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Flex Seal Liquid is a powerful and flexible solution that blocks air, moisture, and water leakage, making it perfect for any home or yard. It creates a waterproof and airtight barrier that will protect your surfaces from extreme temperatures and the elements. This versatile liquid rubber sealant is non-toxic, UV-resistant, and mildew-resistant.
Item #:
67501030
Flex Seal Liquid, Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine,
Item #:
67501030
XCD 383
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Flex Seal Liquid is a powerful and flexible solution that blocks air, moisture, and water leakage, making it perfect for any home or yard. It creates a waterproof and airtight barrier that will protect your surfaces from extreme temperatures and the elements. This versatile liquid rubber sealant is non-toxic, UV-resistant, and mildew-resistant.
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What Stands Out
Versatile Application
Flex Seal Liquid adheres to various surfaces, including roofs, basements, and RVs, making it ideal for diverse repair jobs while ensuring maximum flexibility and effectiveness in any environment.
Waterproof Protection
The liquid rubber coating provides superior waterproofing qualities, sealing leaks and preventing moisture damage, thus enhancing the lifespan of structures and saving costly repairs.
UV Resistance
Designed to withstand harsh UV rays, Flex Seal Liquid retains its integrity and performance over time, ensuring long-lasting protection and maintenance-free durability for outdoor applications.
Product Details
- 3.8 liters of Flex Seal Liquid Rubber Sealant Coating in Gray
- Thick liquid that dries to a flexible, watertight rubberized coating
- Creates a flexible rubber barrier blocking out air, water, and moisture
- Non-Toxic, Non-flammable, no harmful vapors, UV, chemical, and mildew resistant
- Seals and protects from the elements and extreme temperatures
- Ideal for covering and sealing cracks to prevent unwanted water or air from passing through
| Brand Name | Flex Seal Liquid |
| UPC | 853517006573 |
| Unit Count | 128.0 Fluid Ounces |
| Number of Items | 1 |
| Included Components | Item |
| Item Type Name | Liquid Rubber Sealant Coating in a Can |
| Manufacturer | Swift Response, LLC |
| Model | FSLFSGRYR01 |
| Part Number | FSLFSGRYR01 |
| Item Weight | 11.3 Pounds (5.13 kg) |
| Item Dimensions | 7.75 x 6.5 x 6.5 inches (19.7 x 16.5 x 16.5 cm) |
| Water Resistance Level | Waterproof |
| Item Form | Liquid |
| Compatible Material | Rubber |
| Style Name | Liquid Rubber |
| Color | Gray |
| Surface Recommendation | surface_recommendation |
| Material Type | Rubber |
| Material | Rubber |
| Brand | Flex Seal Liquid |
| Style | Liquid Rubber |
| Item dimensions L x W x H | 7.75 x 6.5 x 6.5 inches (19.7 x 16.5 x 16.5 cm) |
Who Should Buy?
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Homeowners
Ideal for homeowners needing a reliable solution for leaking roofs, basements, and other waterproofing tasks.
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DIY Enthusiasts
Great for DIY enthusiasts looking for a versatile product to fix and seal various surfaces around the home.
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Boat Owners
Excellent choice for marine applications, helping boat owners repair leaks and protect surfaces from water damage.
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Professional Contractors
May not satisfy the rigorous demands of professional contractors seeking durable, long-term solutions in heavy-duty applications.
Product Description
Flex Seal Liquid, Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, Gray, 1 Gallon
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Customer Questions & Answers
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Question:
What is Flex Seal Liquid used for?
Answer: Flex Seal Liquid is a versatile liquid rubber coating sealant designed to create a waterproof barrier on various surfaces. It's ideal for roof repairs, sealing leaks in basements, and protecting RVs, campers, and trailers. This flexible and breathable sealant can adhere to different materials like masonry, metal, and EPDM, making it suitable for both indoor and outdoor applications. For instance, homeowners can use it to patch roof leaks, while RV owners can coat exposed pipes to prevent water damage during their travels. -
Question:
How does Flex Seal Liquid work?
Answer: Flex Seal Liquid works by being poured, brushed, or rolled onto surfaces to form a thick, rubberized coating that adheres strongly. Once applied, it cures to create a strong, waterproof layer that is both flexible and UV resistant. This means it can withstand various weather conditions, making it perfect for marine applications or outdoor repairs. For example, using Flex Seal Liquid on a trailer roof will not only prevent leaks but also protect against sun damage, ensuring long-lasting performance. -
Question:
Is Flex Seal Liquid safe for the environment?
Answer: Yes, Flex Seal Liquid is designed with safety in mind. It contains non-toxic ingredients that minimize environmental impact. It is also low in VOCs (volatile organic compounds), making it safer to use in enclosed spaces compared to many traditional sealants. As such, it is an excellent choice for areas near vegetation or water bodies. Users can apply it confidently for home repairs or recreational vehicle maintenance without causing harm to their surroundings. -
Question:
Can Flex Seal Liquid be painted over?
