Deck Waterproofing

At Mississauga Decks & Trim, we specialize in top-quality deck waterproofing services to protect and enhance your outdoor living space. Our expert team uses cutting-edge solutions like EPDM Membrane, DrySpace, and Zip-Up UnderDeck to ensure your deck remains durable, visually appealing, and functional year-round.

Shield & Elevate Your Deck with EPDM Membrane

EDPM deck drainage systems create dry, functional space below your deck that has virtually unlimited uses while mitigating damage from precipitation and moisture. Whether you plan to use your under-deck area for storage or to expand your living space with furniture, a finished ceiling, and more – EDPM waterproofing ensures that you won’t have to strip everything bare in 20-30 years and start all over again. Warranted to last over 30 years, it's proven to be the gold standard in deck waterproofing.


How Does an EPDM Membrane Work?

EDPM tapered strips are custom-cut to length, which are typically cut to fit over 12″ or 16″ on-center framing. The unique cut of the panels allows the drainage trough to form automatically during installation. It is designed to channel water away from the house and into a collection gutter creating a complete water diversion system. Gutters are attached to the deck beam, which leads to a downspout connected to one of the posts, which directs water out and away from your house.

our deck waterproofing Services

EPDM Membrane

We offer custom-cut, durable, and flexible waterproofing solutions that seamlessly conform to the deck's surface. Our EPDM Membrane ensures a tight seal for optimal protection, effectively preventing water infiltration and extending the deck's lifespan in all weather conditions.


Durability and Flexibility

Our EPDM membranes are crafted from high-quality materials that offer exceptional durability and flexibility. Designed to withstand extreme weather conditions, including heavy rain, snow, and UV exposure, these membranes resist cracking and degradation. 

Custom Cutting and Installation

We specialize in custom-cut EPDM membranes tailored to fit your specific deck dimensions and contours. Our expert team ensures precise installation, minimizing seams and maximizing coverage. This personalized approach guarantees a snug fit, enhancing the membrane’s performance and longevity.

Seamless Waterproofing

With our EPDM membrane systems, you can achieve a seamless waterproofing solution that effectively prevents water infiltration. The continuous surface eliminates potential leak points, safeguarding your deck and the structure beneath it. 

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The Advantages of Waterproofing Your Deck

Expand Your Usable Space & Aesthetics

Waterproofing your deck transforms the area beneath into a functional, cozy lounge, dining spot, or outdoor kitchen. This dry area opens up endless design possibilities, creating a luxurious and appealing outdoor retreat.

Guard Against the Elements

Protect your upper deck from rain, snow, and UV rays. Waterproofing safeguards your deck’s structure, preventing rot, decay, and mold, ensuring its longevity for years to come.

Enjoy Your Deck Year-Round

With EPDM waterproofing, your outdoor space becomes usable in any season. Add heaters or a fireplace for a cozy winter retreat, allowing you to host outdoor activities and gatherings throughout the year.

Boost Your Home’s Value

A waterproofed, well-designed deck enhances your home’s value and appeal, making it more attractive to prospective buyers.

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Immersive Visualization



Visualization is a powerful tool that brings design ideas to life. With immersive 3D renderings, clients can virtually walk through the proposed deck design before construction begins, ensuring complete satisfaction with the final product.

Accurate Project Preview

An accurate project preview allows for meticulous planning and preparation. It provides a comprehensive view of the end result, helping to avoid any surprises or misunderstandings. It also enables precise material estimation, reducing wastage and unexpected costs.

Easy Modifications



Modifying a physical structure after it's built can be costly and time-consuming. However, with 3D designs, changes can be made easily within the virtual model itself. This offers flexibility in modifying designs until they meet client expectations perfectly.

Visual Appeal

Aesthetic enhancements are achieved through tailored waterproofing solutions, optimizing both the deck and the space below it. The sleek, finished look provided by specialized materials enhances visual charm and property value.

Low Maintenance

Minimal upkeep requirements, especially with the EPDM Membrane, which necessitates only occasional cleaning to remove debris. This low-maintenance approach ensures the deck remains protected without demanding constant intervention.

Cost Efficiency

Preventing costly repairs by mitigating the risks associated with water infiltration, wood rot, and structural damage. Long-term savings are realized as the need for frequent, expensive maintenance diminishes, preserving the deck's integrity.

our DECK WATERPROOFING Process

01

Consultation & Design

We begin with a discovery call to discuss your wish list and engage in a collaborative brainstorming session. After this call, we will arrange a site visit if required.

02

Measurements & Wishlist Requirements

Our designer inputs the measurements and develops two potential layouts that meet your budget and wishlist expectations. You choose the elements you like, and our designer finalizes the design concept based on your preferences.

03

Execution

Our designer and builder present the final design and discuss available options. Once you approve the design, the project is booked. The designer will continue to assist the builder in planning and executing your project.

04

Final Inspection & Cleanup

Upon completion, we conduct a thorough inspection to ensure everything is up to standard. We also ensure the work area is clean and tidy, leaving you ready to enjoy your new outdoor oasis.

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WE'LL CREATE AN INVITING OUTDOORS FOR YOU

YOUR DREAM DECK IS JUST A CALL AWAY.

Our Suppliers & Materials

At Mississauga Decks & Trim, we take great pride in the high-quality materials we use and the trusted suppliers we partner with. We believe that the longevity and aesthetics of our decks and outdoor structures are largely dependent on the quality of materials used. This is why we have painstakingly sourced our materials from the following reputable suppliers known for their commitment to excellence, durability, and sustainability.

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A fiberon logo that says deck it right the first time
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FAQs

  • How often should deck waterproofing be reapplied?

