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DOWSIL™ 791 Weatherproofing Sealant

Name: DOWSIL™ 791 Weatherproofing Sealant
Brand: Dowsil
Price: 7.49 GBP
Availability: InStock

£7.49

inc VAT

£6.24 ex VAT

Color

Product variants

Uses

echnical Information

Where to Use: Exterior

Paintable: No

Cure Time: 24 hours

Container Type: Cartridge

Shelf Life: 1 year

Available Sizes: 310ml, 380ml cartridges; 600ml sausage

Application Method: Sealant gun and cartridge

Delivery and Shipping

Free delivery for orders over the value of £350.00.

DOWSIL™ 791 Weatherproofing Silicone Sealant

DOWSIL™ 791 is a one-part, low modulus, neutral cure silicone sealant developed for long-lasting weatherproofing in both commercial and domestic applications. It offers excellent unprimed adhesion to a wide range of porous and non-porous surfaces, making it ideal for general glazing, curtain walls, and building façade applications.

Key Benefits

Excellent resistance to ozone, UV radiation, and temperature extremes
High joint movement capability: ±50%
Conforms to ISO 11600-F&G-25LM and ISO 9047 Class 50%
Suitable for general glazing and weather sealing in facades and curtain wall systems
Neutral cure – compatible with sensitive substrates
Long service life and durable flexibility

Suitable Substrates

Glass (standard, toughened, laminated, sealed units)
Wood, MDF, painted and stained timber
PVCu, plastics, polycarbonate
Brick, stone, concrete, masonry
Aluminium (mill finished, anodised, PVF2, powder-coated)
Metals including steel, stainless steel, galvanised steel, copper, brass, zinc, lead

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Description
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Uses
Uses	Advantages • Up to 4 hours fire resistance • Easily applied cartridge application • Sealing joints up to 40mm • Suitable with multiple substrates • Suitable in joints with high movement capability • Durable – Up to 25 years service	Arbomeric MP20 is recommended for many forms of construction, including structural joints in heavy cladding, structural movement joints in floors and floor joints in heavily-trafficked areas.	Recommended for use in many construction applications including curtain walling, both original and remedial perimeter sealing, structural joints in light cladding, profiled metal roof sheets, joints in flat roof systems and guttering joints. NB: Not recommended for overpainting, use with laminated glass and use against natural stone	-