Answer: Absolutely! After Flex Seal Liquid has fully cured, it can be painted over with most oil-based or latex paints. This feature allows homeowners or DIY enthusiasts to match the sealant with existing colors or decor. It’s particularly useful when used on visible areas, such as roofs or outdoor furniture. For the best results, ensure the Flex Seal is completely dried and cured before applying paint to achieve optimal adhesion and finish. -
Question:
How long does it take for Flex Seal Liquid to dry?
Answer: Flex Seal Liquid typically dries to the touch within 2 to 3 hours, but full curing can take up to 24 to 48 hours depending on environmental conditions such as temperature and humidity. It's important to allow adequate time for the product to cure before exposing it to moisture. For example, if you treat a leak in a basement or shower, waiting until it's fully cured ensures that water will not compromise the seal you've created. -
Question:
Can I use Flex Seal Liquid on my boat?
Answer: Yes, Flex Seal Liquid is an excellent choice for marine applications, including boats. It is waterproof and UV resistant, making it ideal for protecting against water damage and sun exposure. Users can apply it to hulls, decks, and other areas prone to leaks or wear. For instance, if you notice dampness around fittings, a layer of Flex Seal Liquid can seal those joints and prevent further issues. -
Question:
Is Flex Seal Liquid suitable for basement repairs?
Answer: Yes, Flex Seal Liquid is specifically formulated to seal and waterproof surfaces, making it highly effective for basement repairs. It can be applied to walls and floors to stop moisture infiltration. When repairing basement leaks, it's critical to ensure the surface is clean and dry before application. Once cured, it forms a durable seal that keeps basements dry, providing an ideal solution for those dealing with dampness or flooding. -
Question:
What surfaces can Flex Seal Liquid be applied to?
Answer: Flex Seal Liquid adheres to a wide range of surfaces, including metals, wood, masonry, rubber, and plastic. This versatility makes it suitable for various applications, from home repairs to automotive and marine projects. For instance, whether you’re sealing metal joints on a roof or protecting wooden decks from moisture damage, Flex Seal Liquid will provide a protective layer that maintains the integrity of the substrate. -
Question:
How do I apply Flex Seal Liquid?
Answer: Applying Flex Seal Liquid is straightforward. Users can pour it directly onto the surface or use a brush, roller, or sprayer for more control. It's essential to start with a clean, dry surface and apply in thin layers to avoid trapping air bubbles. For larger projects like roofing or basements, multiple coats are recommended for maximum effectiveness. This method ensures comprehensive coverage and a strong seal against leaks. -
Question:
Where can I buy Flex Seal Liquid in Saint Lucia?
Answer: You can purchase Flex Seal Liquid from Ubuy in Saint Lucia. Ubuy offers a variety of home improvement products, including Flex Seal, ensuring that you have access to the best options available. Shopping at Ubuy allows you to compare product details and find the right size and color for your needs, all in one convenient place.
Flex Seal Liquid Sealers Editorial Review
**** Flex Seal Liquid has garnered a mix of appreciation and concerns among customers based on their hands-on experience with the product. Many users praise its efficacy, highlighting its effectiveness in sealing leaks and providing a waterproof barrier across various applications—from roofs to basements and even shower walls. Customers have noted the product's thickness, acknowledging that it requires a careful approach—often using a roller instead of a brush, which enhances application smoothness and covers better. However, there have been significant complaints regarding the Consistency of the product's colors, with reports of mismatched shades despite purchasing the same color specification. Additionally, while the product performs well overall, some customers have encountered durability issues, with instances of the sealant cracking or peeling off after less than a year of use. Moreover, a common theme in the reviews is the subpar packaging which has led to several complaints about damaged cans upon arrival. This has detracted from the overall customer satisfaction, as it raises concerns regarding the integrity of the product before even getting to use it. In conclusion, while Flex Seal Liquid is effective for many sealing tasks, potential buyers should be mindful of possible quality control issues with packaging and color matching. When applied correctly, it serves its purpose well, although long-term durability may vary. **
Customer Reviews & Ratings
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Pros
- Highly effective at sealing leaks and providing waterproof barriers
- Works well on various surfaces like roofs, basements, and shower walls
- Applicability improved when using a roller
Cons
- Some reports of cracking and peeling within a year
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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XCD 383
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Features & Benefits
- Flexible rubber barrier that blocks out air, water and moisture
- Protective coating with no harmful effects
- UV, chemical and mildew resistant
- Extreme temperatures and elements proof
- 3.8 liters gray color can
- Non-toxic and non-flammable.
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