About Northern Illinois Waterproofing & Construction, Inc.
Northern Illinois Waterproofing & Construction, Inc. is listed here as a basement waterproofing and crawl space company in Arlington Heights, Illinois.
Its website, niwaterproofing.com, names foundation crack repair, crawl space foundation repair, foundation waterproofing and crawl space encapsulation. The quotes below link to the page where each one appears, so you can check them.
Service area on its website: Illinois.
Google Maps lists it as open 24 hours, every day.
Foundation services
- Foundation crack repair
- Crawl space foundation repair
- Foundation waterproofing
- Crawl space encapsulation
What Northern Illinois Waterproofing & Construction, Inc. says on its website
- Foundation crack repair
Foundation Crack Repair
niwaterproofing.com - Crawl space foundation repair
Crawl Space Repair Services
niwaterproofing.com - Foundation waterproofing
Sump Pump Services in Illinois | NI Waterproofing
niwaterproofing.com - Crawl space encapsulation
Our services include crawl space removal and reinstall, sealing and encapsulation, crack repair, waterproofing, dehumidifier installation and insulation upgrades
niwaterproofing.com
Quoted from its website, read in October 2026.
Inspections, warranty and payment
- Free estimate
for a free estimate
niwaterproofing.com
What its website says (October 2026). Ask for the warranty in writing and read what it covers before signing.
Opening hours
| Monday | Open 24 hours |
|---|---|
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
| Sunday | Open 24 hours |
As listed on Google Maps (July 2026). Call before visiting – hours change.
Northern Illinois Waterproofing & Construction, Inc. on the map
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Other pins: companies within 30 miles. Map data © OpenStreetMap contributors.
Before you call, ask about
- Interior drain, exterior membrane or crack injection – and why
- Whether a battery backup sump pump is included
- What the warranty promises: a dry basement, or only the system
- How they'll handle structural cracks or bowing walls, if any
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Questions about this company
How do I contact Northern Illinois Waterproofing & Construction, Inc.?
By phone at (847) 259-2700. Through its website, niwaterproofing.com.
When is Northern Illinois Waterproofing & Construction, Inc. open?
Google Maps lists it as open 24 hours, every day.
What foundation services does Northern Illinois Waterproofing & Construction, Inc. offer?
On its website it mentions foundation crack repair, crawl space foundation repair, foundation waterproofing and crawl space encapsulation.
Does Northern Illinois Waterproofing & Construction, Inc. offer free inspections?
Its website mentions “free estimate”. Ask what the visit includes and whether you'll get the findings in writing.
How much does foundation repair cost in Illinois?
Estimated for Illinois: sealing a crack about $248–$794; repairing a settling foundation about $4,468–$19,860, mostly depending on the number of piers. Try the cost calculator and compare written quotes.
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