Quick Water Management Tips

Rain Harvesting Fact

A 1,000 square foot roof sheds 623 gallons of rainwater from one inch of rainfall offering you the opportunity to collect thousands of gallons of “free” water for reuse in your garden.

Waterproofing Fact

Winter snow ground thaw and late winter rains can lead to higher ground water conditions, which can create foundation wall and below slab water infiltration.



Cosella-Dorken Recognizes National American Waterproofing

Every once in a while, we get to step back and see the progress we've made growing the business into one of the leading waterproofing companies in the northeast region. While we don't work for accolades, it sure is nice to occasionally get them. Here's the full text of a letter we received from one of our suppliers - Cosella-Dorken Products, Inc.

I would like to extend my gratitude and appreciation to National American Waterproofing for the outstanding workmanship conducted year-after-year as a Certified Installer of our DELTA®-MS waterproofing system for foundations. 

Thus far you have seamlessly installed over 1,500,000 square feet of DELTA®-MS; every one of your installations produced superior quality and attention to detail. National American Waterproofing is without a doubt a key component in our success in the market place. 

Thank you very much for all your great work!

Thank You.

With kind regards,


No problem, Chad! We look forward to many more years working together helping our clients alleviate their water issues.

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The Popielarski Family


The efficiency and work ethic of your staff is reflected in the finished product of which we are totally satisfied.

-- Joe & Nancy Popielarski