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Basement waterproofing & crawl space4.8(114 Google reviews)

Waterproofing One

Basement waterproofing & crawl space · Phoenixville, PA

4093 Hollow Rd, Phoenixville, PA(484) 410-4110waterproofingone.com
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About Waterproofing One

Waterproofing One is a basement waterproofing and crawl space company in Phoenixville, Pennsylvania.

On its website (waterproofingone.com) it mentions foundation crack repair, crawl space foundation repair, bowing basement wall repair, foundation waterproofing and crawl space encapsulation. The quotes below link to the page where each one appears, so you can check them.

Its website mentions 30 years of experience.

Opening hours on Google Maps: Monday to Friday 8 am–8 pm; Saturday 8 am–6 pm; closed Sunday.

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Foundation services

What Waterproofing One says on its website

Quoted from its website, read in October 2026.

Inspections, warranty and payment

What its website says (October 2026). Ask for the warranty in writing and read what it covers before signing.

Opening hours

Monday8 am–8 pm
Tuesday8 am–8 pm
Wednesday8 am–8 pm
Thursday8 am–8 pm
Friday8 am–8 pm
Saturday8 am–6 pm
SundayClosed

As listed on Google Maps (July 2026). Call before visiting – hours change.

Waterproofing One on the map

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Other pins: companies within 30 miles. Map data © OpenStreetMap contributors.

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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 Waterproofing One?

By phone at (484) 410-4110. Through its website, waterproofingone.com.

When is Waterproofing One open?

Opening hours on Google Maps: Monday to Friday 8 am–8 pm; Saturday 8 am–6 pm; closed Sunday.

What foundation services does Waterproofing One offer?

On its website it mentions foundation crack repair, crawl space foundation repair, bowing basement wall repair, foundation waterproofing and crawl space encapsulation.

Does Waterproofing One offer free inspections?

Its website mentions “FREE QUOTE”. Ask what the visit includes and whether you'll get the findings in writing.

How much does foundation repair cost in Pennsylvania?

Estimated for Pennsylvania: sealing a crack about $246–$788; repairing a settling foundation about $4,432–$19,700, mostly depending on the number of piers. Try the cost calculator and compare written quotes.

Foundation repair near Phoenixville

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