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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4answers
26k 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 ...
4
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2answers
655 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 ...
3
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1answer
119 views

Is it OK to drill/notch an end joist (not rim/band joist) as long as it's continuously supported by a foundation wall?

I'm in the process of trying to run some CAT6 and speaker wire at various places in my house. One of the things I'd like to do is run speaker wire in the living room to a wall plate behind my sofa, ...
3
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1answer
151 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
412 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 ...
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0answers
27 views

What is an appropriate log cabin base depth?

I'm currently in the process of building the foundations for a 5m x 3m log cabin, using sand/cement with a 32mm layer of paving slabs. In accordance with the Tiger Sheds website I am laying down 40mm ...
2
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0answers
990 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
141 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
25 views

Yellow mesh material in slab foundation cracks

We recently purchased a home in central Florida, built in the late 80s, a stick-built home on a concrete slab. Today I noticed a small uplift and depression through the carpet. Touching the carpet, ...
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0answers
34 views

How can I fix my leaning garage wall

The gable wall in my garage is leaning. The sill plate seems to have slipped off the foundation. The sill plate is broken and the lower end of a stud is missing around where it's broken. The ...
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0answers
40 views

How to level a sloping concrete slab with a 2” difference?

I know this sounds bad and I need to give some backstory to not sound off the alarms... I’m going to give the main question first and then backstory below so you know I’m not crazy. Question: We have ...
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0answers
54 views

Cracks in bricks, needs foundation work or can it be watched?

This house belongs to my mother who is in her 70's. She already needs a new roof and is saving for that. As of now she can not really afford to fix foundation so I need honest opinions. Is this ...
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0answers
11 views

What should I use to seal cracks between stone foundation and sill beam?

I'm in the process of replacing subfloor and joist sistering and noticed some pretty serious gaps between the foundation and sill beam after clearing away the loose debris between joists. Would it be ...
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0answers
56 views

How to keep a screened in porch from leaking

We recently had a contractor bail on us without finishing the addition to our home. One of his many misdeeds was our screened in porch. It is On the second floor - above our new master bathroom ...
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0answers
42 views

My granite foundation was underpinned and has load-bearing 6x6 posts around the perimeter of the basement. How to repoint behind them?

My building has a granite block foundation supporting a brick structure above it. In the 80's, the building was gutted and the foundation was underpinned. They added load bearing posts around the ...
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0answers
110 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! ...
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1answer
42 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
61 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
37 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
26 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
39 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
174 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
36 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
93 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
619 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 ...
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1answer
320 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
48 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 ...
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1answer
123 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 ...
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1answer
38 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
147 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
615 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" ...
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0answers
122 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
176 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 ...
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2answers
790 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
55 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
90 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
86 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
4k 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
110 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
185 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
664 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 ...
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3answers
1k 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
783 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
736 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
116 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
778 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
352 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
757 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
564 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 ...