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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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 ...
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717 views

Remedies for brick veneer movement

This property is on a walk-out basement foundation in a heavy clay soil. In several places, the brick veneer has moved, cracking and causing misalignment as pictured. The one pictured is by far the ...
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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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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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1answer
34 views

New home foundation

I have a question. I am thinking of buying a newly constructed home. I was at the site the day before they started putting up the cinderblocks for the slab foundation. I was sinking past my ankles in ...
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2k views

Can cement backer board be used to support bluestone or slate outdoor raised patio?

We are designing a multi-level stone patio. To exit the kitchen directly onto the stone patio, the highest part of that patio would be 12 inches above the foundation. The next level would be flush ...
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1answer
64 views

How to determine if my house is continuing to settle?

My house has settled a bit since it was built 100 years ago, especially the porches which aren't over the main foundation. It seems to me that some doors have become harder to close over the past 2 ...
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1answer
234 views

How best to repair 24 sqft dirt hole in concrete slab

I have a hole in the concrete slab of my foundation approximately 4' x 6'. The slab was originally poured directly on the dirt. The slab is approximately 4" thick with rough edges. The hole is ...
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3answers
684 views

How to repair rotted sill plate on foundation concrete pony wall and adding height to concrete wall

I have an end unit townhouse built in 1986. It's three stories including the garage level, and it's built on a slope. The garage level opens to the street in the back, but that level is below grade on ...
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1answer
92 views

Large rock obstructing addition

I potentially have the problem of building an addition to a house where the bedrock comes up alongside the house. So, basically there is a large rock formation obstructing the construction of the ...
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1answer
93 views

Anchor In Foundation Doesn't Seem Right

I am getting a house built, and it looks like one of my anchor bolt wasn't placed correctly (not inside the wood). I compared with a they dont all appear to be like mine. Should I be worried about ...
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2answers
2k views

What is the code-mandated overlap of welded wire mesh in concrete slabs?

I'm trying to find a code reference for welded wire reinforcement in residential concrete slab foundations. I though it was 6" overlap of the sheets, but some sources are saying it's more. Does anyone ...
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2answers
193 views

How to fix old un-suppported basement wall in house that has had added basement?

I have an older house (circa 1919) that was built without a basement (just a crawl space). About 1965 a basement was added. Along one of the old concrete foundation walls there is a 7 foot section ...
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1answer
5k views

Basement cinder block looks damp after rain storms

We built a new house last year and it was completed in June. Ever since we’ve lived here I notice the basement block walls seem to look damp in areas, especially after a rain storm. I’m certain there ...
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1answer
1k views

Water coming in through seam in bulkhead wall. How to fix?

There is a caulked seam where the bulkhead wall comes into contact with the foundation wall. It is raining outside and water is now coming in through the small cracks in this seam. It is causing the ...
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1answer
214 views

What equipment can I used to dig a foundation very close to another structure?

I only have 7' between houses to get a backhoe/trench digger in to dig a house foundation. Any suggestions on a machine to use?
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107 views

foundation repair: bedrock or not?

I have a settling foundation. I see a couple of ways to repair the foundation; one with hand dug concrete piers about 3 feet deep, one with steel piers driven to bedrock. Will concrete be ...
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117 views

Why is a corner of our garage floor slab all uneven?

Our house was built ~1985, and it has quite a few oddities. One of them is an irregularly shaped corner of our garage. Our garage is ~32' (9.75m) x 32' (9.75m), and a significant section (not square ~...
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179 views

Ok to add basement egress window underneath giant grade-level window?

Our one-story house has a very large window on the first floor -- appx. 72" high by 130" wide. I'd like to add a basement egress window to the room below. I'm worried that having more glass than wall ...
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1answer
150 views

New construction home, loose foundation anchor nuts

I am going around caulking behind the insulation due to drafts. Part of basement sits above ground, as house is built on slope. Many of the nuts on these foundation anchors are loose. I have been ...
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2answers
86 views

Reinforcing concrete parapet?

One small section of our roof's parapet looks like this. We will be installing one 3/8" x 3" havy-duty concrete screw anchor in that area. The ideal solution is to remove and replace with new ...
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1answer
2k views

Sill plate wet in corners

My sill plate is getting wet. I have a 6 foot overhang so rain is not getting to it. Im trying to figure out how to deal with it. The sill is not pressure treated unfortunately. The foundation is ...
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4answers
177 views

Channel between foundation wall and floor in crawlspace

I have a split level house with a crawlspace. I've pulled the insulation out and discovered some minor mold issues on the wood framing and concrete walls. I removed the framing to replace any moldy ...
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1answer
171 views

How should plywood sheathing be detailed around bolts/bearing plates in seismic retrofit work?

The City of Los Angeles standard planset for seismic retrofits shows the anchor bolt's bearing plate (washer) resting on the sill plate (vs. resting on the 2x blocking of the shear wall). But there is ...
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2answers
1k views

Sealing gap between foundation and external wall

I'm trying to determine how to address a small gap between my foundation wall and the bottom of the house. I believe this gap is being used by vermin to access a crawlspace and travel up the walls. ...
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1answer
103 views

Prevent Rodent incursion along a retaining wall

I live in a first generation suburb. The retaining wall behind me is starting to crack, but it is not mine to permanently fix. After I concrete over any cracks in the retaining wall, I would like to ...
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0answers
68 views

Are these cracks in a basement support wall normal?

