Provider profile
Capstone Waterproofing Solutions
Provider snapshot
What this listing says
Prince George's County and DC homeowners dealing with basement water intrusion who want a waterproofing contractor that also handles mold remediation and foundation repair under one roof.
Best for
- Homeowners in Prince George's County or Washington DC with basement water problems that have already led to mold growth, since Capstone handles both the water source and the mold under one contract.
- Buyers who want the owner personally involved in the assessment and reachable by phone throughout the project — Joe's direct involvement is the most consistent theme in reviews.
- People who have received high-pressure quotes from larger waterproofing companies — multiple reviewers describe Capstone's pricing as significantly lower than competitors while delivering equal or better results.
- Homeowners with complex situations involving builder disputes, insurance claims, or DC permitting — several reviewers credit Joe with patience navigating these processes.
About this company
Capstone Waterproofing Solutions is a Glenarden, Maryland-based company that pairs basement waterproofing with mold remediation — the same crew that stops the water also handles the mold it caused. Owner Joe McPherson founded the company in 2014 after a personal bout with mold-related illness left him bedridden for three weeks while working as a general contractor in foreclosed homes. He holds mold inspector and mold remediator credentials and is a Basement Health Association member. The company holds MHIC license #131805.
What stands out is the owner-involvement model. Joe personally handles initial assessments and stays reachable by phone throughout the project. Multiple reviewers describe him finishing their sentences about hydrostatic pressure or walking them through moisture detection findings. The company uses an online portal where clients can track estimates, invoices, daily photos, and progress updates — an unusual level of documentation for a company this size. The mold remediation page lists PPE requirements including full-face respirators, Tyvek suits, and positive pressure ventilation, and lists encapsulation and moisture detection among the steps.
Capstone claims 500+ houses waterproofed, 200+ foundation repairs, and 150+ mold remediation jobs since 2014. The team includes project managers Mr. Jones (also called Claude or CJ) and others who run on-site crews. The company offers a 10-year warranty on waterproofing and a 1-year warranty on finishing and remodeling work. They are open seven days a week, 7 AM to 9 PM.
A 4.9 rating across 94 Google reviews with zero negatives in the last 18 months is unusually clean. That does not mean every job went perfectly — Drew Ellison Hart's 5-star review describes the crew forgetting to set up a negative-pressure system during mold work, causing fungicide smell on upper floors. Joe responded immediately and resolved it, but the incident shows that even satisfied customers encountered hiccups.
Services
Service area
Headquartered in Glenarden, Maryland (Prince George's County). Serves Washington DC, Silver Spring, Hyattsville, Lanham, Bowie, Laurel, Largo, New Carrollton, Greenbelt, Crofton, Odenton, and Fort Meade. Coverage is concentrated in Prince George's County and extends into Anne Arundel County and the District of Columbia.
Review consensus
Joe McPherson's direct involvement is the dominant theme — reviewers describe him personally answering the phone, explaining hydrostatic pressure, and showing up for final walkthroughs. Mr. Jones (also referred to as Claude or CJ) is frequently praised as the on-site project lead who keeps crews organized and work areas clean. Reviewers consistently note competitive pricing relative to other quotes, on-time arrivals, daily cleanup, and the educational approach where the crew explains what they are doing and why. The online portal for tracking estimates, invoices, and daily photos is mentioned by several reviewers as a differentiator. DJ, Tyrone, Lonnie, Eddy, Rudy, Carlos, and Jose are all named positively by individual reviewers for their work ethic and courtesy.
0 found across 94 total reviews at 4.9★. No 1-star or negative reviews appeared in the last 18 months across 94 total reviews at 4.9 stars. The closest thing to a reported issue comes from Drew Ellison Hart's 5-star review, which describes the crew forgetting to install a negative-pressure system during mold remediation, causing fungicide odor on upper floors. Joe addressed it immediately. Without recent negatives, there is no complaint pattern to analyze.
The owner responds to nearly every review with personalized replies that reference specific details of the project — not template responses. This level of engagement is consistent with the hands-on, owner-operated model reviewers describe. The absence of any negative reviews over 18 months across 94 total reviews is notable. It could reflect genuinely consistent service on a manageable volume of projects, or it could mean dissatisfied customers are not posting. The review base skews toward waterproofing projects rather than mold work, so there is less independent signal on mold remediation quality.
Joe McPherson (owner — overwhelmingly positive, named in the majority of reviews for communication, honesty, and knowledge). Mr. Jones / Claude Jones / CJ (project manager/engineer — positive, praised for crew leadership, attention to detail, and on-site presence). DJ (technician — positive, praised for troubleshooting and explanations). Lonnie (remediation crew — positive, mentioned for quick mold work). Eddy (remediation crew — positive, mentioned alongside Lonnie). Rudy (crew member — positive, noted for careful and quick work). Carlos (crew member — positive, noted for careful and quick work). Jose (crew member — positive, praised for knowledge and friendliness). Tyrone (technician — positive, praised for detail orientation and knowledge). Clyde (consultation — positive, mentioned in a seek-and-discovery assessment). Mr. Singley (repair work — positive, praised for outstanding job on ceiling and painting).
With 94 reviews and no recent negatives, the signal is clear: people who hire Capstone tend to be satisfied, and Joe's personal involvement is the reason most often cited. Ask for Joe directly during the assessment. If your project involves mold, ask whether they will accept an independent mold test or if they require their own — given the testing-and-remediation overlap, an independent test protects you both.
Keep in mind
- Capstone does both mold testing and mold remediation. This is a conflict of interest — the company that finds the mold also profits from removing it. Ask whether they will accept a third-party test result or recommend an independent inspector.
- The company is primarily a waterproofing and foundation repair contractor. Mold remediation is one of four service lines, not their sole focus. If your mold problem is unrelated to water intrusion, confirm they have experience with your specific situation.
- Service area pages list cities from Hyattsville to Fort Meade and Crofton, covering a wide swath of central Maryland. Confirm availability and response time for locations far from their Glenarden headquarters.
- Maryland law requires a 5-day cooling-off period after signing a home improvement contract before work can begin. Factor this into your timeline.