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Questions tagged [crawlspace]

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How can I drain standing water from my crawl space?

CONCERN I own a 21-year-old manufactured home that I bought 4 years ago. It sits on a “permanent” foundation. There are poured concrete walls around the exterior and 40 piers supporting the rest of ...
Christian Tallet's user avatar
0 votes
0 answers
21 views

Active ventilation fan in encapsulated crawl space

I need some advice on where to place an active ventilation fan in my encapsulated crawl space. I have a dehumidifier positioned as shown in the diagram. The crawl space is encapsulated but lacks ...
Chris's user avatar
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0 answers
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Cut crawl space vapor barrier?

I am in the process of adding a dehumidifier into my crawl space following the encapsulation. The previous owner have vapor barrier installed without a dehumidifier. The crawl space floor is not ...
Chris's user avatar
  • 181
4 votes
1 answer
513 views

How to solve water pooling in crawl space?

Recently was told that we are having a lot of water pool underneath our house. A friend of a friend came too look and told us that we need a crawl space system drain on 3 sides of the house and a sump ...
Gap's user avatar
  • 41
3 votes
1 answer
48 views

Prevent a Crawl Space Door from Warping

I moved into a renovated house 2 years ago. The crawl space door looked custom. A frame of boards and a "face" of parallel boards. Unfortunately the door has warped and let critters in! The ...
JohnFilleau's user avatar
0 votes
0 answers
12 views

mold growth in crawl space?

Mold growth in crawl space We recently had some of our vinyl flooring swell. Since it was in the laundry room, I made a small cut to spray peroxide. Next thing I know there's mushrooms growing out of ...
Leo's user avatar
  • 1
0 votes
0 answers
26 views

Crawl space encapsulation question

I got recommendation to have my crawl space encapsulation and with dehumidifier. The company who sent the inspector said it will reduce the humidity on my soil. However, my question is that if the ...
Steel's user avatar
  • 1
0 votes
0 answers
18 views

Is a vapor barrier really necessary in crawl spaces in dryer areas (Colorado)?

We're looking at putting an offer in on a home in Northern Colorado. However, the home has had foundation work in the past and has notes on previous work that installing a vapor barrier to the crawl ...
MNeat's user avatar
  • 1
0 votes
0 answers
59 views

Brick Facade - Help me Expand an Existing Hole Without Doing Damage

I want to modify the existing openings on the facade of my house into the crawlspace. The current "vents" are just gaps in between the vertical bricks. I'd like to remove the bricks and ...
goldtistic's user avatar
0 votes
0 answers
27 views

A question regarding spray foam installation on damp foundation walls

We're scheduled to have our cinder block foundation/crawlspace walls sprayed today, however we got some rain last night and there's a good chance that some of the wall surface will be slightly damp. ...
W n's user avatar
  • 1
1 vote
1 answer
155 views

How bad is this crawlspace sewage spill?

We had a sewer back-up that was quickly dealt with but it was enough to drop some sewage water into the crawlspace. It came from underneath one of the bathroom toilets which had wax ring that started ...
elektrei's user avatar
1 vote
0 answers
47 views

Can I use an AAV instead of a vent pipe for a remote sink?

Our General Contractor added a "temporary" sink in our lower level during our kitchen remodel on the main level. It is the perfect location for a kitchenette downstairs, which has 2 ...
tdfi2003's user avatar
1 vote
1 answer
98 views

What are the purposes of pvc pipe with open end in my crawl space?

I have two PVC pipes in my crawl space with open end, one pipe with open end goes into ground of the crawl space, one goes out to outside of the house but no exit can be seen outside. Are they ...
Jenna's user avatar
  • 11
0 votes
0 answers
38 views

My crawlspace has 2 chambers and has flooded recently. Do I need 2 sump pumps or can I connect the chambers somehow?

The red line on the picture above is the "division" between the chambers. The entrance to the crawlspace is from the smaller chamber and there's a cutout to the bigger one. The walls on the ...
Crawlspace Flood's user avatar
1 vote
1 answer
116 views

How do I identify the source of water coming into my basement?

I have a ton of water coming out of the ground in my crawlspace at a specific spot after some recent heavy rain: https://imgur.com/a/wInKUzS After pumping for days to get the water down I noticed a ...
Dav's user avatar
  • 13
0 votes
0 answers
79 views

How can I remove these plastic foundation vents?

I am trying to figure out how these come out. They appear to be installed upside down. What is holding them in? Terminix advised to replace them at some insane cost, but would rather try myself first!
Crawl Space Remover's user avatar
1 vote
1 answer
80 views

Should I fill trenches along the foundation in my crawl space for stability?

I was exploring my crawl space and see that the soil level dips down as it reaches the final 12 inches before hitting the foundation walls. In some areas I can even see the bottom of the foundation ...
Gus Gauntlett's user avatar
9 votes
6 answers
4k views

Are there any arguments against LED strings for crawlspace lighting?

