Dow Dowsil 791 Black Silicone Sealant 600ml Trade Box of 20

Dow Dowsil 791 Silicone Sealant BLACK 600ml Eco Foils Box of 20

Trade Box of 20 - Trade Price - Money Saver Deal

Colour: Black

Size: 600ml Eco Foil Box of 20

Sealant applicators Option Dow Dowsil 791 Weatherproofing Low Mod Silicone Sealant – 600ml Foil Pack (Black, Eco-Friendly) for use in a barrel 600ml sealant gun, Dow Dowsil 791 gives excellent un-primed adhesion to both porous and non-porous building substrates, perfect option for pointing frames, brick and block expansion joints.

The Dow Dowsil 791 Weatherproofing Low Mod Silicone Sealant in a 600ml eco-friendly foil pack is the perfect solution for professionals looking for both performance and sustainability. Designed for large-scale weatherproofing and sealing applications, this black-coloured low-modulus silicone sealant offers exceptional flexibility and durability. The innovative foil packaging reduces waste compared to traditional plastic cartridges, making it an eco-conscious choice for environmentally responsible projects.

Formulated to withstand extreme weather conditions, Dowsil 791 Black is highly resistant to UV rays, heavy rain, and temperature fluctuations. Its low-modulus formula accommodates joint movement, preventing cracking or loss of adhesion over time. This makes it ideal for structural joints, cladding, curtain walling, and perimeter sealing around windows and doors. The neutral cure formulation ensures compatibility with sensitive materials, including aluminium, steel, and plastic, without causing corrosion or staining.

The 600ml foil pack provides greater capacity, reducing the need for frequent cartridge changes and saving time on-site. By choosing this eco-friendly packaging, contractors and builders can achieve high-quality, long-lasting seals while minimizing environmental impact. Perfect for both internal and external applications, Dow Dowsil 791 ensures superior performance with a sustainable edge.

Dowsil 791 All Options:

Dowsil 791 BLACK 600ml Singles

Dowsil 791 GREY 600ml Box of 20

Dowsil 791 BLACK 600ml Box of 20

Dowsil 791 - 11 Colours 310ml Cartridge

Dowsil 791 - 11 Colours 310ml Cartridges Box of 12

Main Uses and Benefits of DC 791 600ml:

• For weather sealing of curtain walling.
• Building facades.
• Expansion joints.
• As a frame sealant.
• Pointing to polycarbonate.
• Neutral cure.
• Excellent weathering characteristics.
• Resistant to ozone, UV radiation and temperature extremes.
• Joint movement capability + or - 50%
• 20 to 30 minutes working time.
• Fast cure tack free in 2 hours.
• Application Temperature Range -5 to +40C
• Conforms to ISO 11600-25LM
• Meets ISO specification 9047 class 50%

Eco Friendly:

600ml Foil very little waste product just a tiny bit of foil rather than a plastic carton to dispose of

Questions and Answers:

1. How does the 600ml foil packaging benefit both professionals and the environment?
The Dow Dowsil 791 Weatherproofing Low Mod Silicone Sealant in a 600ml foil pack is designed to reduce environmental impact while improving efficiency on-site. Unlike traditional plastic cartridges, the foil packaging generates less waste, making it more eco-friendly. Additionally, the larger capacity of 600ml means fewer pack changes during application, which saves time and increases productivity for professionals working on large projects. By minimizing plastic waste and offering more sealant per pack, this option supports sustainable building practices without compromising on performance.

2. What are the advantages of using low-modulus silicone in expansion joints and weatherproofing applications?
Low-modulus silicone, like Dowsil 791, offers superior flexibility, allowing it to absorb and accommodate significant joint movement. This is crucial in structural and weatherproofing applications where joints are subjected to expansion, contraction, vibrations, and environmental stress. The sealant's elasticity prevents cracking, tearing, or loss of adhesion, ensuring a long-lasting and durable seal. This feature makes it ideal for perimeter sealing, to door and window frames, curtain walling, and expansion joints, particularly in buildings exposed to harsh weather conditions.

3. Is the Dow Dowsil 791 Silicone Sealant suitable for both porous and non-porous substrates?
Yes, the Dow Dowsil 791 is formulated to adhere effectively to a wide range of porous and non-porous materials. It bonds well to surfaces such as glass, metal, aluminium, concrete, stone, and masonry. For non-porous materials like glass and metal, cleaning with a solvent-based cleaner or isopropyl alcohol is recommended to remove grease and contaminants. For porous surfaces like brick or concrete, additional surface preparation, such as applying a primer, may be necessary to ensure optimal adhesion. Proper surface preparation enhances the sealant's performance and longevity.

4. How does the black colour option enhance project aesthetics?
The black version of Dowsil 791 offers both functional and aesthetic benefits, particularly in architectural and decorative applications. The dark colour provides a sleek, professional finish that blends seamlessly with black or dark-coloured frames, cladding, and structural components. This ensures a clean, polished appearance in visible areas such as window and door perimeters, curtain wall joints, and cladding panels. By choosing a colour-matched sealant, professionals can enhance the overall aesthetic of the project while maintaining the seal’s integrity and durability.

5. What makes Dow Dowsil 791 a suitable choice for high-exposure environments?
Dow Dowsil 791 is designed to endure extreme environmental conditions, making it ideal for high-exposure environments. Its UV-resistant properties prevent degradation and discoloration caused by prolonged sun exposure, while its waterproof formulation protects against heavy rain and moisture infiltration. The sealant can also withstand significant temperature fluctuations without losing flexibility or adhesion. These features make it a reliable choice for outdoor applications such as weatherproofing curtain walls, sealing external joints, and protecting structures from environmental stress. Its long-lasting performance ensures that maintenance requirements are minimized, even in harsh climates.

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