Most foundation cracks are not an emergency. Some are. The job is telling which one you have, and that is what the free inspection is for. Crack repair at 603 runs $1,000 to $3,000.
Which cracks should worry you?
Rough guide, and it is a guide, not a diagnosis:
- Thin vertical cracks are the most common thing we see and usually the least alarming. Concrete shrinks as it cures and it has to give somewhere.
- Horizontal cracks are the ones to take seriously. A horizontal crack in a foundation wall can mean the wall is being pushed on from outside.
- Stair-step cracks in block walls follow the mortar joints and can point to movement.
- A crack that is wider at one end than the other suggests something is moving rather than just shrinking.
- Any crack that is actively leaking needs handling regardless of shape, because water gets in and does its own damage.
If you can fit a quarter into it, or it has visibly changed since you first noticed it, call somebody. Us or anyone.
How we fix them
For a non-structural crack that leaks, injection fills the crack through its full depth and seals the path the water was using. For a structural crack, epoxy injection restores the bond across it. Where a wall needs real reinforcement, carbon fiber straps or a power brace do that work, and those are different jobs with their own prices.
What we do not do is smear something on the inside and call it fixed. A surface patch on a leaking crack hides it for a season.
When we tell you not to buy
Sometimes a homeowner is bracing for a full system and what they actually need is one crack filled. When a full system is out of budget, fill the crack and don’t look back. We will tell you when that is the situation, and we would rather do the small job right than talk you into the big one.
The reverse is also true. If you have got water coming in at the floor wall joint all the way around, filling one crack is not going to solve that, and we will say so.
The warranty
Non-structural crack injection carries a 10 year warranty on leakage through the treated area. Structural epoxy injection carries 10 years on the structural bond. Wall stabilization carries 25 years against further inward movement within design tolerances.
Read that first one carefully. Ten years on the crack we treated not leaking is not the same as ten years of a dry basement, because the crack we filled may not be the only way water gets in.
Questions we get
Can I fill it myself from the hardware store?
You can, and for a hairline shrinkage crack that is not leaking it may hold fine. For anything structural or anything wet, a surface product is a temporary measure.
Will it crack again in the same place?
A properly injected crack is not usually the one that comes back. New cracks elsewhere can happen as a house keeps settling.
Do you fix cracks in a slab floor?
We look at them. A floor crack and a wall crack are different problems.
How long does it take?
Most crack repairs are a few hours.
Crack shapes, and what they usually mean
| What the crack looks like | What it usually means | How urgent |
|---|---|---|
| Thin and vertical | Concrete shrinkage as it cured | Usually low. Seal it if it leaks |
| Horizontal across a wall | The wall may be under pressure from outside | Get it looked at |
| Stair-step through block joints | Movement following the mortar | Get it looked at |
| Wider at one end than the other | Something is moving, not just shrinking | Get it looked at |
| Any crack actively leaking | Water has a path in | Handle it regardless of shape |
| Hairline, dry, unchanged for years | Often nothing | Watch it. Note the date |
How the job runs
Somebody looks at the actual crack. Shape, width, whether it is wet, whether it lines up with anything else the house is doing. That is a short visit and it is free, and it is the only honest way to tell a shrinkage crack from something that matters.
You get told which one you have got. If it is the small one, we will say so, and we would rather do the small job right than talk you into a system you do not need yet.
The repair itself is usually a few hours. Injection fills the crack through its full depth rather than skinning over the face of it, which is the difference between a repair and a cosmetic patch that looks fine until the next wet spring.
If the wall needs real reinforcement, that is a different job with its own price and its own timeline, and we will lay that out separately rather than folding it into a crack quote.
The Needham number that should change how you think about this
In March 2010 Needham took extensive flood damage: one flood insurance claim and 231 disaster claims, 99 percent of which were outside the mapped FEMA flood zone (Town of Needham Hazard Mitigation Plan).
Read that again, because it is the most useful fact on this page. Almost none of the damage happened where the flood map said flooding happens. The town’s five repetitive-loss properties, all single-family homes, are also all outside the mapped flood zone.
If you have ever been told your house is fine because it is not in a flood zone, Needham’s own record is the counter-example.
Why that happens here
Most wet basements have nothing to do with a river. They are about water in the soil beside the wall, and Needham’s soil data explains a lot.
A densic restrictive layer sits under about 14 percent of the town, and lithic bedrock restricts another 9 percent, with Hollis soils hitting bedrock at a representative 38 to 41 centimetres (USDA NRCS soil survey, clipped to the Needham boundary). That is barely more than a foot down in places.
Water coming down through the soil stops at that layer and moves sideways. Drainage class backs it up: 12.6 percent of the town is very poorly drained and 15.7 percent of its acreage carries soils rated hydric.
Needham’s own plan is blunt about what that means, naming soils that drain poorly as a constraint on development.
Where the town has already spent money
Town staff named the recurring trouble spots, including Hunnewell Street, where catch basins and culvert capacity were judged inadequate and the town designed a larger drainage pipe at a cost of $75,000.
Needham sits entirely inside the Charles River watershed and is bordered on three sides by the Charles, and it is covered by just two USGS quadrangles, Natick to the west and Newton to the east.
Needham is the furthest south we go. That is town-scale mapping above, not a verdict on your address, and the look is free.
What our customers say
Great bunch of guys who know their stuff, are passionate, and can tackle a problem with nuance, strategy, and quality. Branden and Justin showed the care and devotion to helping me with my radon problem as if it were their own such that I was happy to pay this company money. Mine was a complex situation and they were very willing to work with my to troubleshoot and settle on a solution. Because of that I would recommend them to anyone.
Brendan Cavanagh, Google review, 5 stars
That is one of more than 240 Google reviews. We would rather you read them than take our word for anything on this page.
Related pages for Needham
- Basement waterproofing in Needham
- Structural and foundation repair
- Which foundation cracks matter
- Every town we cover
- Who you would actually be dealing with
- Basement waterproofing
- Straight answers to basement questions
Book a free inspection in Needham
Somebody comes out, looks at the actual space, and tells you straight what it needs and what it does not. You get a written number for a defined scope. No two hour pitch, because we would rather be at the next house.
If you are looking for a team that isn’t going to treat you like another number, we would be happy to give you an estimate free of charge. We don’t cut corners. We stand behind our work. We care.
Call 603-610-1770 or book your free inspection. We cover Needham and the surrounding towns from our shop in East Kingston, New Hampshire.
Common questions about foundation cracks
- How do I install a sump pump in my basement if there is no hole in the foundation?
- How do I prevent rodents and snakes from entering a fieldstone foundation?
- How do you put up a deck ledger board on a 100-year-old gravel foundation?
- How do you repair a crumbling concrete foundation that juts out?
- How do you replace a foundation in an old house?
- How do you replace a portion of a rotted sill plate and studs?
- How hard and expensive is it to repair a crack in the foundation on a house?
- How much bowing is acceptable for basement walls?
- How much does a 1000 square foot foundation cost?
- How much does it cost to fix a house foundation issue?
- How much does it cost to fix a leaking foundation?
- How much does rebuilding your house’s foundation cost?
More 603 services in Needham
- Basement Waterproofing in Needham, MA
- Basement Finishing in Needham, MA
- Crawl Space Encapsulation in Needham, MA
- Radon Mitigation in Needham, MA
