Questions tagged [crawlspace]
The crawlspace tag has no usage guidance.
262
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Does this look like mold? (Mold test negative)
Recently had a mold test come back negative, despite me pulling a sample from white discolored crawlspace floor joist wood that is very close to an outside opening.
I was pretty confident this was ...
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Post was placed on crawlspace vent cutout
I'm a first time home buyer doing a new kitchen addition. The structural engineer drew out a framing plan where he put posts over a crawl space vent cutout. See photo for full detail. This is giving ...
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White crystal explanation
I know it's impossible for anyone to identify anything from a picture, but I was hoping to get some possible explanations and maybe some peace of mind from you all.
I have had to enter my crawl space ...
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Seeking Advice for Crawl Space Improvement in New Home [closed]
As a new homeowner, I'm looking to optimize my crawl space for storage. Before I start moving items in, I want to ensure the space is clean and well-prepared. Here's a snapshot of my situation:
Vent ...
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Radon and moisture mitigation when joists are on dirt
In this house in a dry climate, the floor joists are directly on dirt, and the floor boards are just one layer (no subfloor). After 150 years, there is no rot, and there has of course been substantial ...
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Are bare stacked bricks in crawlspace wall an issue?
I’ve recently had structural issues in my crawlspace addressed by a foundational company (installed floor jacks and wooden support beams).
However, after inspecting the space myself, I’ve recently ...
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Dirt mound in center of crawl space - Why?
There is a dirt mound towards the center of my crawl space area, and it drops of towards the foundation wall. Is this common, and what is the reason for it? My thoughts are possibly for flooding ...
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Can a bare 10 awg copper wire (ground for Starlink dish) be run underneath crawlspace w/o insulation?
Recently installed a Starlink dish 75 feet from house. Local electrician said I need to ground with 10 awg to the main service ground on opposite side of house, about 150 feet from dish. Bought the 10 ...
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Below grade wall rotted - will this solution work?
looking for a little guidance if my solution will work here.
One section of my 1830s simply has a crawlspace underneath, and it seems that in the rear the sill plate simply rests on top of a ...
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33
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Proper Ventilation of a Wet Crawlspace
I moved into a renal house and afterward noticed my closet smells musty and damp. Ventilation of the crawl space under an exterior concrete stair is provided by a single screened vent on the exterior ...
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My neighbor has rodent issues which is causing me issues. What can be done from a code enforcement standpoint? [closed]
My neighbor has rodent issues which is causing me issues. What can be done from a code enforcement standpoint?
We have now have rodents trying to get into our crawl space. Our pest control servicer ...
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884
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What is the purpose of this indoor crawlspace grate/vent?
This crawlspace floor grate/vent is located in the furnace/water heater closet of my rambler house outside of Seattle, WA, built ~1959. The closet is covered by two bifold doors, so not airtight, ...
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In What Direction Should This Basement Fan Blow?
Shown is a basement of about 5,000 square feet with concrete floor and walls in a building originally built in 1935, acquired a year ago but with a 22" basement fan that's always been dead. ...
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55
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How can I prevent rainwater from entering my crawlspace door?
So I have a crawlspace door with mulch that goes right up to it, and the ground level is slightly depressed at the level of the door. The main problem I think is that the ground underneath the mulch ...
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Can I use a portable dehumidifier as a temporary solution for the humidity in my crawlspace?
I have a Frigidaire 70 Pint Capacity Dehumidifier that I'm considering putting down in my crawl space as a temporary solution.
Back story: Our house is only a 1.5 years old but the crawl space is very ...
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57
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How should I insulate crawlspace joist bay for water supply lines?
I am renovating a kitchen in my new home, which involves the job of moving the kitchen sink to a space to the floor above the crawl space. In order to do this, I need to run water supply lines ~ 10 ...
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Crawl space mono post kicker?
My rough framing inspection failed because i didn’t have kickers on the mono post. They are welded to the ibeam so I’m not sure the reason why id need it. Can anyone explain how to accomplish this?
I ...
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Can foam jacking restore slope to my front stoop?
The stoop in the front door inclines towards the house and guides the water into the crawlspace. The stoop itself is outside the foundation wall of the house and is not fixed to it. The lower part of ...
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How should I go about removing moldy plywood and plastic from my crawl space?
I purchased this house about 5 years ago and the crawl space was checked out by a home inspector and he said it looked fine but it would not be a bad idea to install some sort of vapor barrier. The ...
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Where to cut the opening for bath vent in crawlspace wall?
My first-floor half bath vents into the crawlspace, which violates the code, and I would like to correct it. A feasible way is to extend the hose from the current vent in the crawlspace to the nearest ...
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105
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What to do with sewage filled crawlspace
A 50 year old, 3” cast iron sewer pipe has been pouring sewage through two quarter-size holes for at least three weeks, possibly as long as 6 months.
I’m finding a plumber to replace the cast iron ...
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214
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How can I seal a crawl space door near an HVAC vent?
I bought a house a month ago and I'm having issues with a crawl space door located right next to the upstairs air return.
The door is not insulated on the other side and smells/heat from the attic ...
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94
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Necessary repair of termite damage to floor joists in crawl space?
I have what appears to be some minimal termite damage to a few floor joists near my front and back porches. No floor sag or leveling issues that I am aware of. There is not a current infestation. I ...
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Tips or tools for drilling up at a weird / inaccessible angles
Disclaimer: I realize this may not have a good answer other than "yeah it's hard", but I thought to ask just in case.
