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Crawl Space Repair & Encapsulation

Crawl space moisture means crawl space mold. Mold creates health problems for your family.

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Sagging floors and unpleasant odors might seem like the norm to homeowners with a crawl space. But these common crawl space problems are far from normal. 

The condition of your crawl space greatly influences the health and safety of your home overall. Problems that stem from moisture and excessive humidity include mold growth that can be dangerous for many people to breathe, as well as wood rot that compromises your home’s structural integrity.

These issues are serious, but they’re not beyond repair! JES Foundation Repair specializes in crawl space encapsulation that will protect your home for years to come.


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Causes of Crawl Space Issues

Here's what's compromising your crawl space:

Open crawl space vents let in moisture, which creates the perfect environment for wood rot, mold, mildew and dust mites. Plus a vented dirt crawl space can also cause your energy bill to be nearly 20% higher!

Exposed dirt in your crawl space absorbs moisture open crawl space vents allow inside. As damp soil dries, it rises through your house, changing relative humidity inside your home, contributing to high energy bills.

Spring showers are great for your flowers & landscaping, but create problems for your crawl space. Extra moisture forces the soil to expand & press against your crawl space foundation, eventually causing cracks.

If your home doesn’t have a drainage system in place, then all the water that flows out of your gutters or roof will land near your foundation. That water forces the soil to expand & will push against your crawl space foundation, forcing water in & creating cracks.

Most of us think about the damage to the inside of our home when we find a plumbing leak. Those problems spread to your crawl space. Cracks in pipes or water lines leading to your home create a mess out of your lawn but can also harm your foundation, & create water damage in your crawl space.

Award-Winning Service

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Very friendly, Rafael ,Jose,& Wilson

Very friendly, Rafael ,Jose,& Wilson

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I was very impressed with Andre Williams as my service technician. He was prompt and professional and spent time talking with me and…

I was very impressed with Andre Williams as my service technician. He was prompt and professional and spent time talking with me and explaining what he was looking at and telling me about it. He was great to talk with and a nice guy.

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Crew placed a French drain, new sump pump, water sealed foundation wall and replaced sump pump at rear of house in 2 days. Prompt,…

Crew placed a French drain, new sump pump, water sealed foundation wall and replaced sump pump at rear of house in 2 days. Prompt, courteous and thorough answers to questions. Team included Derrick trask, Kean Smith, Ronnie west and Ron and even field supervisor Jason and sales rep Phil Dutton. Pre work construction marking coordination by office rep Charles. The entire team were very patient with me the homeowner throughout the process to explain the work being done.

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Great job as usual Feiross **********— you and Phil make a great team!

Great job as usual Feiross **********— you and Phil make a great team!

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Outstanding service! The associate was on time and explained what they were looking for and what kind of service he suggested I receive!…

Outstanding service! The associate was on time and explained what they were looking for and what kind of service he suggested I receive! Very knowledgeable and true professional!

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Chad Edwards inspected my house today. He was very professional and did a great job teaching me the various options to eliminate and …

Chad Edwards inspected my house today. He was very professional and did a great job teaching me the various options to eliminate and prevent moisture from my crawl space. Thanks for answering all my questions Chad.

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I am very pleased with the service that I received from A1 Plumbing’s service technician “Lee”. He was very knowledgeable and pleasant. I…

I am very pleased with the service that I received from A1 Plumbing’s service technician “Lee”. He was very knowledgeable and pleasant. I had a leak in my kitchen that was ruining several of the vinyl laminate floor planks. I needed to know where this leak was coming from. I had just replaced my refrigerator and dishwasher and had them professionally installed. He traced my water lines and found a slow leak in one of the water lines leading to an old kitchen heater. He explained to me what he could do to fix the problem and we scheduled a time for him to make the repairs. Repairs have been done and no more leak. I highly recommend A1 Plumbing.

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The JES team: Christopher Gonzalez, Joel Larios, and Arcy Parra, were great, very professional. I was curious about the process of placing…

The JES team: Christopher Gonzalez, Joel Larios, and Arcy Parra, were great, very professional. I was curious about the process of placing piers in the ground to stabilize my foundation and Christopher walked me through the whole process explaining the work they were doing and what to expect along the way. I like that their work has a lifetime warranty as well.

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Chris was great to work with. Appreciate is extra effort to make sure we were satisfied with the work.

Chris was great to work with. Appreciate is extra effort to make sure we were satisfied with the work.

