Skip to main content

Cookies on BBB.org

We use cookies to give users the best content and online experience. By clicking “Accept All Cookies”, you agree to allow us to use all cookies. Visit our Privacy Policy to learn more.

Cookie Preferences

Many websites use cookies or similar tools to store information on your browser or device. We use cookies on BBB websites to remember your preferences, improve website performance and enhance user experience, and to recommend content we believe will be most relevant to you. Most cookies collect anonymous information such as how users arrive at and use the website. Some cookies are necessary to allow the website to function properly, but you may choose to not allow other types of cookies below.

Necessary Cookies

What are necessary cookies?
These cookies are necessary for the site to function and cannot be switched off in our systems. They are usually only set in response to actions made by you that amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not work. These cookies do not store any personally identifiable information.

Necessary cookies must always be enabled.

Functional Cookies

What are functional cookies?
These cookies enable the site to provide enhanced functionality and personalization. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.

Performance Cookies

What are performance cookies?
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.

Marketing Cookies

What are marketing cookies?
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant content on other sites. They do not store personal information directly, but are based on uniquely identifying your browser or device. If you do not allow these cookies, you will experience less targeted advertising.

Find a Location

Master Seal, Inc. has 2 locations, listed below.

*This company may be headquartered in or have additional locations in another country. Please click on the country abbreviation in the search box below to change to a different country location.

    Country
    Please enter a valid location.
    • Master Seal, Inc.

      21 Fontana Ln Ste 104 Baltimore, MD 21237-4617

    • Master Seal, Inc.

      8205 Harford Rd Parkville, MD 21234-5704

    Business ProfileforMaster Seal, Inc.

    Window and Door Installation
    Multi Location Business

    At-a-glance

    Customer Reviews

    1.89/5stars

    Average of 9 Customer Reviews

    Customer Complaints

    2 complaints closed in last 3 years

    0 complaints closed in last 12 months

    Customer Reviews are not used in the calculation of BBB Rating

    Overview of BBB Rating

    Products & Services

    This company offers installation & service for entry doors, windows, siding, awnings, security bars & doors, patio doors.

    Business Details

    This is a multi-location business.

    Find a Location

    Master Seal, Inc. has 2 locations, listed below.

    *This company may be headquartered in or have additional locations in another country. Please click on the country abbreviation in the search box below to change to a different country location.

      Country
      Please enter a valid location.
      • Master Seal, Inc.

        21 Fontana Ln Ste 104 Baltimore, MD 21237-4617

      • Master Seal, Inc.

        8205 Harford Rd Parkville, MD 21234-5704

      Location of This Business
      21 Fontana Ln Ste 104, Baltimore, MD 21237-4617
      BBB File Opened:
      7/18/1995
      Years in Business:
      30
      Business Started:
      1/1/1994
      Business Incorporated:
      3/31/1995
      Licensing Information:
      This business is in an industry that may require professional licensing, bonding or registration. BBB encourages you to check with the appropriate agency to be certain any requirements are currently being met.
      Type of Entity:
      Corporation
      Alternate Business Name
      • Master Seal Doors & Window
      Business Management
      • William Lambert Sr.
      Contact Information

      Principal

      • Mr. John Dennis, President

      Customer Contact

      • Mr. John Dennis, President
      Additional Contact Information

      Fax Numbers

      • (410) 238-5366
        Primary Fax

      Customer Complaints

      2 Customer Complaints

      Need to file a complaint? BBB is here to help. We'll guide you through the process. How BBB Processes Complaints and Reviews