    Deck waterproofing should generally be reapplied every 3 to 5 years, depending on factors such as climate, deck usage, and the specific waterproofing materials used. For instance, areas with heavy rainfall or extreme weather conditions might necessitate more frequent applications to maintain optimal protection. Regular maintenance inspections can help to identify signs of wear and tear early, enabling timely reapplication before significant damage occurs.


    Even with high-quality materials like EPDM Membrane, monitoring the deck's condition is crucial. If you notice any leaks, pooling water, or wood discoloration, it may be indicative of compromised waterproofing. Addressing these issues promptly helps in preserving the deck’s integrity and extending its lifespan, ensuring that your outdoor space remains both functional and aesthetically pleasing.

  • What is the typical cost of deck waterproofing?

    The cost of deck waterproofing varies based on factors such as the size of the deck, the waterproofing method selected, and the condition of the existing deck. On average, the price range can be between $5 to $15 per square foot, with custom solutions potentially costing more due to specialized materials or additional labor. An initial consultation can provide a more accurate estimate tailored to your specific needs.


    Additional costs may arise if the deck requires repairs before waterproofing or if optional upgrades, such as custom finishes or enhanced drainage systems, are selected. Investing in high-quality waterproofing solutions can offer long-term savings by preventing costly repairs and extending the deck's lifespan, thereby enhancing the value and usability of your outdoor living space.

  • Can waterproofing be done on an existing deck?

    Yes, waterproofing can be applied to an existing deck. Before beginning the waterproofing process, the deck must undergo a thorough inspection to identify any existing damage, such as wood rot or structural issues, which need to be addressed prior to waterproofing. Necessary repairs should be conducted to ensure that the waterproofing application is effective and long-lasting.


    Once any required repairs are completed, the selected waterproofing solution can be applied. EPDM Membrane, DrySpace, or Zip-Up UnderDeck options all provide robust waterproofing for existing decks. Proper preparation and professional installation are key to ensuring the waterproofing system adheres correctly and provides the desired protection against water damage.

  • How long does the waterproofing process take?

    The duration of the deck waterproofing process depends on factors such as the size of the deck, the complexity of the design, and the chosen waterproofing solution. On average, the process can take anywhere from a few days to a week. This includes time for surface preparation, addressing any necessary repairs, and applying the waterproofing materials.


    Weather conditions can also impact the timeline. For instance, rain or high humidity may extend the drying time required for certain materials. A professional evaluation will provide a more accurate timeline based on the specific conditions of your deck and the scope of work required, ensuring that the project is completed efficiently and to the highest standards of quality.

  • How accurate are the final builds to the 3D designs?

    The accuracy of final builds compared to the initial 3D designs is remarkably high due to advanced software technologies used in creating these models. Initially, all dimensions are accurately represented in the model, giving you a realistic idea of how space will be utilized. These accurate measurements guide builders during construction ensuring that the finished deck matches the initial design.


    Moreover, our skilled craftsmen follow these precise plans diligently while also applying their expertise in carpentry techniques. They ensure every detail from the design phase is manifested in reality while adhering strictly to quality standards set by building codes and regulations. Therefore, barring any unforeseen site conditions or requested changes during construction; your finished deck should match very closely with its original 3D design.


  • Can I make changes during the 3D design process?

    Changes during the 3D design process are not just possible; they are encouraged! We believe this flexibility is one of the significant advantages of using a 3D design service for your deck project. During this stage, modifications can be made quickly without impacting schedules or budgets drastically.


    The software allows us to adjust dimensions, change materials or colors swiftly enabling you to experiment with different ideas until you're completely satisfied with the plan. Also importantly, seeing these changes virtually eliminates guesswork and provides you with a realistic impression of how the alterations will impact the overall look and functionality of your deck. Therefore, making changes during the 3D design process is an effective way to ensure that the final result matches your vision.


  • How long does it take to create a detailed 3D design?

    The time taken to create a detailed 3D design can vary based on several factors including complexity of the project, number of revisions needed, and workload at any given time. Generally speaking though, once we have all necessary information from you regarding your preferences and requirements; a preliminary 3D model can be produced within one week.


    Following this, we allow ample time for review and modifications, ensuring that you are entirely content with the design before proceeding to construction. This iterative process may take another week or two depending on the number of revisions needed. However, we believe spending adequate time during this phase is crucial as it plays a significant role in ensuring a successful deck project.


  • Can I see different options for materials and colors in the 3D design?

    Absolutely, the 3D design process is an ideal platform to explore different options for materials and colors. The advanced software we use can simulate a variety of decking materials including wood, composites, and PVCs. It also allows us to alter colors and finishes with just a few clicks.


    You get an opportunity to see how different materials will look in your specific deck layout. You can compare various options side-by-side and understand how they affect the overall aesthetics of your deck. This visual comparison often makes it easier to make informed decisions about material selection.


    You can also experiment with color options for your chosen materials. Our software can replicate a wide range of colors allowing you to choose the perfect shade that complements your home's exterior and suits your personal preferences. Seeing these color options in a 3D model also helps you visualize how sunlight and shadows might play on different colors throughout the day. Thus, our 3D design service provides comprehensive material and color exploration ensuring that you are completely satisfied with your choices before moving on to construction.


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Protect Your Investment with our waterproofing services

Protect your investment with our state-of-the-art waterproofing services from Mississauga Decks & Trim. Our solutions, including EPDM Membrane, DrySpace, and Zip-Up UnderDeck, ensure your deck withstands water damage, preventing wood rot, mold, and structural issues. Enhance the durability and visual appeal of your deck while creating a dry, usable space underneath. Secure your deck’s longevity today!