Mohammed Tasneem Anwar

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Kavon and Justin did a thorough, efficient and quality repair of our stamped concrete, leveling and jacking the concrete slab. Amazingly…

Kavon and Justin did a thorough, efficient and quality repair of our stamped concrete, leveling and jacking the concrete slab. Amazingly quick and efficient. We're very satisfied with the workmen, workmanship and finish.

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Our Certified Field Inspector, Matthew Grosse, did an exceptional job!! After thoroughly inspecting our foundation and crawl space, he…

Our Certified Field Inspector, Matthew Grosse, did an exceptional job!! After thoroughly inspecting our foundation and crawl space, he provided detailed photos of the entire area, walked us through the issues and gave us a comprehensive plan to mitigate the problems with our foundation and crawlspace. He explained the permit process, the work to be performed, and the expected outcome. He answered all of my questions and made me feel good about the project. The work will be warranted for life and the warranty is transferrable. We also received a great military discount! Thanks to Matt for his expertise and personal attention!!

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Received timely, professional service, and problem was fixed promptly. Would definitely recommend.

Received timely, professional service, and problem was fixed promptly. Would definitely recommend.

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I had my sidewalk, walkway, and cement patio fixed. The company and workers did a great job. Professional and knowledgeable group. Work…

I had my sidewalk, walkway, and cement patio fixed. The company and workers did a great job. Professional and knowledgeable group. Work was done on a timely matter. Thanks to Matt, Nick, Stacey, Jose (the other guys with Jose).

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To be honest, I have been having issues with JES since we moved into our house. I always felt like we were trying to be scared into buying…

To be honest, I have been having issues with JES since we moved into our house. I always felt like we were trying to be scared into buying a service. However, Ethan came out today and he was the first technician that made me feel like I was actually heard and did exactly what I wanted him to. Plus, he was seriously so happy and a big ball of sunshine! Ethan actually changed my perception about my past service calls with JES. If I had to recommend a technician from JES, it would definitely be Ethan!

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I had two guys come out to replace a sub pump in my basement work for JES and these guys were so professional, very knowledgeable and kind….

I had two guys come out to replace a sub pump in my basement work for JES and these guys were so professional, very knowledgeable and kind. Josue Mejia and Jose Estrada know their work and didn't hesitate to answer questions that you may have. Keep people like them on your team and we need more like them.

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Chris was great! He arrived on time and showed me the problem and fixed it promptly. He cleaned up and the price was fair.

Chris was great! He arrived on time and showed me the problem and fixed it promptly. He cleaned up and the price was fair.

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Christian Distler-Caravetta came out and did a second inspection and was honest and upfront with what he saw. Very professional with all…

Christian Distler-Caravetta came out and did a second inspection and was honest and upfront with what he saw. Very professional with all aspects and created a relationship to where if ever need anything done with foundations, he is the guy I will call.

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Levi came to give me an estimate on fixing the subsidence of my porch. We was friendly, knowledgeable, well spoken, and on time . I felt…

Levi came to give me an estimate on fixing the subsidence of my porch. We was friendly, knowledgeable, well spoken, and on time . I felt confident that the work I needed will be done to a high standard.

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Called yesterday ..non emergent! Technician Mr Burns came on time this am! I showed him the plumbing issues I had, he assessed took…

Called yesterday ..non emergent! Technician Mr Burns came on time this am! I showed him the plumbing issues I had, he assessed took pictures told me what the job would entail and what materials were needed and the cost…I was very satisfied with A1's service and the job was all done promptly and correctly and most of all at a good price! I would call A1 for all your plumbing needs. A Great Experience!

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Thanks for sending Daquan & Kavon (great duo!) to address my foundation and concrete issues with our home. The called with an accurate…

Thanks for sending Daquan & Kavon (great duo!) to address my foundation and concrete issues with our home. The called with an accurate arrival time and explained the problem & approach. Was fast and efficient. Your professionalism & customer service are greatly appreciated.

Is Crawl Space Encapsulation the Right Solution for Me? 

Homes in southern coastal areas like Hampton Roads and the Outer Banks typically have crawl spaces. Crawl spaces buffer the house from the ground, and they often contain essentials like plumbing pipes, ductwork, and HVAC equipment.  

Since the mid-20th century, crawl spaces have been built with open vents and dirt floors which cause a lot of their problems. Moisture and pests can enter through them and damage your crawl space. 

You don’t have to live with these crawl space problems. Our crawl space expert at JES help you create a safer, healthier living environment with permanent crawl space encapsulation solutions. 

Call us today or fill out this form to get started!

