Questions tagged [crawlspace]

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32 views

How to insulate a crawl space without an access point

I have a cottage that has recently been completely renovated but later learnt that the floor was not insulated because there isn't an access panel. The cottage doesn't have a crawl space the area ...
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1answer
36 views

Is a peltier-based dehumidifier a good choice to prevent condensation?

I have a non-heated, enclosed space (crawl space that does have a vapor barrier). During a limited number of days in the spring or fall, I get condensation on things that stay cold while the air ...
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1answer
33 views

Minimum unfinished basement door height

I have a 1927 house that is built on a hill such that the basement walks out level with side yard and the sub-basement originally had a door that walked out the back yard with two steps down to ground ...
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1answer
798 views

Repair/replace foundation vents in wooden siding?

The vents into my crawlspace are cut into the wooden siding and I'm not what the correct way to repair/replace them is. All of the examples and products I've seen show the vents in the concrete wall ...
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1answer
42 views

Is this a reasonable way to create a crawlspace over a structural floor?

So, part of my thinking on "how to build a house" includes the use of a structural floor (slab) with a crawlspace framed atop it to provide space for, and access to, service runs. (Air handling ...
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2answers
149 views

Is it a problem that my laundry drain protrudes above ground level?

My plumber just moved the laundry's washer drain location and this is the picture from the outside: It was re-connect to the old drain pipe and go into crawl space. My question is: Does it look ...
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0answers
18 views

Vapor Barrier Plastic over upside down crawlspace Insulation

I bought a rambler built in 1972. Had guys replace the insulation. Inspector came and said they put it in upside down. It's a shallow crawlspace and would be a mess to tear off paper and hard to ...
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2answers
84 views

Is a too-shallow foundation allowing excessive water into my dirt crawl space?

I live in a local minimum for my neighborhood, and in fact my house is built on the banks of a stormwater drainage ditch. Most of the rainwater from the road is collected by stormwater drains and fed ...
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2answers
642 views

Does Age of Home need to be considered when encapsulating crawl space?

I have had my crawl space encapsulated. It has made a big difference in the air quality inside the home (80 years old). However, I am now seeing cracks throughout my home in the walls closer to the ...
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1answer
32 views

Insulating/encapsulating crawlspace with HVAC ducting questions

In the PNW/Zone 4 climate. The house I am purchasing built in 1942 with an addition added had an inspection performed and it was noted that some of the fiberglass insulation installed under the ...
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1answer
106 views

Widening the stone entrance into a crawlspace

I've got a 200 year old house with a crawl space under one corner of the house. The entrance to that crawl space is very tight (pictured below), and I am a large man. I want to expand the entrance to ...
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1answer
149 views

Mold in inaccessible crawlspace

I bought a 1927 house last year and, afterwards learned I'm especially sensitive to mold and this house has plenty of it. I've eliminated mold everywhere I've found it except in the inaccessible ...
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5answers
655 views

Is moisture a concern with solid hardwood flooring over a crawl space?

I recently purchased around 600 sq feet of 3 1/4 inch solid hickory from Bruce, which I'm installing over a crawl space. I put down a 6 mil vapor barrier in the crawl space. I'm measuring the ...
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3answers
829 views

What is the minimum height to a crawl space, and where did you get that information?

I am working with a customer and it was a great question. I was trying to find the exact answer.
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0answers
105 views

How to knock a hole through wall in crawl space

I need to gett access to the crawl space under the floors in every room in my house so that I can fit underfloor insulation. I'd like to fit insulation board as it seems to be the easiest to work ...
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0answers
53 views

Options for sealing off basement crawlspace

The "crawlspace" In the back left upper corner of my basement, a hole was made to enable the addition of a powder room on the main floor 15+ years ago. The basement walls are concrete and the hole ...
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1answer
38 views

Crawl Space Insulation in Montreal

I have the ground floor apartment in a 100 year old triplex on the plateau in Montreal. It's an 800 sq foot apartment with baseboard electric heaters and I'm currently using over 110kwH per day to ...
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2answers
56 views