I'm contemplating running a dedicated electric circuit for my fridge. ...
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97
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Is this mold in the crawlspace? Flip or flop?
We are looking at putting an offer in on this house but are hesitant because it was recently flipped. New everything cosmetic, looks like quality work. They also installed a new roof, HVAC +duct work,...
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227
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What to do about moisture in crawlspace
We bought our new Chattanooga, TN home in August and it is ~3 years old. The crawlspace has some water penetration on one side of our house. We live on a hill and the water is penetrating on the side ...
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290
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Will exhaust fans effectively remove moisture from my crawl space? [duplicate]
This is a highly debated / discussed topic, but pretty much all of it based on parts of the country with relatively very high humidity.
I live in San Diego, where humidity is moderate most of the year ...
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Additional crawl space support footings [closed]
I have a 92 year old 1 story house in Michigan that is sagging along the main support. I have to add additional support and jack it up in some spots. I'm not even sure that the original piers have ...
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108
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How to repair and clean up from sewage drain leak
Last night I went to store some things in my crawl space and discovered that a joint in the drain line from the sump pump out to the city sewer line had become disconnected (see photo; this is a 2004 ...
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149
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What is this weed looking thing in my crawlspace?
I had some plumbers go into my crawl space for some repairs, and were freaked out by some weed like growth which is very white in color. They asked that some water damage restoration team come out to ...
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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 ...
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Should I insulate the basement ceiling in a multi family dwelling?
I have a three-unit apartment building in Illinois. It has one upstairs apartment and two downstairs apartments. They're all heated with baseboard heating.
The two downstairs tenants are complaining ...
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135
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Rerouting routing home run wiring from the crawlspace to the attic
Then wiring in my house is old, much of it cloth wiring. The electrical cabling goes from an outdoor main panel down a conduit into the ground and comes out in the crawlspace. I'm wanting to rewire a ...
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Fastest way to dry a vented dirt crawl space (no vapor barrier) in California (Bay Area)
I read so many contradicting things online: Some recommend dehumidiers (if so, which?), some advice against. Some recommend fans (which, how many, how/where to install?), some advice against. Some ...
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What is/was this underground space used for?
It's a southern California structure built around 1970. It has these cellar storm doors, but it's not the access to the crawlspace and appears to have a capped off gas? line. What is/was this?
[Update]...
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Should I cover my crawl space vents?
I wonder whether I need to close my crawl space vent or not. I have three vents in different areas of the crawl space. The vents have wire net. What I mean by cover is completely closing off the vent.
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OK to leave open combustion air pipe in crawlspace sucking air from crawlspace? I like in Alaska and we have had a lot of snow blocking outside vent
We recently had an unusual snowstorm that completely covered the open combustion air pipe that is vented at almost ground level to the outside. This caused the HVAC to shut down. We are worried ...
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When sealing a crawlspace, should the vapor barrier go in front of or behind wood posts resting on the footing?
Boise, ID (zone 5). I'm encapsulating the crawlspace both as radon mitigation and to reduce heat loss (currently no insulation down there).
Under the floor joists are some beams supported by 4x6 posts....
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When insulating foundation walls in a crawlspace with two layers of EPS foam board, is including air gaps a good idea?
I'm planning on insulating my currently uninsulated 6-inch concrete foundation wall. This is zone 5, so code says R-15 is required. I can achieve that with 2 layers of 2" EPS foam board (nominal ...
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137
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Can I attach crawlspace vapor barrier over existing foam board on perimeter?
I have a very low crawlspace that i finally have access to while the floors have been removed. The crawlspace is vented freely and Former owner attached unfaced polystyrene boards to the perimeter ...
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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 ...
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245
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How can I repair a loose crawlspace support post?
We just had a crawlspace inspection (unrelated to this topic) and the inspector found one of our support posts was loose enough to be wiggled back and forth. It wasn’t quite touching the concrete pier....
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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 ...
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198
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Is this mold growing behind duct tape that's holding vapor barrier to concrete foundation?
We put a vapor barrier down in our crawl space. Some parts of the perimeter were not completely sealed, so a few months ago, I used a clear duct tape to attach the vapor barrier to the concrete ...
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Crawl Space Encapsulation: How to deal with the "Chamber of Secrets?"
I have a south Louisiana home built in the 1950's with a vented crawl space. In the 70's, a den was added with a slab on grade foundation. In this addition, the back porch was converted into a ...
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Is it possible to have an air leak from the ductwork?
I live in a townhome condo, occupying the third and fourth floor of the building. The indoor AC unit is on my second floor and the ductwork is in the space between the ceiling of the first floor and ...
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Crawlspace vapor barrier
I had vapor barrier installed in my crawlspace and it does not cover the perimeter drain. It only goes to the edge of the drain, about 8 inches away from the wall. Should it cover the drain and go up ...
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207
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Airflow into encapsulated crawlspace when connected to a basement
I have two crawlspaces, separate from one another, each with access from the basement and also a grate on the exterior, allowing airflow. If I take steps to encapsulate them, should I block off the ...
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361
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Help me enclose my crawl space
I have a home in the Northeastern USA (Maine). The frost line is roughly 5 feet.
My home appears to be built using posts and piers. I haven't had a chance to start removing things to get a better view ...
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mitigating radon in basement with joist & plywood floor
I bought a vacation home in the mountains and have found that it has a dangerous radon level (7.4pCi/L). The house has an 800 sq-ft unfinished basement, including a rough plywood floor over treated ...
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