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Item #:
158587170
DOWSIL 758 Silicone Weather Barrier Sealant White 20 oz
Item #:
158587170
IMP 70
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
QTY:
Order now and get it around Wednesday, July 15
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Designed for primerless adhesion to challenging surfaces, our silicone sealant offers unparalleled performance against air and weather barriers.
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What Stands Out
Flexible Sealant
This silicone sealant remains highly flexible, allowing it to adapt to temperature changes and movements in structures, ensuring long-lasting protection against water leaks.
Mold Resistant
The 758 sealant is engineered to resist mold and mildew growth, making it ideal for bathrooms and kitchens where moisture accumulation can be a concern.
Easy Application
Designed for effortless application, the 20 oz tube features precision control, making it simple to seal joints and gaps, even for DIY enthusiasts.
Product Details
| Item Weight | 1.3 lbs (590 grams) |
Who Should Buy?
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Homeowners
Ideal for homeowners looking to seal gaps around windows, doors, and siding to prevent water leaks.
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DIY Enthusiasts
Great for DIY projects requiring a durable, flexible sealant to enhance weatherproofing in various applications.
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Contractors
Perfect for contractors needing a reliable sealant for both interior and exterior sealing jobs in construction.
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High-Temperature Areas
Not suitable for environments exposed to extreme heat, as it may degrade and lose effectiveness.
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Non-Porous Surfaces
Ineffective on non-porous materials like glass or metal where bonding may not occur.
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Heavy Structural Joints
Not recommended for large structural joints needing high strength and load-bearing capabilities.
Product Description
DOWSIL 758 Silicone Weather Barrier Sealant White 20 oz
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is 758 Silicone Weather Barrier Sealant used for?
Answer: The 758 Silicone Weather Barrier Sealant is designed for sealing gaps and joints in various construction materials. Its primary usage includes securing windows, doors, roofs, and other areas exposed to the elements, preventing water infiltration, and enhancing energy efficiency. This product is particularly effective in extreme weather conditions and can be used in both indoor and outdoor applications, making it a versatile choice for home improvement projects. -
Question:
Is 758 Silicone Weather Barrier Sealant paintable?
Answer: No, the 758 Silicone Weather Barrier Sealant is not paintable. Silicone sealants do not adhere well to paint, meaning that any painted surface will not effectively bond with the sealant, leading to potential failures in achieving desired aesthetics. For projects requiring both sealing and painting, it's recommended to use a latex or acrylic-based sealant which can be painted over without issue. -
Question:
How long does 758 Silicone Weather Barrier Sealant take to cure?
Answer: The curing time for 758 Silicone Weather Barrier Sealant typically ranges from 24 to 48 hours, depending on the environmental conditions such as humidity and temperature. During the curing process, the sealant will form a durable and flexible bond that can withstand weather elements. It's advisable to let the sealant cure fully before exposing it to heavy rain or extreme conditions to ensure optimal performance. -
Question:
Can I use 758 Silicone Weather Barrier Sealant on wood surfaces?
Answer: Yes, 758 Silicone Weather Barrier Sealant can be used on wood surfaces. This sealant effectively adheres to wood, sealing gaps and protecting them from moisture damage. It's particularly useful in areas where wooden structures are exposed to harsh weather or moisture, as it prevents rotting and enhances the durability of the materials. Be sure to choose clean, dry surfaces for the best results. -
Question:
Does 758 Silicone Weather Barrier Sealant have any odor?
Answer: 758 Silicone Weather Barrier Sealant has a mild odor during the application stage due to its silicone composition. However, the scent dissipates quickly as it cures and generally does not linger long-term. Users sensitive to odors should ensure that the area is well-ventilated during application. This feature makes it suitable for both indoor and outdoor use, minimizing discomfort while ensuring effective sealing. -
Question:
Is 758 Silicone Weather Barrier Sealant resistant to UV light?
Answer: Yes, the 758 Silicone Weather Barrier Sealant is formulated to resist UV degradation. This property allows it to maintain flexibility and adhesion throughout varying weather conditions without breaking down or becoming brittle when exposed to sunlight. As such, it is ideal for exterior applications where long-lasting protection against the sun’s rays is needed, such as around rooftop edges or outdoor fixtures. -
Question:
Can I use 758 Silicone Weather Barrier Sealant for plumbing applications?
Answer: While 758 Silicone Weather Barrier Sealant provides excellent adhesion and flexibility, it is not recommended for use in plumbing applications involving potable water. Instead, plumbing-specific sealants should be used to ensure safety and compliance with plumbing codes. This sealant is best suited for structural and weatherproofing tasks rather than direct contact with water sources, ensuring long-term performance. -
Question:
Is 758 Silicone Weather Barrier Sealant suitable for high-temperature environments?
Answer: Yes, the 758 Silicone Weather Barrier Sealant is designed to withstand high-temperature environments without losing its integrity. It maintains flexibility and adhesion in temperatures up to a certain threshold, making it suitable for use around heat-generating appliances or areas exposed to significant temperature fluctuations. This feature enhances its applicability in both residential and industrial settings. -
Question:
What surfaces can I apply 758 Silicone Weather Barrier Sealant to?
Answer: 758 Silicone Weather Barrier Sealant is versatile and can bond effectively to a variety of surfaces, including glass, metal, concrete, and plastic. This makes it a go-to choice for a range of sealing applications in construction and maintenance projects. When selecting surfaces, ensure they are clean and free from dust or debris for the best adhesion and sealing results. -
Question:
Where can I buy 758 Silicone Weather Barrier Sealant White 20 oz in Isle of Man?
Answer: You can buy 758 Silicone Weather Barrier Sealant White 20 oz from Ubuy in Isle of Man. Ubuy offers a wide selection of sealants, including this high-performance product, making it a convenient choice for both professional contractors and DIY enthusiasts looking for reliable solutions to weatherproof their projects.
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MT
Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
SJ
Shawati
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“Accurate delivery timing given”
16 June 2026 · via Trustpilot
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Youcef
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“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
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Leila
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“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
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Kwame
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
IMP 70
Order now and get it around Wednesday, July 15
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QTY:
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
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Fastest cross-border delivery
Features & Benefits
- One-part neutral cure silicone elastomeric sealant.
- Ensures primerless adhesion for maximum efficiency.
- Compatible with low surface energy materials.
- Ideal for air and weather barriers, window flashings, and fenestration materials.
- Versatile application on various surfaces: steel, aluminum, and fluorinated materials.
- Enhance durability and performance in challenging environments.