What should I do with the airflow in a sealed off conditioned crawlspace

First and foremost thanks ahead of time for everyone's help :) I am in the process of finishing my basement and had some questions/concerns about "what to do with the air" in my crawlspace. ...
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1answer
74 views

2-4 inch gap between crawlspace slab (floor) and surrounding wall - Why?

about a year ago I had my crawlspace conditioned. Among other things, the company put in a concrete slab for the floor and added a sump pump in the corner. The strange thing is, there is a 1-4 inch ...
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0answers
28 views

How can I provide effective access to a subdivided space below a non-structural floor?

One problem faced when finished spaces are built atop concrete slab floors (whether slab-on-grade/slab-as-basement-floor, or a suspended reinforced concrete structural slab floor) is "where do the ...
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3answers
3k views

Inaccessible crawl space

I'm in the process of buying a home. I had it inspected by a home inspector and a termite guy. They found that the part of the crawl space under the kitchen was too low to the ground to access. They ...
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0answers
27 views

Another Crawl Space Encapsulation Question

I recently encapsulated the crawl space under a 12'x14' "sun room" addition to our home. We are in SE Ohio. The room was initially built as a 3 season room, not heated or cooled and had jalousie ...
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2answers
100 views

Crawlspace encapsulation

This past weekend I recently had to fix the flooring of my family cottage. In a heavy-traffic side entryway, the plyboard floor was bending when you walked over it. We opened up the floor to see ...
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3answers
238 views

Is it a concern that 120v cables hang down from the ceiling in my crawl space?

Recently went in my crawlspace to fix some plumbing issues and noticed that all the electrical seems to be just hanging, with some on the ground. I'm fairly certain that this is nowhere close to code, ...
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3answers
90 views

What's the best way to keep humidity down in crawl space?

I have a nominally dry crawl space that is around 22' square and about 4' tall with a concrete floor. It has no indication of leaks and is dry, but too moist during the hot Maryland summers to keep ...
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1answer
68 views

Encapsulating a cottage crawlspace built on bedrock

I own a 3 season cottage that is built on concrete posts that are embedded into the bedrock. I would like to use the cottage in winter and I was thinking that encapsulating the crawlspace under the ...
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3answers
78 views

Crawlspace Post to beam lumber grade

Recently we replaced some of the rotten and cracked true size 4 in x 6 in. posts under the house in crawlspace. The old posts were resting on concrete pads 24 in. x 24 in. and supporting a true size ...
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1answer
890 views

GFCI tripping on overload?

We called out the contractor who did our crawlspace encapsulation because the GFCI receptacle that serves the crawlspace loads (dehumidifier, sump pump, and two humidistat controlled fans) trips ...
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1answer
90 views

AC unit dripping onto crawl space vapor barrier

I just bought a house whose crawlspace looks like it was partially converted to being sealed off. Basically, they put down a vapor barrier and closed off the vents, but didn't finish the job. On top ...
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2answers
687 views

Can porcelain tile planks be installed in a crawl space house?

My home is a single story, about 1200 square feet, and is built on a crawl space foundation with a plywood sub-floor. The people we bought the house from had flipped the home after a foreclosure, and ...
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3answers
3k views

Geotextile Filter for French drain woven or non-woven?

I'm getting to the point of buying the material for my French drain, which is suppose to go at the foundation of my house's crawlspace. Now the question, I couldn't find a definite answer to...the ...
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0answers
74 views

How to tie interior crawlspace drain to outside discharge pipe?

I am installing an interior perimeter drain in a damp outbuilding crawl space. In the "literature" (YouTube) this kind of drain is commonly described but always with a pumped discharge (basin, pump, 1 ...
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0answers
38 views

Vapor barrier for crawl space

We have a home at Oak Island NC. Our home was built in the 70's. There were no mildew or mold problem until we had plastic put in our crawl space. After a few years we now have the mold problem so we ...
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1answer
98 views

Should I fill my crawlspace drainage trenches before putting down a moisture barrier?