I'm looking at a 1930's-era house that has stone foundation walls. The basement seems to have been dug out and it looks a wall was built to abut the exterior wall. The wall has a plaster or stucco ...
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3answers
386 views

Weight a foundation can hold [closed]

Would a 6" slab with mesh, rebar and fiber hold a 2 story log home made from hemlock logs that are 16" wide? The mesh will be doubled up on the outer edges and rebar will run both ways. It's 32x40.
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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" ...
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2answers
188 views

Can I use both a concrete slab and crawl space foundation?

I plan on building a large shop building on my property and while I want the main shop area to be a thick concrete slab, it would be great if I can make the adjoining rooms have a crawl space-like ...
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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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61 views

What type of insulation and waterproofing (if any) should be done for a monolithic slab on grade?

When building a new residential home with a monolithic slab on grade (footer and slab are poured at the same time), should any water proofing, insulating or drainage be added besides the vapor barrier?...
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1answer
756 views

Is there any way to do an Ufer (concrete-encased) ground with a monolithic slab that has a vapor barrier?

If I understand correctly, when using a monolithic slab (where the footers and slab are poured as one piece), the vapor barrier is installed under the slab and the footers. The NEC does not consider ...
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120 views

Is deck flooring an OK alternative to a concrete slab for a sport court?

I'm thinking of building a sports court for mostly inline hockey. Similar to this one. I have a land with grass and was wondering if there is another way to create a base, foundation under the floor ...
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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 ...
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2answers
955 views

What kind of paint should I use to paint a field stone foundation wall?

I have a 1900 house with a field stone foundation. The foundation is in good shape. There is minimal moisture. I want to paint the walls to make it look nicer. What kind of paint should I be using? I ...
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2answers
134 views

How to install drain in a wall above concrete foundation

I am usual successful finding answers with enough searching but it seems I've hit a dead end here. Just started a kitchen remodel in our 104 year old home. Looking to move our kitchen sink to an ...
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2answers
572 views

Precast cement stairs bolted to foundation

We are attempting to sell our 1969 split level and one of the issues we have is our precast cement stairs. They are attached to the cinder block wall foundation with bolts. This caused about a 1/2 ...
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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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1answer
928 views

How to suspend rebar cages for piers

Hello. We are converting a former metal portable building used for a school classroom in to a living space. We have got all the site plans, remodel plans, electrical and foundation ECT. We are trying ...
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1answer
176 views

Deer skinning pole design

I would like to build a deer skinning pole, about 8 ft tall. Here is my simple design: My questions are: How deep should I set the pressure treated 4x4 in the concrete base to be able to safely ...
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1answer
580 views

Shift Concrete Column by few inches [closed]

While building the foundation of a house, the concrete columns were built 15cm (6 inches) from the planned position, which is reducing the space for a door. So we need to shift the column by 6 inches....
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1answer
44 views

Alternative ways to insulate a shallow slab foundation?

I would like to turn a shed on a shallow slab foundation into a living space for a family member. Insulating the roof and walls seems straight forward enough, but the floor and foundation are tricky. ...
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1answer
147 views

Greenhouse wood foundation and frost heave

I'm a novice constructing a 8x12' saltbox style green house made from recycled single pane windows in climate 5 & 4 Marine. It does get freezing here in winter with maybe an inch to three of snow ...
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2answers
76 views

Identifying metal post next to a house

Next to my house is part of a metal post. It looks like it has been cut off at the top. I would like to remove it, but am not sure what it is. I know it's not a grounding rod, but there is some ...
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2answers
1k views

How are grade-level garage slabs typically connected to a basement wall?

When you have a basement wall that needs to join up to a garage slab at the top of the basement wall, how are the footings for the garage slab placed, and how does the garage slab attach to the ...
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1answer
150 views

crack in foundation wall, QUIKRETE Hydraulic Water-Stop Cement

I'm in the middle of repairing a crack in my 30+year foundation wall using QUIKRETE Hydraulic Water-Stop Cement. It's been repaired before, I've been in the house for over 10 years, previous owner ...
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1answer
1k views

How can I extend existing vinyl siding downward to cover top of concrete foundation?

Our new-to-us 1930's home has vinyl siding, but the bottom row of the siding doesn't extend down far enough (see photo). There isn't a starter strip installed that I can find anywhere, either. It ...
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1answer
105 views

How To Sand, Patch, Prime & Paint Exterior Foundation?

Our 76 year-old block foundation needs a facelift before new vinyl siding is installed above it. This seems like a simple, inexpensive DIY project but just to make sure the paint doesn't peel by ...
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1answer
5k views

2x6 or 2x8 Sill Plate on 8" foundation wall?

I have a 8" thick concrete foundation, and am wondering if I should use 2x6 or 2x8 PT for the sill plate. I believe 2x6 would be substantial, but if I use 2x8 I would have something to fasten to on ...