      File a Complaint

      Most Recent Customer Complaint

      05/12/2023

      Complaint Type:
      Service or Repair Issues
      Status:
      Resolved
      On 10.18.2019, I purchased [2] Front Security Doors from ****** ****, which were installed on 1.7.2020. They are now rusting at the bottom seams and around the mail box. On 5.10.2023, this fact was reported to and observed by Marty. He took pictures of the doors and later Alicia called and said they could fix the rust with paint and replace the rusted screws. She indicated that she thinks that they no longer do business with the company that manufactured the doors. It alleges that the doors are of an inferior quality compared to others purchased and requested that they be replaced. Alicia alluded to a fact that the rusting could be the result of me not keeping the doors clean. These Doors are affixed to the main entry point of my home and are cleaned quite often. And moreover, the older model Security Storm Doors purchased from their company [****** ****] and installed in the back of my home, are not rusting. I contended that these security doors are less then 3-years-old and based upon the sales warranty information provided, [should not be rusting]. Therefore, I requested that both doors be replaced. On 5.11.2023, Alicia said the doors are only warranted against rust for “1 year”. And that she will schedule Marty to come out and sand out the rust and repaint the door and replaced the mail box screws. I told her I was not pleased with their decision. The warranty information provided when purchasing these doors on October 18, 2019, for $4040, was years against rusting, not [1-year]. Stephen and Pat, whom have been my ****** **** representatives for years, sold these door based upon their durability, quality, lasting beauty and warranties and even stated that insurance companies would pay the full value of these doors if the need arises. It is very disappointing to learn that a company that I have had a business relationship with for years, sold me an alleged inferior product. Thanks in advance for any assistance that you may provided.
      Read More

      Customer Reviews

      9 Customer Reviews

      What do you think? Share your review.

      How BBB Processes Complaints and Reviews

      Start a Review

      Most Recent Customer Review

      Lawrence H

      1 star

      12/08/2023

      Master Seal Windows and Doors: Consumers Beware! I recently had Master Seal back in my home to inspect all 14 windows they sold me 4 years ago. Problems and defects include: Broken Window Locks; Cracked Casings; Broken Window Seals (fogging); and all 7 of my south facing windows are showing signs of external distress (buckling). Beyond the disappointment of having invested $12K(+) in failing windows, Master Seal REFUSES to provide me a repair quote without a down payment on labor costs. Granted the windows are covered under warranty, and I can almost accept having to pay a reasonable labor fee to complete the repairs, but for Master Seal to refuse me a copy of the inspection report, and demand a deposit in order to provide me an “estimate” is absurd. After multiple discussions I can only conclude that they have no interest in resolving this. Poor Construction, Shoddy Craftsmanship, and a completely indifferent Customer Service Department. Not good at all.

      Master Seal, Inc. Response

      01/02/2024

      As the owner, I appreciate the opportunity to clarify our service process regarding this specific customer's request for a window inspection. Our commitment to transparency and customer satisfaction is paramount and we take it to heart. For inspections requested beyond the two-year post-installation period, we have a nominal service fee of $135. This policy, which was communicated clearly to the customer prior to the visit, helps cover the costs of our team's on-site evaluations. However, we always strive to add value for our customers: if any service work is subsequently undertaken, this fee is deducted from the labor charges, essentially making the inspection complimentary. Once the inspection is completed, the findings are handed over to our estimating department. They meticulously assess the need for parts and labor. It's worth noting that most parts are usually covered under the manufacturer's warranty at no extra charge, providing significant savings to our customers. The service fee predominantly addresses labor costs, only for work needed beyond our comprehensive two-year labor warranty.

      Local BBB

      BBB of Greater Maryland

      BBB Reports On

      BBB reports on known marketplace practices.

      BBB Business Profiles may not be reproduced for sales or promotional purposes.

      BBB Business Profiles are provided solely to assist you in exercising your own best judgment. BBB asks third parties who publish complaints, reviews and/or responses on this website to affirm that the information provided is accurate. However, BBB does not verify the accuracy of information provided by third parties, and does not guarantee the accuracy of any information in Business Profiles.

      When considering complaint information, please take into account the company's size and volume of transactions, and understand that the nature of complaints and a firm's responses to them are often more important than the number of complaints.

      BBB Business Profiles generally cover a three-year reporting period. BBB Business Profiles are subject to change at any time. If you choose to do business with this business, please let the business know that you contacted BBB for a BBB Business Profile.

      As a matter of policy, BBB does not endorse any product, service or business.