FAQs

Humidity, unfortunately, is not a harmless visitor in your home. If you allow humidity to gather in your crawl space, then you may find yourself contending with unwanted damage in the days, weeks, and months to come. Humidity, after all, does more than make your space uncomfortable to live in. Unwanted moisture in the air can cause significant damage throughout the whole of your home, such as: 

  • Unpleasant smells 
  • Mold growths 
  • Warped door frames 
  • Damaged windowsills 
  • Sagging floors 
  • Rotting floor joists 
  • Wood rot 
  • Foundation sinkage 

If you find yourself contending with crawl space humidity, you can reach out to a professional contractor in your area to schedule a home inspection. During a home inspection, you can find the source of a leak and determine how best you can resolve the damage done to your home. You can also discuss what waterproofing measures might help you protect your home from unwanted moisture after repairs have been completed.

The stack effect is a condition in a home describing the behavior of air based on its density. Air that is warmer has a less significant density than cooler air. As a result, warmer air tends to rise to the top of a home. However, if the air in your crawl space takes on an excessive amount of moisture, the density of the air can increase significantly. In most cases, you’d assume that’d mean air would remain in the bottom of your home. However, if the moisture from your crawl space starts to leak into the rest of your home, that dense air can spread, exposing all belongings and other structural supports to conditions that might result in damage. 

There is no getting away from the stack effect, unfortunately. No matter what steps you take, the warmer air in your home will always rise to the top of your home. However, if you work to eliminate the excess moisture in your crawl space, you can prevent wood rot and other moisture-induced damage from appearing in the rest of your home. It is in your best interest to see what you can do to seal off the entirety of your crawl space. Even if you haven’t taken any preventative measures yet, you can keep the vents in your crawl space closed and blocked off while also making sure your crawl space door fits well in its frame.

The process of encapsulating your crawl space allows you to protect your home against unwanted moisture. A professional will cover the walls and floor with a dense layer of plastic-like material. In doing so, they create a tight seal within your space, preventing both water and most gas particles from making their way inside. It’s important to maintain the health of your crawl space and the function of your protective measures. So you will need to keep an eye on your encapsulation materials over the years to ensure that none of them are wearing thin. 

The cost of encapsulating your crawl space will vary based on the types of materials you want to purchase, as well as the size of the space you want to protect. If you let your crawl space suffer from damage for an extended period of time, however, the cost of eventual repairs will vastly outstrip those protective measures you might invest in ahead of time. Additionally, encapsulating your crawl space can help lower your electric bills, as they can improve your ability to control the temperature throughout your crawl space and the rest of your home.

Crawl space encapsulations help you create a sealed area within your crawl space. In doing so, they make it easier for you to prevent unwanted humidity and, in turn, to deal with it accordingly. If something breaks the seal you have on your crawl space, you might find yourself contending with a spread of moisture throughout the rest of your home. 

An ill-fitting crawl space door will let moisture into the rest of your home. You’ll want to work with the professionals in your area to first identify the source of moisture in your crawl space and fix it. With a leak fixed, you can then go about removing the rest of the unwanted moisture from the rest of your crawl space. Only once your space has dried out should you go about replacing your crawl space door and its frame. Once you’ve reached that point, you can make sure that the door fits well into its frame and benefits from another waterproofing measure you may have installed in your space.

Crawl space encapsulation will almost certainly help you lower your energy costs. In fact, some people suggest you could save up to 15-25% in energy costs when you encapsulate your crawl space. It can be more difficult to cool your home when the air is humid, and the same holds true whether you’re cooling your crawl space or the rest of your home.

When encapsulating your crawl space, you’re removing all ability for moisture to enter the crawl space. When moisture can’t enter your crawl space, it also can’t rise up through the rest of the home. That means you have to use much less energy to condition the air in your crawl space and in the home in general.

On an aesthetic level, an unlined crawl space tends to smell unpleasant. These types of smells tend to arise as a result of precipitation and the unprotected dirt or materials you’ve left unlined in the space. The smells coming from your crawl space can rise up through your home along with unpleasant, moist air and permeate otherwise clean spaces. It can be extremely difficult to get rid of these smells, even if you make a point of clearing out the rest of your home. Leaving a crawl space unlined can also result in: 

  • Warped door frames 
  • Damaged windowsills 
  • The stack effect 
  • Sagging floors throughout your home 

In short, by lining your crawl space, you protect that space from extensive damage. You can reach out to professional contractors in your area to determine what kind of crawl space lining might help you protect your space against the aforementioned problems. Note that not all linings are waterproof, but that you can invest in waterproof lining when you’re first installing the protective measure. Some other types of linings are merely aesthetic, but they can still provide tentative support in your fight against unwanted moisture.

