Lawson Waterproofing




About US

Generations of Experience

Three generations of waterproofers, Lawson Waterproofing is family owned and provides the highest quality work with the highest quality materials.

We have experience waterproofing high profile places, such as SUNY Stony Brook, Stony Brook Hospital, NYU Langone, Hofstra University, Hudson Yards – the list goes on. So when it comes to keeping our residential customers dry, suffice it to say, we know what we’re doing.

Lawson Waterproofing seeks to serve our customers with the highest degree of integrity. We will stand by our warranties and be ready and willing to help with any problems in the years to come.


Schedule A FREE Appointment

All estimates are free and flexible – we’ll work around your schedule.



Seth installed three sump pumps and dug our french drain. Since then, we’ve had no water issues and plan to use him again the the future! Thanks, Seth!
— Colleen Kelske, Bay Shore
I hired two contractors to help fix my leaking storm windows, BUT it wasn’t until Lawson Waterproofing was hired that they final stopped leaking. They were clean, respectful, worked fast, and clearly knew their craft!”
— Constance Dill, Patchogue
Frankly, I had no idea how water was getting into my basement and needed help ASAP. Seth identified the root cause, hand dug the outside of our foundation, repointed our cinder blocks, and got it all taken care of quickly. Highly recommend.
— Ryan McArdle, Bellport



We work using the best materials available and provide a 1-year guarantee on all labor. We will never compromise quality for time and we give our clients realistic schedules that accommodate their lives. We strive for honest customer service, so contracts are only paid in full when the finished work is to your complete satisfaction.

About The Owner


I’m the third generation of a long line of roofers and waterproofers – keeping homes dry since I was old enough to work (which is probably younger than is legally allowed :). I prides myself on providing the highest quality of work and the best materials available to get the job done.