vote
0answers
188 views

Minor Crawlspace Excavation: Need permits/structural engineer?

Background: First house, built in the late 60s, bought in October 2014. Original house has crawlspace with combination cinder/concrete foundation. Master bedroom is an addition to the house with a ...
1
vote
0answers
135 views

How can I insulate a combo basement/crawspace?

I live in Louisville, Kentucky, so we have relatively cold winters (nighttime lows consistently below freezing) and relatively hot, humid summers (daytime highs consistently in the muggy 90s). My ...
1
vote
1answer
326 views

What are the downsides to paving a dirt crawlspace with cement?

I've got a home with a dirt crawlspace -- post and beam holding up the house, with the piers for the posts in the crawlspace of course. I had someone come look at it recently to clean it up -- I've ...
0
votes
1answer
51 views

How should holes in a crawlspace liner be fixed?

I had a company encapsulate my crawlspace with 20 mil liner. The liner installed has 3 dime size holes as well as a 4-5 inch gash they covered with tape. They now would like to cover the holes with ...
0
votes
2answers
495 views

Do I need to install a sump pump?

The crawlspace under our house has a tendency to get a bit muddy when the rains are heavy and then dry up a few days later. When the rains are especially hard water will collect in a pit in the ...
0
votes
1answer
66 views

What's the best way to insulate a floor over a crawl space?

I have a crawl space that is roughly 50 square feet in space. The previous home owners installed a piece of plastic sheeting on the crawl space dirt floor. The floor above the crawl space is extremely ...
0
votes
1answer
55 views

What could cause a “smelly sock” smell seeping into our living room from the crawlspace? [closed]

Our living room floor is wooden so there is a gap between the footings and the floor. In late fall, we get a horrible smell in that room. It smells like smelly socks but worse. I thought it was ...