Questions tagged [foundation]

The base on which a house or other structure is built or installed, connecting the structure and transferring its load to the ground. Questions using this tag should include additional tags to identify the type or material of the foundation.

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3answers
23k views

How to seal between sill plate and foundation wall with wide gap?

Here is a picture of the top of my uninsulated basement wall. The foundation is poured and from early 1970s. For orientation to the photo: the white in the lower left corner is the vertical face of ...
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0answers
102 views

Estimating frost heave displacement?

I'm planning a storage shed underneath a deck. I'll assume that the deck is anchored below the frost line and won't move when the ground freezes. I'd like to build the shed on just a floating gravel ...
3
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1answer
313 views

Water on block foundation wall

I have water on the top 4 feet of my basement foundation wall. This goes around almost the entire perimeter of the basement. The bottom 4 feet of blocks are dry. Any ideas the cause? Can someone ...
3
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2answers
408 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 ...
2
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0answers
905 views

Help! enclosed porch/sunroom foundation

We just purchased a home and now that the snow level is not 4 feet high ( we live in central NY ) we see that the concrete patio/foundation has horizontal cracks, and crumbling along the side, corner ...
2
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1answer
137 views

Vertical cracks on newly poured foundation

The builder just poured concrete for the foundation of my house. One week later I saw a vertical crack on the back side of the slab. The crack is thin but it goes vertical and also horizontal. It is ...
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0answers
65 views

Why is there a large walled off space in the middle of my basement?

I just moved in a couple months back and noticed that this wall was a lot thicker than expected, lots of unaccounted for space. I was honestly expecting to find a body in there :P glad I didn't! ...
1
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1answer
27 views

Foam sheeting and siding below grade

Just bought a new house and there was a newer addition that had a shallow ditch on all sides. The yard slightly slopes towards the house. I was going move some soil to properly grade, but discovered ...
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0answers
14 views

Repointing stone basement

I am looking into which cement to use to repoint our old house (built ~1900) stone basement. I found conflicting advice, some suggesting type N or type S is fine, but some sources suggest that ...
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0answers
25 views

Rock Pit Drain, pumping up to neighbor

My neighbour built a new home, and a laneway home, 4 years ago. I believe he has a rock pit under the back house, and drain tile leading forward to the road (city) for the front. I have been ...
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0answers
24 views

Shed foundation across concrete and dirt, what approach would be good to use

I am planning on building a small shed, perhaps 8 or 10 foot by 4 foot. The place I want to build the shed will span across concrete and dirt/ground. The ground is about 2 foot, so it would be half ...
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0answers
34 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
81 views

What type of foundation is best in an area with silt loam soil, cold climate, and high water table?

I'm in the initial stages of planing a structure build, I say structure because what I'm really looking to build is an off grid ( no running water or sewer for staters ) vacation cabin on apiece of ...
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0answers
33 views

drywall gap again after foundation repair

My foundation (crawl space) was repaired recently, huge job, home not level. There had been a gap in a corner where the sheetrock had dropped down but that side (plus adjoining 90 degree) was reframed ...
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0answers
46 views

Foundation depth for mortared stone wall

I am building a mortared stone retaining wall and I am wondering on what depth to dig down for the foundation with which the stones will sit on. From what I gather from resarching, they say to dig ...
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0answers
360 views

Wires run through foundation vent screen

I need to replace the foundation vents in the house I recently bought. Unfortunately, AT&T, Time Warner, and others have run wires through one of the screens. I can't easily detach the wires to ...
1
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1answer
149 views

So Cal garage conversion: Proper way to level floor

I own a tract house built in southern california built in 1995. There was a builder option to have a 3 car garage (standard 2 car with tandem garage) or a super family room where the extension ...
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0answers
45 views

New build next to existing slab

I want to build a new structure, with walk out basement joining up to an existing structure that has a slab foundation. Is this possible? what about the slab/footer for the existing structure, how do ...
1
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1answer
81 views

Basement Footer Removal

This is kind of a convoluted situation, and I hope it isn't too confusing. I just bought a home with my wife, and in the basement there was a hideous bathroom. Functional, but hideous. So I am ...
1
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1answer
27 views

Exterior of addition's foundation leaks

My driveway runs along the side of my house to the back yard. One of the ten foot sections has shifted so that it angles towards the house. Water collects there and seeps into the house. The room it ...
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0answers
122 views

How to fill cracks in concrete slab inside house

My house had some foundation issues and the slab inside the house has separated from the foundation wall mostly all around inside the house. Some cracks are about 1/2" and I'm thinking in filling ...
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0answers
488 views

How to repair broken suspended cement slab

The very corner of the cement slab, which forms the floor of my basement, broke off. There was nothing supporting it underneath. the portion that broke off forms a triangle 11" x 10" x 14" x 3-6" ...
1
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0answers
110 views

Retrofit Foundation Posts/Beams

Bought a new (old) place and our inspector pointed out beams/posts that need framing/structural straps in the crawlspace. Ballpark estimate I got from a foundation contractor (site unseen) was a $3,...
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0answers
145 views

Sealing fully cast-in floor joists

My house built in 1928 has concrete filled spaces between the floor joists and rim joist. There are gaps in some of them, some 1" wide with most being very small. I suspect these gaps could be the ...
1
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2answers
612 views

Plywood over rigid foam over concrete: will I have moisture issues?

Short version: If I install 3" of rigid foam over a poured concrete foundation wall that has been sealed with Xypex, will I have any moisture issues if I install plywood directly over the rigid? ...
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0answers
48 views

Intex pool decking foundation?

