Foundation Crack Repair in New Jersey
Most leaking cracks in poured basement walls are vertical shrinkage cracks, and injecting them from inside with epoxy or polyurethane stops the water. Horizontal cracks, stepped cracks in block, and walls bowing inward are signs of pressure that need an engineer's assessment first.
Cracks are radon paths
NJDEP names cracks in flooring and other openings among the ways radon gets into New Jersey homes. In Hunterdon County, Readington Township had about 40% of tested homes at or above 4 pCi/L in the 2015 report and Clinton Township about 36%.
Sealing cracks reduces one route, but a radon system, if one is needed, must be installed by an NJDEP-certified business unless you do it yourself on your own home.
When to call an engineer
- Cracks wider at one end than the other
- Horizontal cracks along a block course
- Walls leaning or bowing inward
- Cracks that reopen after being sealed
- Upstairs doors and windows that start sticking
Written contracts in New Jersey
Crack repair can be a small bill, but New Jersey still requires any home improvement contract of $500 or more to be in writing with the contractor's registration number. You have three business days to cancel after signing.
Foundation Crack Repair questions
Will sealing cracks fix a high radon test in New Jersey?
Rarely by itself. Retest afterward; if it's still 4 pCi/L or more, NJDEP recommends mitigation by a certified business.
Epoxy or polyurethane?
Epoxy bonds a stable crack and restores strength; polyurethane stays flexible and is often used just to stop water. Ask which and why.
Does a crack repair need a New Jersey contract?
If it's $500 or more, yes: in writing, with the contractor's registration number and your three-day cancellation right.
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