Expertise. Quality. Service.

From the moment we meet, our only priority is to convert your sub-space from a hazardous liability into an expansion of your usable square footage. Leaky crawlspaces, cellars and basements alike are no match for our systems and services. Our technicians are experts at sealing up fieldstone, concrete block and cement spaces that get damp or fully flooded.

Professional Basement Waterproofing In West Virginia, Maryland, Pennsylvania, and New Jersey.

Believe it or not, it doesn’t take a lot of moisture to result in some very serious structural damage to your home. Whether it comes from outside water causing cracks in your foundation, bowing of the actual walls of your foundation, or even resulting in unsafe levels of mold and bacteria growth, if your basement is not totally waterproof you and your family can be exposed to some very unsafe conditions.

Protect Your Family

Keep your family healthy and happy by ensuring your hang-out spaces are professionally protected.

Commercial Waterproofing

Peace of Mind for your commercial rental property or business.

Sump Pumps

We have years of experience installing sump pumps of all all types and sizes.

Over 40 Years of Combined Experience In Our Field

Our expert crews are experienced in every aspect of the basement waterproofing industry.

Lifetime Warranty

We offer a lifetime warranty on all interior waterproofing products.

We Use Nothing But the Best

We only use top quality materials and products to ensure our work will last the life of the structure when waterproofing your basement.

"This company is absolutely top rank! They did everything they promised and more. Great value..."

"When dealing with Jeff the owner he provides options. He does not sell extras or overkill...."

"Very polite and courteous, knowledgeable about the job. Great guys."

"These men were customer friendly, and provided a clear understanding of the work they..."

"From start to finish Once and Done has been an the ONLY answer to our problem. And boy..."

"Contacted Once & Done Waterproofing for an issue with a sump pump. Within minutes into the conversation, I knew I was being provided with sound advice..."

"Showed up when they said they would, and did the work they said they would, for the price they said they would.. easy, but hard for a lot of contractors to do these days!"

"Excellent work, good solutions and advise. I would definitely hire them again."

"Kept me advised on progress, very professional and personable. Can't say enough good things. I..."

"I was very impressed with the quickness, professionalism, and quality of the work performed. E..."

"Excellent service from start to finish! I highly recommend!"

What Are The Benefits Of Waterproofing Your Basement?

Of course, everyone wants to live in a house that has a secure foundation, and no one wants to risk the health and safety of their family and loved ones, but there are many homeowners who don’t realize how important it is to have a waterproof basement. Let’s take a look at what the benefits to a dry basement really are.

Reduce Or Eliminate The Risk Of Flooding

There is always a risk of a basement flooding due to exceptionally heavy rain. In order to reduce your risk of property damage from water entering your basement, an experienced basement waterproofing company can provide peace of mind that when it’s coming down “cats and dogs” outside your home remains protected and dry.

Reduce Overall Moisture To Eliminate Mold

Moisture is mold’s best friend, and basements have a reputation for being damp. By waterproofing your basement you can rest assured that you’ve done your part to reduce moisture and that your family won’t be impacted by the negative health effects that go hand in hand when mold is allowed to grow in your home.

Increase The Integrity Of Your Foundation

Your basement is an integral part of your foundation. If your basement is not waterproof it will, over time, have a very detrimental impact on the structural integrity of your home.

Increase The Value Of Your Home

Whether you plan on living in your house for several decades or are considering a potential move in the future, you will increase the value of your home with a waterproof basement.

Increase Livable Space With A Finished Basement

Maybe you’ve been considering finishing your basement in order to have a play area for the kids, a guest room or a man cave. Before you begin planning your dream space you must ensure the basement is waterproof in order for you to get the most out of the space.