I've been building a decking area which is 17ft x 17ft, the decking is to be the base for an Intex 16ft diameter pool, calculations show that the weight of this pool when filled with be approx. 18 ...
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0answers
67 views

Proper framing on foundation?

I think the foundation crew and the framing crew weren't on the same page. In the plans, this part of the home does not overhang the stick framing underneath. I'm not sure but I think the foundation ...
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0answers
81 views

Increasing grade next to house

Our house is built into a small hill, leaving a section of our basement exposed with both a small garage and a people door leading to the driveway. There are several (3-4) courses of block above the ...
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0answers
3k views

Convert Pier and Beam to Slab Foundation

Due to undersized foundation (5" wide x 12" deep concrete wall with no extra footing), low exterior grade to siding clearance, and little to no crawlspace access, and a bad floor that needs replacing ...
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0answers
107 views

Walls dont appear to be bolted to foundation - any retrofix?

After quick inspection of the walls in my house I dont think they are bolted to the foundation. At least I couldnt find the bolts - I think there mightbe several concrete nails holding it in place but ...
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0answers
119 views

Product identification/recommendation to seal top of foundation wall

In preparation for winter, I've started to inspect the exterior of my house and noticed some of the sealant at the top of the basement wall needs replacing. Unfortunately I bought the house like this ...
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0answers
561 views

Pier Beam Foundation Sill Beam

Background: I live in upstate New York, just outside of Ithaca. My wife and I have recently purchased a home at a steal because of an existing relationship with the previous owner. So the fact that I ...
1
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3answers
731 views

How can I prevent water from flowing into my carport under the wall plate?

The carport was enclosed but no additional concrete was poured. The sill was screwed directly into the concrete. As a result of being so close to to ground, water has come in under it about 2-3 inches....
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0answers
676 views

Can I drill a hole through brick wall/lintel for A/C lines?

I'm looking to move the a/c refrigerant and return lines that are currently through the middle of a window opening to a more natural location so that a window can be installed in the opening. I ...
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0answers
633 views

How to repair exposed exterior foundation insulation?

Thanks for checking this question. New to owning a home, and new to stack exchange. I do not know where to begin and I do not know what "terms" to use when googling. Any tips/ideas how to repair or ...
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0answers
114 views

Raised and Slab Foundation in Home

I am purchasing a home in Southern California. During the inspection, we discovered that the home is built on both a raised and slab foundation. The house was originally built in the late 1940s ...
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0answers
589 views

Is there a purpose for the concrete border at base of this house?

My wife and I are in negotiations to purchase a house that is located in the Southeastern US. The home inspector was a bit baffled by the concrete border (first image) that runs along the back and ...
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0answers
309 views

Monolithic frost proof shallow foundation, advice on the smaller details?

I'm building a 16x24 shed/garage. I have done most of the site work and I have a concrete guy starting tomorrow on the forms in preparation for a pour on Friday. He's done insulated slabs, he has 30 ...
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0answers
624 views

How many sump pits should I have?

I have an older french drain system and after experiencing some foundation problems (horizontal crack), I've been told that my system should be updated to a more modern one which has weeping holes in ...
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0answers
86 views

The tube drain pipe is in bad shape

Okay, two months or so ago I had the drains in the house snaked because of slow draining at almost all of the fixture sites. After the plumber was done, everything was great, but two days ago I walked ...
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0answers
489 views

Will installing closed cell spray foam over ventilation for basement French drain significantly affect performance?

Question: Will installing closed cell spray foam over the ventilation for a basement French drain significantly affect the sump pump system's ability to remove water from the basement? Background: I ...
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0answers
775 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 ...
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0answers
420 views

What can I do about a basement window well that is filling with water?

My house was built in the 1950s and I have a basement window well that was filling up with water after a hard rain. I have covers however the water would come up. After much reading online that there ...
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0answers
123 views

How can I reduce vibration transfer to piled foundation?

Situation is: new home construction about 50-75 feet from a railroad and the home is to be built on piles (or stilts) elevated about 12-15 above grade. I'll leave the underground considerations to ...
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0answers
623 views

Converting garage into living room?

We want to convert the garage into the living room. Our house has a crawl space under it. But the garage is a slab with cinder blocks around it. Water comes in through the garage door when it rains ...
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0answers
272 views

Repairing/patching concrete foundation of house

What's the best (or maybe easiest and most affordable would be more accurate) route to patch the concrete of our house foundation? It's kind of crumbling in places and needs a facelift. Ideas/options?
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0answers
138 views

How soon can I paint after filling cracks in a foundation?

I have a foundation that I am trying to get back into shape. I just wire brushed/scraped, power washed and dug out/filled in cracks using Quikrete vinyl concrete patch. I want to paint it now. I ...
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0answers
27 views

our walls in the basement are 4 ft wide are these walls made of concrete

My basement has a 4 ft wide ledge foundation around the basement, is this made of just concrete or dirt behind the concrete. We need to know because we want to finish the basement in wood.
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0answers
27 views

what to fill surface water drainage trench with

Cabin is at bottom of steep driveway. Water runs down and into crawl space. One very large ditch about 15 feet up gets most of it. This ditch gets remainder. On hand - 1 inch round stone, tyvek, ...
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0answers
35 views

Concrete slab insulation is in the way - cut it back for flooring?

I have a converted garage built on a concrete slab. The slab is insulated with styrofoam panels which extend into the room about three inches, so the flooring does not go all the way to the interior ...