That “musty smell” that many people think of as being indicative of a regularly functioning crawl space is actually not an intended crawl space feature. The musty crawl space smell actually occurs because of mold growth, which feeds off moisture to grow.

This is exactly why a “musty smell” should be a sign that you need to fix something. If your crawl space smells musty and stale, there’s something wrong. You can fix it and avoid potentially permanent damage from mold and moisture, but you have to take the first step. Don’t wait to check out your crawl space; there’s a decent chance that there’s something happening you can fix.

That “musty smell” that many people think of as being indicative of a regularly functioning crawl space is actually not an intended crawl space feature. The musty crawl space smell actually occurs because of mold growth, which feeds off moisture to grow.

This is exactly why a “musty smell” should be a sign that you need to fix something. If your crawl space smells musty and stale, there’s something wrong. You can fix it and avoid potentially permanent damage from mold and moisture, but you have to take the first step. Don’t wait to check out your crawl space; there’s a decent chance that there’s something happening you can fix.

Some people seem to think that fixing bouncy or sagging floors can be a DIY project that you may be able to fix with the addition of a brick or a stack of wood. However, you should always consult an expert if you’re experiencing issues with bouncy floors.

It’s true that this method of providing additional support, also called “sistering,” can be beneficial in some cases. However, this additional support will only last for a short period of time. If the floor joist is bouncy because it’s over-spanned or full of wood rot, you’re just putting a bandage over the problem rather than addressing it head-on.

Incorrectly supporting the floors can sometimes be worse than not supporting them at all. Cinder blocks can tip or crumble, which can damage your home when they fall. Jacking up floor joists very quickly can cause the floor to buckle and drywall cracks to form. Using any pieces of wood may just add fuel to the fire and allow mold and wood rot to spread.

Clearly, the only answer is to contact a crawl space expert to fix your bouncy floors. You want the job done right the first time, and the only way to do that is to contact a JES expert for help.

For a long time, people thought open crawl space vents were actually a benefit in a home. The idea was that crawl spaces needed ventilation because the ventilation would help “dry out” the crawl space. In fact, many building codes required ventilated crawl spaces, with minimal exceptions for unventilated crawl spaces.

Although this was a popular idea for many years, it doesn’t hold up to scrutiny nowadays. Because of the different temperatures of outside air and air in your home, open crawl space vents may actually increase the amount of humidity in your crawl space, rather than reducing it. Clearly, it’s not a good idea to leave your crawl space vents open.

The good thing is that there are many ways to return your crawl space to an encapsulated state. JES seals crawl space vents to avoid the entrance of water, moisture-laden air, or anything else into your crawl space.

Dehumidifiers can serve as effective waterproofing measures in your crawl space. Whether or not a dehumidifier can help you solve your crawl space problem, however, will depend on the extent of damage you’re seeing in your space. Dehumidifiers help pull moisture from the air and can run fairly consistently, as long as you cycle them regularly. If a contractor believes that the extent of your damage can be confined to high levels of humidity and not, for example, mold growths or standing water, dehumidifiers can help protect your space against immediate damage while also preventing a build-up of air pressure that might, later down the line, circulate moist air through the rest of your home.  

However, note that dehumidifiers are not fix-all devices. If you’re contending with more significant moisture levels in your crawl space, it may be in your best interest to pair a dehumidifier with another set of waterproofing measures, like a vapor barrier, interior drainage system, and a sump pump. This way, the multiple waterproofing measures can support one another as they draw unwanted moisture out of your space.

Wet insulation will not do its job in your home, but it can also become a host for mold spores. You can again work with a professional to inspect your crawl space and reveal any insulation that might have suffered damage as a result of a leak. Should you find wet crawl space insulation, you may have to hire a professional to effectively remove it and replace it.  

You can remove that moisture, dispose of it in accordance with your county’s regulations, and install new insulation material. We recommend rigid, waterproof panels called ExTremeBloc™ that also are treated to resist termites. Above all else, be sure to check over the space where your insulation used to be for signs of mold growth. You’ll want to do what you can to remove all such growth from your home before they have the opportunity to spread further.

