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Central Maryland’s Water Management Specialists


Protecting Your Home Starts Below the Surface
Water has a way of finding its path into a home, and it rarely takes just one route. In Central Maryland, moisture can push through foundation walls under hydrostatic pressure, seep in along floor joints, rise up through crawlspaces as vapor, or pool against the house when the land around it directs runoff the wrong way. When homeowners patch one problem without looking at the full picture, the same issues tend to resurface.
At Allmaster Home Services, we take a whole-property view of water management. That means tracing how moisture actually moves around your home, finding every place it’s getting in, and building a plan that addresses the root cause rather than just the obvious signs. Our goal is to give Maryland homeowners the confidence that their most valuable investment is finally and permanently on solid ground.
Connected Solutions for a Healthier Home
Effective water management isn't a single repair, but a strategy. Your yard’s slope, your downspouts, and your foundation all work as one system, and if one fails, they all do. To protect your home from every angle, we offer these services:

A wet basement is one of the most common concerns we hear about, and it’s also one of the most misunderstood. Some moisture troubles start outside the home, while others develop along interior joints or through the wall itself. That’s why effective basement waterproofing often involves a combination of approaches.
Exterior methods focus on guarding the foundation wall before water reaches the basement. Interior systems, on the other hand, are designed to collect and redirect any seepage that has already entered.

Soggy spots in the lawn might seem like a cosmetic annoyance, but persistent pooling or runoff that flows toward the house is a sign that something more is going on. Over time, poor yard drainage places stress on the foundation, and that stress tends to show up in the basement or crawlspace sooner or later.
Our yard drainage work starts with understanding how water travels across your property during and after rain. We’ll then build a custom strategy using the right mix of French drains, sump pumps, grading, and downspout extensions to fit your unique layout.

The crawlspace is easy to ignore because most homeowners never see it. But what happens underneath the home can absolutely affect what happens inside it. Ground moisture naturally migrates upward. Over time, that can contribute to elevated humidity, musty odors, deteriorating wood, and reduced indoor air quality throughout the living area above.
Crawlspace encapsulation creates a sealed barrier system that cuts off that vapor pathway and helps keep the area beneath your home dry and stable. It’s one of the most impactful improvements we make for homeowners dealing with humidity or odor issues.

Once a crawlspace has been sealed, insulation becomes the natural next step. An uninsulated crawlspace allows significant heat to transfer through the floors above, making rooms feel drafty in winter and harder to keep comfortable year-round.
We commonly complete crawlspace insulation alongside encapsulation work to address both moisture and energy-efficiency concerns. The result is a crawlspace that’s doing its job rather than quietly working against you.

A basement remodel is only as reliable as the waterproofing behind it. Skipping moisture control is a gamble that often ends in ruined drywall and wasted money.
We take the guesswork out of remodeling by ensuring your foundation is bone-dry before the first stud is ever placed. From heavy-duty waterproofing to final aesthetic touches, we turn damp basements into premium living environments.

If you’re thinking about finishing your basement, egress windows are an important part of that conversation. Building codes require a compliant emergency exit in finished below-grade rooms, and properly installed egress windows fulfill that requirement while also bringing in natural light.
Installation matters here, especially when drainage and waterproofing are part of the project. A well-designed egress window system includes drainage provisions around the window well to prevent a new opening from becoming a water entry point.

Why Choose Allmaster Home Services?
There are plenty of contractors who can install a drain or apply a waterproofing product. What sets Allmaster Home Services apart is the depth of understanding we bring to each project. Moisture problems are not isolated events. They connect the yard, the foundation, the basement, and the crawlspace into one system. And the way we solve the problem is by understanding the whole story.
As a family- and veteran-owned business, we built our reputation on honest communication and recommendations that reflect what a home actually needs, not what generates the biggest invoice. Homeowners also appreciate working with a company that can handle drainage, waterproofing, crawlspace improvements, and basement-related projects under one roof. Fewer contractors to coordinate means a smoother process and more consistent results.
Our credentials include a BBB A+ accreditation, Best Picks 5-Star Certification, Top 500 Remodeler in the Nation recognition, MHIC License #28982 and #121436, and Master Craftsman certification through Belgard. But our reputation is best told by the families we’ve helped. See our success stories on our reviews page.
Trusted Across Anne Arundel County & Beyond
Allmaster Home Services works throughout Anne Arundel, Howard, Montgomery, and Frederick Counties. We have completed projects in Pasadena, Annapolis, Catonsville, Columbia, Ellicott City, Clarksville, Bethesda, and communities across Central Maryland.
We take pride in every home we protect across the region. You can explore recent projects in our online gallery or confirm coverage for your specific neighborhood on our service areas page.
Frequently Asked Questions
Exterior waterproofing is designed to keep water from reaching the foundation wall in the first place by addressing conditions on the outside of the home. Interior systems collect and redirect seepage that has already entered the basement or crawlspace.
In most cases, yes. A French drain collects and channels water, while the sump pump removes water from the basement and sends it away from the structure. The two systems are designed to complement each other.
A combination of factors makes moisture management particularly challenging here. Many homes were built before modern drainage and vapor-control practices were standard. Add to that the region's clay-heavy soils and seasonal rainfall, and you have conditions that make proactive water management important.
If you’re noticing damp walls, standing water, musty odors, foundation cracks, water pooling against the house, or higher-than-normal humidity in the lower levels, it’s worth having a professional take a look before the conditions worsen.
Get Clarity on What Your Home Needs
You shouldn't have to worry every time the forecast calls for rain. From foundation repair to yard drainage, we provide the clarity and expertise you need to move forward.
Reach out to Allmaster Home Services today to schedule your free estimate. We’ll help you stop the cycle of moisture damage for good.
Testimonials
Very comfortable process from beginning to end. Helpful, insightful, professional, and competitive. Crew was hard at work on the landscaping everytime I checked in. End project looks great and I am confident in the structure and craftsmanship.
Professional and excellent customer service. Would hire them again without reservation.
Allmaster came to our home to demolish and rebuild front porch. Pictures are posted on their facebook page. It went absolutely perfect. Our porch looks wonderful. I will definitely be doing service with them again in the future.
We were nervous about the cost and complexity of the project, but everything went extremely well. Communication regarding the project was frequent, the crew was friendly and hard working, and the result is stunning!
Allmaster’s came out immediately for an estimate, did a very professional job and completed the work on a very tight schedule to meet a closing date. Both Nick and John were great to work with! I would highly recommend their company.
The customer service was very professional. Allmasters has a very hardworking crew. The job was done in a timely manner. I will definitely use them again.
Very professional. The customer service was excellent and price was reasonable. John and nick were great to work with and I would highly recommend.
I’m quite happy with the improvement in energy efficiency that was achieved by installing the radiant barrier in my attic last year. Even after installing a new energy efficient heating/AC system the previous year, the AC bill was much lower than it was the year before(barrier) and my heating bill this last, long cold snowy winter was lower than it’s ever been in the thirty years I’ve lived here! Great job guys!
Team did a great job and we would give our highest recommendation. Took time during the estimate and all through the actual project work to explain what was needed and being done. Angel and his crew are friendly, courteous, and professional.
I have had multiple projects done on my house in preparation for selling. Allmaster builders did an excellent job and were very affordable. I definitely recommend their services to anyone looking for a good general contractor.
Allmaster Did a very professional and timely job, everything was completed on schedule and on time. I was very pleased with the work and my interaction with John. I would definitely hire the again and highly recommend them to my friends and neighbors.



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