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Permanently fix your wet basement yourself!

✔  Do-it-yourself, easy to install

✔  40+ years of proven success

✔  No busting up your basement floor

✔  Only $6 per foot + FREE SHIPPING!

Interior Do-it-yourself
Basement Waterproofing System

When soil around your foundation becomes water-saturated, hydrostatic pressure forces water up through the joint where your floor and walls meet. The SealOnce Basement System can cure that problem. It’s designed as a hollow PVC baseboard to collect the seeping water and quietly drain it to your floor drain or sump pump.

Interior Do-it-yourself
Basement Waterproofing System

When soil around your foundation becomes water-saturated, hydrostatic pressure forces water up through the joint where your floor and walls meet. The SealOnce Basement System can cure that problem. It’s designed as a hollow PVC baseboard to collect the seeping water and quietly drain it to your floor drain or sump pump.

4 ft Main Section

Open back collects water for full length of basement – quick drain channel design! Easy to handle 4-foot sections.

SealOnce Adhesive

NEW! Exclusive waterproofing sealant bonds water-tight in wet or dry conditions!

Inside Corner

Pre-molded inside corners shortens install time and makes for a clean, professional finished look!

Outside Corner

Easy to install pre-molded outside corner.

Butt Joint

Connects main sections end-to-end sealing the channel water-tight.

End Cap

End caps are used to dead-end the system.

Drain Port

Connects the system to a sump pump or floor drain.

New! SealOnce

Tool Kit

Perfect SealOnce Tool Kit includes two bullnose tools to create a watertight seal. Use the square-nose tool for easy clean up.

Limited time offer – Free Shipping on $225 or more!

HOW TO ORDER:

Step 1Measure Your Basement

Watch the 60 sec video and get all the measurements you need without moving any furniture! You need 3 measures: Your basement’s linear footage, number of inside and outside corners.

Enter Into Project Calculator

Enter your 3 measurements into the project calculator below and click calculate! Based on your measurements, we’ll create your custom SealOnce Basement Kit with everything you’ll need to waterproof your basement.

Enter Your Basement Measurements:

AS SEEN IN

Why more homeowners trust SealOnce in their homes!

 

  • Over 40+ years of proven success
  • No busting up your basement floor
  • Permanent fix to a wet basement
  • Bonds watertight in wet or dry conditions
  • Easy weekend project

HOW IT WORKS

Most wet basement problems are caused by water collecting around the foundation creating hydrostatic pressure. The pressure forces water through the joint where the wall and floor meet, and even through cracks and pores in the concrete  block walls. The SealOnce Basement System solves the problem by doing what paints, plugs and sealers can’t do – it collect the water and quietly drains it away to your floor drain or sump pump.

Pressure is relieved by drilling holes in the concrete block cavities at floor level. The SealOnce Basement System hollow baseboard is then installed along the walls and sealed to the floor with our exclusive, contractor-grade SealOnce Adhesive. When water collects around the foundation, it seeps from the holes in the blocks, and from the seam where the wall and floor join, into the hollow baseboard and directed to your floor drain or sump pump.

EASY TO FOLLOW INSTRUCTIONS

Included with every order is our easy to follow step-by-step installation guide. If you have any questions during your install we’re here to help. Just give us a call at 651-644-2000 for quick support.

Included with every order is our easy to follow step-by-step installation guide. If you have any questions during your install we’re here to help. Just give us a call at 651-644-2000 for quick support.

REAL PEOPLE. REAL SUCCESS.
Have not had a drop of water on the floor since and we can once againuse the room to store things without worry of water damage. I was so impressed that I installed it in the other areas of the basement. I’m a woman and I did all this with NO help – very easy!
Peggy Yehl

I did the basement of my fiance’s (now wife) house in Madison, WI 3 years ago before she sold it to move in with me. It was a mid-50’s house on a small lot. The surrounding neighbor’s yards all were of higher elevation and flowed into her yard.

One neighbors house was merely 10′ away and both rooflines dumped into this narrow breezeway. This was also the only avenue of escape for all of the water in the backyard. She often joked about her “water feature” which was located in the basement.

Over the course of 12 years she spent 1000’s of dollars on gutters and landscaping, including hiring a landscape architect who installed many deep-rooted plants and even a French drain. Even with all of this she still had problems. Being a contractor I knew that there had to be something I could do, and after much research I found this amazing product.

It was easy to order, easy to install and has worked amazingly!! Drying up the basement allowed me to fix all of the ruined drywall, lay new carpet and flooring, and reclaim the basement as usable space in a tiny 750 square foot home. Directions are very simple and the average do-it-yourselfer could perform it themselves.

Bart Bartos

I installed this system in my finished basement in spring of 2016 after the rainy season. It was tested last weekend during the record rainfall in MO. The system worked flawlessly.
James Meeks

Nice quick and easy – anyone can do it and best of all save a lot of money!!

Mark Mullet

Thought you might like to see how your system turned out for us on a rental house we own. We had water all the time in this basement and decided to tackle the issue ourselves. We are seniors and found it to be very easy to do. Instructions were great. We had to work in a lot of water and that did make the job more difficult but with your system and another product to repair the cracks in the floor and then coat the entire floor we now have a dry basement. The total transformation is incredible. I am glad that we researched and found your system. Thanks for a great product for the do it yourselfers.

Ken & Patty Merritt

COMMON HOMEOWNER QUESTIONS
For many homeowners the SealOnce Basement System is the first time they’ve had access to a professional-grade basement water control system they can install themselves and often have a few questions. Below are answers to the most common questions first time homewoners ask.
How will water flow if my floor is uneven?
SealOnce Basement System stands 4-inches tall to allow for uneven floors. As water around your foundation rises, it begins to flow into the channel. Water flows naturally toward any low spot or drain.
Will water remain standing in low areas of my SealOnce Basement System?
When the water stops flowing out the drain or sump pump, you know that the SealOnce Basment System has finished its work. With the water level now lower than the floor, any water left standing in the channel flows back out through the weep holes or joint where the floor and walls meet for poured foundations.
Will the SealOnce Basement System require maintenance?
The SealOnce Basement System is made of PVC, the same as the water pipes in your home. An attribute to PVC is that it will not support algea that causes odors. The SealOnce Basement System itself needs to maintenance.
How long will the SealOnce Basement System last?
The SealOnce Basement System is a permanent installation. Systems installed in 1965 are working today, just the way they did when originally installed.
Why do I need to drill weep holes?

Hydrostatic pressure is relieved in block wall foundations by drilling weep holes in the concrete block cavities at floor level. The hollow DIY basement waterproofing channel collects the seepage. The baseboard is not attached to the wall, it allows air to circulate within the block cavities to help keep them dry. It also provides a source of disposal for upper-wall moisture to enter the channel.

How will the SealOnce Basement System work with poured concrete, brick or stone walls?

SealOnce Basement System works with any type of basement wall because the main sections are not glued to the walls. They simply rest against the face of basement walls. The top of the system is left open to allow any water seepage from the face of the walls to enter the system. The top the main section curls back creating a mini-trough directing the water behind and into the channel.

Can I finish my basement after installing the SealOnce Basement System?
Absolutely! You can easily box out and frame around the SealOnce Basement System, install drywall and other finishings in your new basement.

Still have questions?
Call us. We’re here to help.
(651) 644-2000