Why Crawl Space Repair and Encapsulation Are Needed 

Just as crawl space problems have a variety of impacts, crawl space repair and encapsulation offer your home and family countless benefits. Here are just a few of them: 

dehumidifier to manage efflorescence

Improves Energy Efficiency

Vented crawl spaces allow the unconditioned outside air inside your crawl space and home. This can make your floors feel cold during the winter and warm during the summer. Thus, you would be constantly fighting with your HVAC system to find a comfortable temperature. This not only strains your HVAC, but its constant operation can drive up utility bills. But with crawl space vent sealing, a vapor barrier, and a dehumidifier, your home will be more comfortable and energy-efficient. 

bugs in crawl space

Helps Deter Pests

Pests access crawl spaces through the soil, foundation cracks, and gaps caused by open or damaged vents and doors. They are attracted by the isolation, darkness, and moisture your unconditioned crawl space offers. But by deploying moisture control methods, you can decrease their interest in the space and make it more difficult for them to get inside. This can be done with vent sealing, a thick vapor barrier, rigid insulation panels (that are integrated with a termiticide), and an energy-efficient dehumidifier

stack effect

Offers Positive Impact from the Stack Effect

Nearly half of the air you breathe in your house comes from your crawl space. That is largely due to the stack effect, the natural movement of air throughout your home from bottom to top. This means that anything in your crawl space like mold spores, pest waste, and unpleasant odors also circulates elsewhere in your house. This is unhealthy and unsafe, especially for people with existing breathing conditions. But once your crawl space is properly encapsulated and dehumidified, the cleaner, conditioned air within this space is circulated. 

Common Crawl Space Encapsulation & Repair Tips & Mistakes 

We’ve seen pretty much everything during our 30 years as crawl space encapsulation experts. To equip you with knowledge and advice, here are some helpful dos and don’ts:

Tips to Consider: 

  • Clean Your Gutters and Downspouts: While crawl space encapsulation systems are internal, you also need to protect your crawl space from the outside. Your gutters and downspouts are your first line of defense against excess water around your home. Regularly inspect and maintain yours at least twice a year in the spring and fall. Check for any holes, remove clogs and debris, and ensure the downspouts and extensions drain away from the house.
  • Correctly Grade Your Yard: Having a positively graded yard also prevents excess water from collecting near your crawl space. A yard with a positive grade slopes down and away from the house, draining water away from it.
  • Add Backup Waterproofing Protection: Our region experiences a considerable amount of precipitation, and flooding is prevalent in coastal areas. Along with encapsulation solutions, having waterproofing measures, such as an interior drainage system and a sump pump, is critical. In the event of a power outage, be sure your crawl space sump pump has a battery backup pump to ensure continuous operation when you need it the most.

Mistakes to Avoid: 

  • Enter Your Crawl Space Without Proper Protection: Your crawl space may be full of mold, and it might even be caving in. We recommend you don’t go in there without proper protection. In fact, you should leave it to professionals if you haven’t been down there in a while and don’t know what to expect.
  • Waste Money on Partial Solutions: When your crawl space needs repairs, it can be tempting to address them with quick, partial solutions. Pumping sand into the crawl space to try to sop up water, placing fans or conventional dehumidifiers inside to try to dry the air, and laying a thin, 6-mil vapor barrier liner on the crawl space floor—these are all partial solutions. And they can end up making crawl space problems worse.
  • DIY Your Crawl Space: While it may be tempting to repair your own crawl space with solutions from big-box stores, most of those solutions simply won’t cut it and you may make crawl space issues worse. You may also be putting yourself at risk of exposure to mold and other hazards. Leave it to the pros!

Providing Expert Crawl Space Repair & Encapsulation in Virginia, Maryland, West Virginia & North Carolina

Pennsylvania trusts JES for reliable basement waterproofing, crawl space, foundation, and concrete repair services. Contact us for a free inspection!  

Top Cities We Serve


JES Foundation Repair service area map of the Mid-Atlantic region.

Our Locations

Baltimore

8361 Town Center Ct
Nottingham, MD 21236

Fredericksburg

311 Central Rd.
Suite 2-02
Fredericksburg, VA 22401

Hampton Roads & NE NC

2569 Quality Ct
Virginia Beach, VA 23454

Northern VA & DC

7940 Gainsford Ct.
Bristow, VA 20136

Richmond

309 Quarles Rd
Ashland, VA 23005

Southwest Virginia / Roanoke

2033 Cook Dr.
Salem, VA 24153

Western Virginia

456 Old Courthouse Rd
Appomattox, VA 24522

Winchester

45 W Boscawen St,
Winchester, VA 22601