I recently purchased a house by Lake Erie which has a crawlspace foundation. There are existing drainage trenches throughout it dug into the hard clay, which all drains to a sump pump. These trenches ...
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2answers
6k views

Does wire run in conduit in a crawl space need to be rated for moisture?

Quick question for all the electricians out there. I'm in the states and looking to make a couple new electrical runs for the outside of my house. The runs will be done inside my crawl space inside ...
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0answers
60 views

Can basement plumbing rough-in be moved to a new location in the crawl space?

Thanks for any help with these Plumbing 101 questions. Before talking with a pro about bathroom updates, I want a good grasp of what might be feasible. This bathroom has water and drain coming up ...
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1answer
218 views

Leveling the sagging side of the home

I am buying a home and one part of the home is actually visibly sagging. While looking at the crawlspace, I've noticed that some work was done to support the home. It seems like there is no new ...
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1answer
1k views

Bathroom exhaust vent into crawlspace

It is acceptable to vent a bathroom exhaust fan into a crawlspace? The crawlspace in question is uninsulated, has a dirt floor, and varies in height between 5' and 7'. The vent would enter roughly in ...
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11answers
24k 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 ...
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0answers
123 views

Is CSST piping and water piping in an inaccessible crawl space against code?

The CSST line that feeds our upstairs dryer with gas, the water pipes for the washing machine and some electrical wires run through an inaccessible crawlspace in the basement. When I went to turn the ...
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1answer
811 views

Moisture on crawlspace dirt/clay floor

Our house has a damp/musty smell to it when you first enter. Once you open a window/door the smell usually dissipates. In May (Chicago-land) the humidity in the house is about 30% upstairs and 40% in ...
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1answer
187 views

What purpose does this PVC pipe in my crawlspace serve?

I was cleaning the crawlspace under the house and discovered two 3/4 inch white PVC pipes that run across the crawlspace buried under ground (4-8 inch deep) and terminate at the perimeter foundation ...
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1answer
576 views

Tree stump in crawlspace surrounded by boards and covered in concrete?

I had a home inspection done today and the inspector told me this was a first: In the crawlspace there was a large box filled with concrete. It looks like this: Image source The builder was there ...
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0answers
37 views

Do I need to vent a crawlspace?

We just completed a 20x20 great room addition on the side of our house with a 4 foot crawl space and poured concrete floor. There is a 4’ by 4’ cut through to access this crawl space from the existing ...
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1answer
317 views

Ideas for covering vents to stop pests getting in?

We have a crawl space under our house and the wire mesh covering the vents is shredded. I want to keep the animals out and would like some ideas on the best way to do it. I was planning to replace ...
2
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1answer
627 views

How can I prevent interior French Drain from further eroding soil under garage slab?

I have a home with a block wall foundation and adjacent garage (built on a slab) on the left side facing the house. The house sits on a grade with right side to left side drop of 3/4" to 1" per foot. ...
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1answer
76 views

Installing Vapour Barrier in Crawlspace with Water Heater

I'm installing a vapour barrier over the dirt floor in my crawlspace. There is a water heater already installed and I'm wondering if it's a good idea to tape the vapour barrier directly to the bottom ...
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2answers
376 views

Stackable washer/dryer covering crawlspace access point

Background 1940s home has a stackable washer/dryer combo unit installed over the crawl space access door. I want to replace the unit with a new combo such that: The crawl space door is readily ...
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1answer
133 views

Remove Foundation Concrete Block

We are having HVAC ductwork installed in our crawlspace and one of the companies mentioned they do not remove foundation concrete blocks due to liability. Unfortunately, for us to have registers in ...
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3answers
69 views

What type of crawlspace setup do I have?

New home owner here - I’m working on sealing the furnace ducts that run through our crawlspace. Previous owner used silver duct tape and not the proper mastic or UL approves aluminum tape. Long story ...