I have a small unfinished basement (1929 house) into which I regularly venture down (HVAC, electrical panel, IT, some food storage). The basement is surrounded by a (dirt) crawlspace and every time I ...
divB's user avatar
  • 1,377
2 votes
1 answer
59 views

Is it safe to put thin insulation board on the bottom of joists in crawlspace?

My townhouse has a partial lower level and partial crawlspace of dirt. Rooms with crawlspace under get pretty cold in winter. There is some un-faced (I think) fiberglass roll insulation tucked up ...
Hairy Beast's user avatar
1 vote
0 answers
80 views

Is it Bad That Homebuilders Used Plywood to Connect Joists and Supports in Crawlspace?

My wife and have recently had to be in and out of our crawlspace to thaw some pipes. She noticed the usage of plywood to connect Joists to supports. Is this normal? House was built in 2001, but we've ...
dapperdandev's user avatar
0 votes
0 answers
52 views

Should I remove or cover existing, damaged crawl space encapsulation plastic?

I live in Toronto, Ontario, Canada. I purchased crawl space encapsulation poly (10 mil plastic sheeting) for a 16 x 20 ft area. The 6 mil poly that is currently there has failed and is torn in a few ...
Louis Schreyer Duarte's user avatar
7 votes
1 answer
1k views

How can I seal a foundation vent?

I have a foundation vent that lets water into the basement and leads to flooding when it rains. I have plenty other vents and so I would like to completely close this one. The water comes in because ...
Apna's user avatar
  • 71
0 votes
0 answers
29 views

How long to leave traps in crawlspace?

My pest control guy sealed up possible entrances and left peanut butter traps. A week later the traps were still untouched and the smell is a lot better. No signs of gnawing on the sealed areas. ...
PnwChris's user avatar
0 votes
0 answers
30 views

What do do with this deck area over the crawlspace [duplicate]

Hi - I've recently had to rebuild the corner of my house due to this porch design that was built directly over the crawlspace (terrible design IMO) and eventually allowed water to come in around the ...
Ben Sales's user avatar
0 votes
0 answers
57 views

How to waterproof this porch area over my crawlspace?

This area seems like a bad design - essentially a piece of flat roof next to the house... The previous roof/porch here didn't seem to have any slope, and all the water drained towards the house (to ...
Ben Sales's user avatar
1 vote
1 answer
80 views

How can I close and seal holes in my foundation?

I'm facing a challenging situation with my house and need some advice. I'm new to this, so bear with me as I provide the details: Problem Description: Foundation Holes: The front of our house has ...
Max Gowan's user avatar
2 votes
1 answer
138 views

How do I drill into a crawlspace?

Trying to route some HDMI and ethernet cables through the crawlspace. There was an existing coaxial receptacle which I want to remove, so I removed that and expanded the hole. After everything is done ...
Daniel's user avatar
  • 261
-2 votes
2 answers
84 views

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 ...
colej4586's user avatar
  • 105
0 votes
1 answer
72 views

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 ...
user984896's user avatar
0 votes
1 answer
107 views

What is this white crystalline material in my crawl space?

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 ...
Jake K's user avatar
  • 1
0 votes
0 answers
40 views

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 ...
Star Ford's user avatar
1 vote
2 answers
138 views

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 ...
Carlton's user avatar
  • 11
0 votes
0 answers
103 views

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 ...
Alex's user avatar
  • 1
0 votes
2 answers
115 views

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 ...
user176434's user avatar
0 votes
0 answers
54 views

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 ...
Sitcoms's user avatar
0 votes
1 answer
34 views

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 ...
Sally McFadden's user avatar
0 votes
1 answer
69 views

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 ...
Atl Res DG's user avatar
4 votes
1 answer
923 views

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, ...
another_homeowner's user avatar
1 vote
1 answer
117 views

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. ...
joe's user avatar
  • 33
1 vote
1 answer
246 views

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 ...
Tyler Cheek's user avatar
1 vote
0 answers
112 views

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 ...
Andrew's user avatar
  • 318
1 vote
1 answer
110 views

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 ...
geoscience123's user avatar
0 votes
1 answer
53 views

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 ...
Kdemand's user avatar
  • 35
0 votes
0 answers
118 views

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 ...
bobby_yan's user avatar
  • 161
2 votes
2 answers
96 views

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 ...
Giardino's user avatar
  • 121
0 votes
1 answer
27 views

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 ...
bobby_yan's user avatar
  • 161
3 votes
1 answer
133 views

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 ...
JacobIRR's user avatar
  • 291
0 votes
1 answer
606 views

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 ...
callmewb's user avatar
1 vote
0 answers
172 views

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 ...
Mike's user avatar
  • 11
2 votes
1 answer
357 views

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. ...
peter's user avatar
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